AR1100-I/MQ_技术文档

AR1100 Resistive USB and RS-232

Touch Screen Controller

Data Sheet

 2011 Microchip Technology Inc.

DS41606B

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ISBN: 978-1-61341-833-8

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DS41606B-page 2

 2011 Microchip Technology Inc.

AR1100 RESISTIVE USB AND RS-232

TOUCH SCREEN CONTROLLER

AR1100 Resistive USB and RS-232 Touch Screen Controller

Special Features:

Touch Sensor Support:

• RoHS Compliant

• 4-wire, 5-wire and 8-wire Analog Resistive

• Lead-to-Lead Resistance: 50-2000 Ohm

• Layer-to-Layer Capacitance: 0-0.5 uF

• Power-saving Sleep mode

• Industrial Temperature Range

• Built-in Drift Compensation Algorithm

• 96 Bytes of User EEPROM

Touch Resolution:

• 10-bit Resolution (maximum)

Power Requirements:

• Operating Voltage: 3.3-5.0V +/- 5%

• Standby Current:

Touch Coordinate Report Rate:

- <10 uA (UART)

- <325 uA (USB)

• 150 Reports Per Second (typ.) (see Note below)

• Operating Current:

- <17 mA (no touch)

- <25 mA (touch) (see Note below)

Note:

Actual report rate is dynamically/automat-

ically maximized according to the electri-

cal characteristics of the sensor in use.

Note:

Results vary slightly with sensor.

Communication:

• Automatic Detection/Selection

• UART, 9600 BAUD

• USB V2.0 Compliant, Full Speed

- HID-GENERIC

Touch Modes:

• Off, Stream, Down and Up

- HID-MOUSE

- HID-DIGITIZER

Package Types

The device will be offered in the following packages:

• 20-Lead QFN (5 x 5 mm)

• 20-Lead SOIC

• 20-Lead SSOP

 2011 Microchip Technology Inc.

DS41606B-page 3

AR1100 RESISTIVE USB AND RS-232 TOUCH SCREEN CONTROLLER

Table of Contents

1.0 Device Overview .......................................................................................................................................................................... 5

2.0 Implementation – Quick Start....................................................................................................................................................... 7

3.0 Hardware...................................................................................................................................................................................... 9

4.0 Communication) ......................................................................................................................................................................... 13

5.0 Commands................................................................................................................................................................................. 21

6.0 Configuration Registers.............................................................................................................................................................. 25

7.0 Operation.................................................................................................................................................................................... 29

8.0 Boot Loader................................................................................................................................................................................ 33

9.0 EEPROM Map............................................................................................................................................................................ 37

10.0 Electrical Specifications.............................................................................................................................................................. 39

11.0 Packaging Information................................................................................................................................................................ 41

Appendix A: Revision History............................................................................................................................................................... 51

Appendix B: Device Differences........................................................................................................................................................... 51

Index .................................................................................................................................................................................................... 53

The Microchip Web Site....................................................................................................................................................................... 55

Customer Change Notification Service ................................................................................................................................................ 55

Customer Support................................................................................................................................................................................ 55

Reader Response ................................................................................................................................................................................ 55

Product Identification System............................................................................................................................................................... 57

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DS41606B-page 4

 2011 Microchip Technology Inc.

AR1100 RESISTIVE USB AND RS-232 TOUCH SCREEN CONTROLLER

Resistive touch provides the advantages of easy

integration, low total system cost and acceptance of

1.0

OVERVIEW

The Microchip mTouch^TMAR1100 Analog Resistive

USB and RS-232 Touch Screen Controller represents

a feature-rich, fully-integrated universal touch screen

controller solution. The AR1100 automatically selects

between USB and RS-232 communication protocols,

as well as supports 4, 5 or 8-wire analog resistive touch

screens from any of a variety of touch screen

manufacturers. The AR1100 dynamically adapts to the

various touch screen electrical characteristics such as

sensitivity, contact resistance, and capacitance to

provide optimal performance with minimal design time.

finger, glove or stylus input, and USB communication is

the industry standard for attaching peripherals to a

computer. The AR1100 is an easy-to-integrate touch

screen controller that meets all of these needs in a

single-chip solution or production ready-board product.

The device comes with free drivers for most major

operating systems, making it easy for designers to

quickly create low-risk touch interface solutions.

1.1

Applications

The AR1100 is suitable for any application that requires

fast, accurate and reliable integration of touch –

including, but not limited to:

Building on the AR1000 series, the new AR1100 offers

customers an easy-to-integrate solution for low-cost,

high-performing resistive touch with the advantages of

USB plug and play, support for USB mouse or digitizer,

advanced touch response and accuracy, field flash

updatability, and free drivers for most operating sys-

tems to enable low risk designs for a wide variety of

touch sensing requirements.

• Mobile communication devices

• Personal Digital Assistants (PDA)

• Global Positioning Systems (GPS)

• Touch Screen Monitors

• KIOSK

• Media Players

• Portable Instruments

• Point of Sale Terminals

The AR1100 supports large displays like industrial con-

trols, self-service kiosks, and POS terminals, as well as

smaller tablet displays, handheld consumer devices,

and medical devices.

FIGURE 1-1:

BLOCK DIAGRAM

 2011 Microchip Technology Inc.

DS41606B-page 5

AR1100 RESISTIVE USB AND RS-232 TOUCH SCREEN CONTROLLER

NOTES:

DS41606B-page 6

 2011 Microchip Technology Inc.

AR1100 RESISTIVE USB AND RS-232 TOUCH SCREEN CONTROLLER

2.0

IMPLEMENTATION – QUICK

START

The AR1100 is designed to be a fully-functioning touch

controller on power-up – no configuration is necessary

and only minimal hardware support is needed to create

a

universal controller board (refer to simplified

schematic).

The hard-coded defaults for the operational

parameters are suitable for all but the most unique

circumstances. A jumper on the MODE pin easily

selects the sensor type (5-Wire or 4/8-Wire) and the

Communication mode (USB or UART) is automatically

detected and selected by the device. If USB is

detected, the AR1100 automatically defaults to a

HID-MOUSE, compatible with intrinsic drivers of

standard operating systems. Any desired modifications

to either the operating parameters or USB device type

can be easily saved to internal nonvolatile memory to

override the defaults.

 2011 Microchip Technology Inc.

DS41606B-page 7

AR1100 RESISTIVE USB AND RS-232 TOUCH SCREEN CONTROLLER

NOTES:

DS41606B-page 8

 2011 Microchip Technology Inc.

AR1100 RESISTIVE USB AND RS-232 TOUCH SCREEN CONTROLLER

3.0

3.1

HARDWARE

Pin Assignments

TABLE 3-1:

PIN ASSIGNMENTS

Function

Description/Comments

SSOP, SOIC

QFN

1

2

3

4

18

19

20

1

VDD

Power

OSC1

OSC2

MODE

Oscillator

GND: 5-Wire

Open: 4-/8-Wire

5

6

2

3

LED

(Y+)

Led control

Sensor connection

4W: n/a

5W: n/a

8W: Y+

7

8

4

5

X+

SY-

Sensor connection

UART Transmit Data

Wake pin

9

6

SX+

10

11

12

13

7

UART-TX

WAKE

UART-RX

SX-

8

9

UART Receive Data

10

Sensor connection

4W: n/a

5W: WSX-

8W: SX-

14

15

11

12

X-

Sensor connection

Y+(SY+)

Sensor connection

4W: Y+

5W: Y+

8W: SY+

16

17

18

19

20

13

14

15

16

17

Y-

Sensor connection

USB Internal Voltage Reference

USB data I/O

VUSB

USB-D-

USB-D+

VSS

USB data I/O

GND

 2011 Microchip Technology Inc.

DS41606B-page 9

AR1100 RESISTIVE USB AND RS-232 TOUCH SCREEN CONTROLLER

3.2

Schematic

A simplified schematic is provided below. A detailed

schematic and BOM is given in FIGURE B-1: “Sche-

matic” and FIGURE B-2: “Bill of Materials”.

FIGURE 3-1:

SIMPLIFIED SCHEMATIC

Note:

Unused SENSOR pins should be

grounded.

3.3

Sensor Attachment

AR1100 connections to the various sensor types are

described graphically in Figure 3-2.

FIGURE 3-2:

SENSOR EQUIVALENT CIRCUIT MODELS

DS41606B-page 10

 2011 Microchip Technology Inc.

AR1100 RESISTIVE USB AND RS-232 TOUCH SCREEN CONTROLLER

3.4

ESD Considerations

Suggested ESD protection is shown on the reference

schematic (See FIGURE B-1: “Schematic”).

Additional/alternate ESD countermeasures may be

employed to meet application-specific requirements.

Test to ensure the selected ESD protection does not

degrade touch performance.

Note:

ESD protection diodes are recommended

for all active sensor lines but care should

be taken to minimize capacitance. As an

example,

PESD5V0S1BA

is

recommended and used on reference

designs due to its nominally-low 35 pF.

3.5

Noise Considerations

Touch sensor filtering capacitors are included in the

reference design schematic (See FIGURE B-1:

“Schematic”).

Note:

Changing the value of the sensor filter

capacitors may adversely affect touch

performance.

 2011 Microchip Technology Inc.

DS41606B-page 11

AR1100 RESISTIVE USB AND RS-232 TOUCH SCREEN CONTROLLER

NOTES:

DS41606B-page 12

 2011 Microchip Technology Inc.

AR1100 RESISTIVE USB AND RS-232 TOUCH SCREEN CONTROLLER

4.0

4.1

COMMUNICATION

Physical

The AR1100 supports UART and USB communication

and will automatically detect the active mode between

the two. Additionally, USB mode will enumerate as one

of three ‘devices’. The default USB device type is

defined (and can be changed) by the configuration

command and is saved in nonvolatile memory. The fac-

tory default is HID-MOUSE.

1. UART/Serial

2. HID-GENERIC

3. HID-MOUSE

4. HID-DIGITIZER

4.1.1

MODE DETECT/SELECT

To support auto-detection – the firmware and hardware

resources for UART and USB are both functional at

power-up until the active mode is determined by one of

the following events.

1. USB successfully enumerates – result: USB is

active

2. Valid communication is received via UART –

result: UART is active

3. The Sleep timer has expired and USB has not

yet enumerated – result: UART is active (by

default)

Note:

Immediately after Reset, the AR1100 will

not attempt to ‘Sleep’ for at least 45

seconds to allow time for USB

enumeration – no matter the setting of the

Sleep timer parameter.

Once the active communication mode is determined,

the ‘inactive’ mode is decommissioned to minimize

power. The active communication mode will remain in

force until the AR1100 is reset.

4.1.2

UART MODE

In UART mode, the AR1100 supports a simple, 2-wire

(transmit/receive) asynchronous serial communication.

The device does not support hardware handshaking

but does employ a data protocol handshake described

in the device command section. The host should be

configured for 9600 BAUD, 8 data bits and 1 Stop bit.

 2011 Microchip Technology Inc.

DS41606B-page 13

AR1100 RESISTIVE USB AND RS-232 TOUCH SCREEN CONTROLLER

4.1.3

USB MODE

The USB can enumerate as one of three ‘devices’ (or

device types) identified by a byte in EEPROM. See

Table 4-1.

TABLE 4-1:

NAME

USB IDs

VENDOR PRODUCT

DESC

CLASS

SPEED

ID

HID-GENERIC Proprietary (AR1000-style)

HID

x04D8

x0C01

x0C02

x0C03

FULL

HID-MOUSE

Mouse, absolute coordinates 0-4095

HID-DIGITIZER Single-input digitizer

The HID-MOUSE and HID-DIGITIZER types are

recognized by many host operating systems and will

provide cursor movement with a touch.

The HID-GENERIC type is a proprietary style, which

would require a custom software driver to support.

The controller defaults to the HID-MOUSE device type,

unless it is commanded to enumerate as one of the

other supported types.

Once enumerated, the USB device can be

signaled/commanded to re-enumerate as the same

device or to one of the other two. In processing the

command, the AR1100 writes the desired USB device

type to EEPROM prior to detaching from the bus and

executing a Reset. The SET_FEATUREcontrol transfer

or a WRITE standard data transfer (via the Interrupt

end point) is used to convey the command (described

in Section 5.0, Commands).

Note:

The HID-MOUSE requires SET_FEATURE

and does not support a data WRITE.

4.2

Data Protocol

Data protocol utilizes multi-byte packet transfers in two

categories/formats:

1. Touch reports

2. Command packets

4.2.1

TOUCH REPORTS

Touch reports always originate from the AR1100 and

are transmitted in response to touch detection. The

format of the touch report is mode-dependent.

The measurement resolution for touch coordinates is

10-bit. The measured values are shifted (multiplied by

4) and reported in a 12-bit format. In the reporting

protocol, the Least Significant coordinate bits X1:X0

and Y1:Y0 will be zeros. The resulting full-scale range

for reported touch coordinates is 0 to 4095.

4.2.1.1

Mode: UART, HID-GENERIC

The ‘standard’, 5-byte touch report is formatted as in

Table 4-2:

DS41606B-page 14

 2011 Microchip Technology Inc.

AR1100 RESISTIVE USB AND RS-232 TOUCH SCREEN CONTROLLER

TABLE 4-2:

TOUCH REPORT FORMAT – GENERIC

BIT

BYTE

7

6

5

4

3

2

1

0

1

2

1

0

R

X6

0

R

X5

0

R

P

X4

X3

X2

X9

Y2

Y9

X1

X8

Y1

Y8

X0

X7

Y0

Y7

3

X11

Y4

X10

Y3

4

Y6

0

Y5

0

5

Y11

Y10

P

R

X

Y

Pen state - 1: Pen down - 0: Pen up

(Reserved)

X ordinate of touch location (12 bits)

Y ordinate of touch location (12 bits)

Up to three touch reports are sent in response to each

touch ‘event’ (events are defined as: pen down, pen up

and pen move). A behavior is defined per event by the

‘Touch mode’ configuration parameter and described in

Table 4-3 below.

TABLE 4-3:

TOUCH MODE OPTIONS – GENERIC

SUPPORTED EVENT

MODE

BEHAVIOR

PD

PU

PM

0

1

X

NO REPORT

X

REPORT (P=0)

REPORT (P=1)

2

X

3

X

REPORT (P=1), REPORT (P=0)

4

REPORT (P=0), REPORT (P=1), REPORT (P=0)

REPORT (P=0), REPORT (P=1)

5

X

PD

PU

PM

Report

Pen down

Pen up

Pen move

Touch report

 2011 Microchip Technology Inc.

DS41606B-page 15

AR1100 RESISTIVE USB AND RS-232 TOUCH SCREEN CONTROLLER

4.2.1.2

Mode: HID-MOUSE

Touch report format:

TABLE 4-4:

BYTE

TOUCH REPORT FORMAT – MOUSE

BIT

7

6

5

4

3

2

1

0

1

2

0

X7

0

X6

0

X5

0

X4

0

B3

X2

B2

X1

X9

Y1

Y9

B1

X0

X8

Y0

Y8

X3

3

X11

Y3

X10

Y2

4

Y7

0

Y6

0

Y5

0

Y4

0

5

Y11

Y10

B1

B2

B3

X

Button 1 depressed

Button 2 depressed

Button 3 depressed

X ordinate of touch location (12 bits)

Y

DS41606B-page 16

 2011 Microchip Technology Inc.

AR1100 RESISTIVE USB AND RS-232 TOUCH SCREEN CONTROLLER

4.2.1.3

Mode: HID-DIGITIZER

Touch report format:

TABLE 4-5:

TOUCH REPORT FORMAT – DIGITIZER

BIT

BYTE

7

6

5

4

3

2

1

0

1

2

3

4

5

6

T

P

X

Y

0

P

T

0

X7

X6

0

X5

0

X4

0

X3

X11

Y3

Y11

X2

X10

Y2

Y10

X1

X9

Y1

Y9

X0

X8

Y0

Y8

0

Y7

0

Y6

0

Y5

0

Y4

0

Tip switch

Proximity (in range) – always 1

X ordinate of touch location (12 bits)

For flexibility, the value and behavior of the ‘tip switch’

data entity (“T”) and touch reporting react to and is

defined by the ‘Touch mode’ parameter (similar to ‘pen

state’ bit in HID-GENERIC or UART).

TABLE 4-6:

MODE

TOUCH MODE OPTIONS – DIGITIZER

SUPPORTED EVENT

BEHAVIOR

PD

PU

PM

0

1

X

NO REPORT

X

REPORT (T=0)

REPORT (T=1)

2

X

3

X

REPORT (T=1), REPORT (T=0)

4

REPORT (T=0), REPORT (T=1), REPORT (T=0)

REPORT (T=0), REPORT (T=1)

5

X

PD

PU

PM

Report

Pen down

Pen up

Pen move

Touch report

4.2.2

COMMAND PACKETS

PACKETs are used for all communications, other than

touch reports (i.e., configuration/control). COMMAND

packets (issued by the host) and RESPONSE packets

(issued by the device) have identical framework but dif-

fer slightly in format, as described below. In standard

operation, communication is initiated by the host then

acknowledged by the device. In some diagnostic sce-

narios (not discussed here) – a COMMAND packet

does not necessarily dictate a response from the

device and, in other cases, a RESPONSE packet may

be issued by the device unsolicited.

 2011 Microchip Technology Inc.

DS41606B-page 17

AR1100 RESISTIVE USB AND RS-232 TOUCH SCREEN CONTROLLER

4.2.2.1

Construction

GENERAL

The generic framework for all packets (Figure 4-1) is

comprised of a SYNC byte, a SIZE byte and a DATA

section. The DATA section has a maximum size of 255

total bytes.

FIGURE 4-1:

PACKET FORMAT –

GENERAL

SYNC

0x55

SIZE

N

DATA

D[1]

D[N]

COMMAND

A COMMAND packet has a minimum of 3 bytes

defined as SYNC, SIZE and CMND. The DATA section

is command-dependant and can include up to 254

associated data bytes (D[1] – D[N]). See Figure 4-2.

FIGURE 4-2:

PACKET FORMAT – COMMAND

SYNC

0x55

SIZE

N+1

DATA

D[1]

D[N]

CMND

RESPONSE

A RESPONSE packet has a minimum of 4 bytes

defined as SYNC, SIZE, STATUS and CMND. As with

the COMMAND packet, the RESPONSE packet is

command-dependant and can include up to 253 asso-

ciated data bytes. In cases where the RESPONSE

packet is in direct response to a COMMAND packet,

the CMND byte is the same in both.

FIGURE 4-3:

PACKET FORMAT – RESPONSE

SYNC

0x55

SIZE

N+2

DATA

D[1]

D[N]

STATUS

CMND

4.2.2.2

Mode: UART

4.2.2.3

Mode: USB

In UART communication mode a complete COMMAND

packet must be delivered before the packet ‘time-out’

timer expires (~250 ms). A packet ‘time out’ will cause

any partial packet to be discarded and the packet pars-

ing state controller to reset. Using this mechanism, the

host can always ensure (re-establish) ‘SYNC’ by paus-

ing for 250+ ms before sending another packet.

Typically, a packet arrives (and is delivered) in a single,

64-byte (max.) USB buffer. Theoretically, a COMMAND

packet can span multiple, physical USB buffers but will

be subject to the packet time-out criteria described in

the UART section. A RESPONSE packet will always be

delivered in a single buffer and a buffer will never

contain more than one.

DS41606B-page 18

 2011 Microchip Technology Inc.

AR1100 RESISTIVE USB AND RS-232 TOUCH SCREEN CONTROLLER

4.2.2.4

Mode Capabilities

Only two of the four AR1100 communication modes,

UART and HID-GENERIC, support ‘low-level’

operations such as:

1. Configuration

2. Calibration

3. Boot loading (field re-programming)

The

remaining

two

communication

modes,

HID-MOUSE and HID-DIGITIZER, only support output

of TOUCH REPORT(s) and only receive (respond to)

mode change command(s). They can be supported by

intrinsic operating system driver(s). To configure, cali-

brate and/or reprogram these two devices, the host

must cause them to re-enumerate as HID-GENERIC.

Once the low-level operations are complete, the host

can then re-configure back to the desired device.

 2011 Microchip Technology Inc.

DS41606B-page 19

AR1100 RESISTIVE USB AND RS-232 TOUCH SCREEN CONTROLLER

NOTES:

DS41606B-page 20

 2011 Microchip Technology Inc.

AR1100 RESISTIVE USB AND RS-232 TOUCH SCREEN CONTROLLER

COMMANDS

5.0

In normal operation, the AR1100 automatically returns

‘touch reports’ in response to a touch – no ‘prompting’

is required from the host. The following command set

can be used to configure the parameters used to

‘fine-tune’ the operation. To prevent touch reports from

interfering with these commands, it is recommended

that TOUCH_DISABLE be executed prior to any other

command(s) and the TOUCH_ENABLE command be

used as the last step to return the AR1100 to normal

operation.

5.1

Summary

Table 5-1 summarizes the standard command set.

TABLE 5-1: COMMAND SUMMARY

CMND NAME

DESCRIPTION

Enable TOUCH reporting

0x12

0x13

0x14

0x20

0x21

0x28

0x29

0x2B

0x23

TOUCH_ENABLE

TOUCH_DISABLE

CALIBRATE

Disable TOUCH reporting

Execute Calibrate routine

Read register(s)

REG_READ

REG_WRITE

Write register(s)

EE_READ

Read EE location(s)

EE_WRITE

Write EE location(s)

EE_READ_PARAMS

EE_WRITE_PARAMS

Read parameter set (from EE to RAM)

Write parameter set (from RAM to EE)

Table 5-2 summarizes the STATUS byte in the

RESPONSE packet.

TABLE 5-2:

STATUS

STATUS SUMMARY

NAME

DESCRIPTION

0x00

0x01

0x04

0x05

0xFC

OK

No error

UNRECOGNIZED

TIMEOUT

Unrecognized command

Packet time out

EEPARAMS_ERR

CAL_CANCEL

Error reading EEPROM parameters

Calibration sequence cancelled

 2011 Microchip Technology Inc.

DS41606B-page 21

AR1100 RESISTIVE USB AND RS-232 TOUCH SCREEN CONTROLLER

5.2

Command: TOUCH_ENABLE

5.4

Command: CALIBRATE

Enable touch reporting.

COMMAND PACKET:

The

CALIBRATE

command

initiates

the

controller-based calibration sequence. A RESPONSE

packet is returned for each calibration point touched.

TABLE 5-3:

BYTE#

COMMAND: TOUCH_ENABLE

COMMAND PACKET

VALUE

DESCRIPTION

TABLE 5-7:

COMMAND: CALIBRATE

DESCRIPTION

1

2

3

0x55

0x01

0x12

SYNC

SIZE

BYTE# VALUE

1

2

3

4

0x55

0x02

0x14

SYNC

COMMAND

BYTE COUNT

COMMAND

RESPONSE PACKET:

TABLE 5-4:

BYTE#

RESPONSE: TOUCH_ENABLE

VALUE DESCRIPTION

TYPE 0x01: 4-Point – Full interpola-

tion

0x02: 9-Point

0x03: 25-Point

0x04: 4-Point (AR1000 style)

1

2

3

4

0x55

0x02

SYNC

SIZE

STATUS STATUS

0x12 COMMAND

RESPONSE PACKET (for each calibration point

touched, then released):

TABLE 5-8:

BYTE#

RESPONSE: CALIBRATE

VALUE DESCRIPTION

5.3

Command: TOUCH_DISABLE

Disable touch reporting.

COMMAND PACKET:

1

2

3

4

0x55

0x02

SYNC

SIZE

TABLE 5-5:

BYTE#

COMMAND: TOUCH_DISABLE

STATUS STATUS

0x14 COMMAND

VALUE

DESCRIPTION

1

2

3

0x55

0x01

0x13

SYNC

SIZE

5.5

Command: REG_READ

COMMAND

Read one or more operational registers.

COMMAND PACKET:

RESPONSE PACKET:

TABLE 5-6:

BYTE#

RESPONSE: TOUCH_DISABLE

VALUE DESCRIPTION

TABLE 5-9:

COMMAND: REG_READ

BYTE# VALUE

DESCRIPTION

1

2

3

4

0x55

0x02

SYNC

SIZE

1

2

3

4

5

6

0x55

0x04

0x20

0x00

ADR

N

SYNC

SIZE

STATUS STATUS

0x13 COMMAND

COMMAND

REGISTER ADDRESS (MSB)

REGISTER ADDRESS (LSB)

NUMBER OF BYTES TO READ

RESPONSE PACKET:

TABLE 5-10: RESPONSE: REG-READ

BYTE#

VALUE

DESCRIPTION

SYNC

1

2

0x55

N+2

SIZE

3

STATUS

0x20

STATUS

4

COMMAND

5

REG[ADR]

...

REGISTER VALUE

REGISTER VALUE(S)

...

4+N REG[ADR+N-1] REGISTER VALUE

DS41606B-page 22

 2011 Microchip Technology Inc.

AR1100 RESISTIVE USB AND RS-232 TOUCH SCREEN CONTROLLER

RESPONSE PACKET:

5.6

Command: REG_WRITE

TABLE 5-14: RESPONSE: EE_READ

Write one or more operational registers.

COMMAND PACKET:

BYTE#

VALUE

DESCRIPTION

SYNC

1

2

0x55

N+2

TABLE 5-11: COMMAND: REG_WRITE

SIZE (N = # of BYTES to

WRITE)

BYTE#

VALUE

DESCRIPTION

SYNC

1

2

0x55

N+2

3

4

STATUS

0x28

STATUS

SIZE (N = # of REGS to

WRITE)

COMMAND

5

EE[ADR]

...

EE VALUE

3

4

0x21

0x00

COMMAND

...

EE VALUE VALUE(S)

REGISTER ADDRESS

(MSB)

4+N

EE[ADR+N-1] EE VALUE

5

ADR

REGISTER ADDRESS

(LSB)

5.8

Command: EE_WRITE

6

REG[ADR]

...

REGISTER VALUE

REGISTER VALUE(S)

REGISTER VALUE

Write one or more bytes to EEPROM.

COMMAND PACKET:

...

5+N REG[ADR+N-1]

RESPONSE PACKET:

TABLE 5-15: COMMAND: EE_WRITE

BYTE#

VALUE

DESCRIPTION

SYNC

TABLE 5-12: RESPONSE: REG_WRITE

1

2

0x55

4+N

BYTE#

VALUE

DESCRIPTION

SYNC

SIZE (N = # of REGS to

WRITE)

1

2

3

4

0x55

0x02

3

4

0x29

0x00

COMMAND

SIZE

EE ADDRESS (MSB)

EE ADDRESS (LSB)

EE VALUE

STATUS

0x21

STATUS

COMMAND

5

ADR

6

EE[ADR]

...

EE VALUE(S)

5.7

Command: EE_READ

5+N

EE[ADR+N-1] EE VALUE

Read one or more bytes from EEPROM.

COMMAND PACKET:

RESPONSE PACKET:

TABLE 5-16: RESPONSE: EE_WRITE

TABLE 5-13: COMMAND: EE_READ

BYTE#

VALUE

DESCRIPTION

BYTE#

VALUE

DESCRIPTION

SYNC

1

2

3

4

0x55

2

SYNC

SIZE

1

2

3

4

5

6

0x55

0x04

0x28

0x00

ADR

N

SIZE

STATUS STATUS

0x29 COMMAND

COMMAND

EE ADDRESS (MSB)

EE ADDRESS (LSB)

Number of bytes to read

 2011 Microchip Technology Inc.

DS41606B-page 23

AR1100 RESISTIVE USB AND RS-232 TOUCH SCREEN CONTROLLER

5.9

Command: EE_READ_PARAMS

5.11 Command: USB_MODE_GENERIC

Read entire set of operational parameters from

EEPROM to RAM.

Set default USB mode (device type) to

“HID-GENERIC”. Mode HID-GENERIC is required for

low-level configuration commands, calibration and boot

load operations. No RESPONSE packet is returned.

COMMAND PACKET:

TABLE 5-17: COMMAND: EE_READ_PARAMS

COMMAND PACKET:

BYTE#

VALUE

DESCRIPTION

TABLE 5-21: COMMAND:

1

2

3

0x55

0x01

0x23

SYNC

SIZE

USB_MODE_GENERIC

BYTE#

VALUE

DESCRIPTION

COMMAND

1

2

3

0x55

0x01

0x70

SYNC

SIZE

RESPONSE PACKET:

TABLE 5-18: RESPONSE:

EE_READ_PARAMS

VALUE DESCRIPTION

COMMAND

RESPONSE PACKET:

None.

BYTE#

1

2

3

4

0x55

2

SYNC

SIZE

5.12 Command: USB_MODE_MOUSE

STATUS STATUS

0x23 COMMAND

Set default USB mode (device type) to ‘HID-MOUSE’.

COMMAND PACKET:

TABLE 5-22: COMMAND: USB_MODE_MOUSE

5.10 Command: EE_WRITE_PARAMS

BYTE#

VALUE

DESCRIPTION

Write entire set of operational parameters to EEPROM

from RAM.

1

2

3

0x55

0x01

0x71

SYNC

SIZE

COMMAND PACKET:

COMMAND

TABLE 5-19: COMMAND:

EE_WRITE_PARAMS

RESPONSE PACKET:

None.

BYTE#

VALUE

DESCRIPTION

1

2

3

0x55

0x01

0x2B

SYNC

SIZE

5.13 Command: USB_MODE_DIGITIZER

Set default USB mode (device type) to ‘HID-DIGI-

TIZER’.

COMMAND

RESPONSE PACKET:

TABLE 5-20: RESPONSE:

EE_WRITE_PARAMS

VALUE DESCRIPTION

COMMAND PACKET:

TABLE 5-23: COMMAND:

USB_MODE_DIGITIZER

BYTE#

VALUE

DESCRIPTION

1

2

3

4

0x55

2

SYNC

SIZE

1

2

3

0x55

0x01

0x72

SYNC

SIZE

STATUS STATUS

0x2B COMMAND

COMMAND

RESPONSE PACKET:

None.

DS41606B-page 24

 2011 Microchip Technology Inc.

AR1100 RESISTIVE USB AND RS-232 TOUCH SCREEN CONTROLLER

CONFIGURATION REGISTERS

6.0

TABLE 6-1:

ADDR

CONFIGURATION REGISTER SUMMARY

NAME DECRIPTION

7

6

5

4

3

2

1

0

DFLT

0x00 RisetimeCapTime- *170 usec

out

Value of: 0-255

0x18

0x01 RisetimeQuick

0x02 TouchThreshold

*10 usec

Value of: 0-255

0x02

0x80

8-bit ADC –

touch_check()

0x03 SensitivityFilter

0x04 SamplingFast

8-bit ADC

Value of: 0-255

0x04

# of ADC samples/touch

to average

Value of: 1, 2, 4, 8, 16, 32, 64, 128

Value of: 1-8

0x05 SamplingSlow

# of ADC samples/touch

to average

0x08

0x03

0x00

0x06 AccuracyFilterFast # of touch positions to

average

0x07 AccuracyFilter-

Slow

# of touch positions to

average

Value of: 1-8

0x08 SpeedThreshold

8-bit ADC (raw touch

coordinates)

Value of: 0-255

0x09 DitherFilter

size of anti-dithering win-

dow 1/4096 of sensor

dim.

Value of: 0-255

0x0A SleepDelay

0x0B PenUpDelay

0x0C TouchMode

0x0D TouchOptions

0x0E CalibrationInset

*250 msec

Value of: 0-255

0x00

0x02

touch process loop count

(Note 3)

PD2 PD1 PD0 PM1 PM0 PU2 PU1 PU0 0xB1

(Note 1)

TEN VCF

—

C

DRT

—

48W CALE 0x89

0x40

2x % sensor dimension -

units: 1/256 (e.g.

64=25%)

Value of: 1-128

0x0F PenStateReport-

Delay

*170 usec

Value of: 0-255

0x04

0x10 Reserved

—

0x00

0x80

0x11 TouchReportDelay *0.5 msec

Value of: 0-255

0x12 RisetimeDefault

0x13 RisetimeModifier

*21 usec

(value-128) * 10 usec

(i.e., 128 = 0, 127 = -1,

129 = +10)

0x14 Status

0x15 Debug

(Note 2)

TCH EEV CALV JMP DRT 8W 5W

K

4W 0x00

0x00

(Note 4)

—

RT RTC RTR

—

Note 1: OPTIONS/FLAGS: TEN (Touch Enable); VCF (Verbose Cal Feedback); DRT (Dynamic Risetime Enable);

48W (0 = 4-Wire, 1 = 8-Wire); CALE (Calibration Enable);

2: STATUS (READ ONLY): TCHK (Result of Touch CHK DIAG); EEV (Params in EEPROM used); CALV

(Calibration valid); JMP (State of mode Jumper); DRT (DYN RISE TIME CAP MEAS’D); 8W (Configured

for 8W Sensor); 5W (Configured for 5W Sensor); 4W (Configured for 4W Sensor);

3: TOUCH MODE(S) (specified for each event: PD, PM and PU): 0: no report(s) issued; 1: report (P = 0); 2:

report (P = 1); 3: report (P = 1), report (P = 0); 4: report (P = 0), report (P = 1); report (P = 0), 5: report (P

= 0), report (P = 1);

4: DEBUG FLAGS (optional): RT (Risetime Report); RTC (Risetime CAP Report); RTR (Risetime RES

Report).

 2011 Microchip Technology Inc.

DS41606B-page 25

AR1100 RESISTIVE USB AND RS-232 TOUCH SCREEN CONTROLLER

6.1

Register 0: RisetimeCapTimeout

6.8

Register 7: AccuracyFilterSlow

(ADVANCED – DO NOT CHANGE)

The AccuracyFilterFast sets the level of touch

measurement accuracy enhancement used when the

touch movement is determined to be ‘slow’ (reference

SpeedThreshold). A lower value will increase touch

position resolution but may exhibit more noise in

reported touch positions. A higher value will decrease

touch position resolution but increase immunity to

noise in reported touch positions.

The RisetimeCapTimeout value is used in the

proprietary algorithm associated with sensor

characteristics.

6.2

Register 1: RisetimeQuick

(ADVANCED – DO NOT CHANGE)

The RisetimeQuick value is used in the proprietary

algorithm associated with sensor characteristics.

6.9

Register 8: SpeedThreshold

The SpeedThreshold value sets the threshold for touch

movement to be considered as ‘slow’ or ‘fast’. A lower

value reduces the touch movement speed that will be

considered ‘fast’. A higher value has the opposite

effect.

6.3

Register 2: TouchThreshold

The TouchThreshold value sets the threshold for

detecting a touch condition. A larger value relaxes the

criteria for detecting a touch and a small value is more

demanding.

6.10 Register 9: DitherFilter

6.4

Register 3: SensitivityFilter

The DitherFilter value sets the threshold to prevent the

reported touch location from changing during what is

thought to be a stationary touch. The computed touch

position must change by an amount greater than Dith-

erFilter (either X or Y) before the reported position

changes.

The SensitivityFilter value sets a criteria for touch

‘stability’. A larger value is more sensitive to a touch but

possibly less ‘stable’. A smaller value requires a

‘harder’ touch but provides a more stable position.

6.5

Register 4: SamplingFast

6.11 Register 10: SleepDelay

The SamplingFast register sets the level of touch

measurement sample averaging, when touch

movement is determined to be fast (reference

SpeedThreshold). A lower value will result in faster

reporting but may be more susceptible to noise in touch

positions. A higher value will reduce the report rate but

provide more immunity to random noise in the reported

touch positions.

The SleepDelay value sets the time interval (with no

touch or host communication) that will cause the

AR1100 to enter a low-power Sleep mode (UART

Communication mode only).

6.12 Register 11: PenUpDelay

The PenUpDelay sets the time required for a pen-up

event/condition before the controller will send a touch

report with a pen-up status – effectively debouncing

pen up. The delay timer resets if a pen-down condition

is detected before the timer expires. A lower value will

increase the responsiveness of the controller to pen up.

A higher value will decrease the responsiveness.

6.6

Register 5: SamplingSlow

The SamplingFast register sets the level of touch

measurement sample averaging, when touch

movement is determined to be slow (reference

SpeedThreshold). A lower value will result in faster

reporting but may be more susceptible to noise in touch

positions. A higher value will reduce the report rate but

provide more immunity to random noise in the reported

touch positions.

6.7

Register 6: AccuracyFilterFast

The AccuracyFilterFast sets the level of touch

measurement accuracy enhancement used when the

touch movement is determined to be ‘fast’ (reference

SpeedThreshold). A lower value will increase touch

position resolution but may exhibit more noise in

reported touch positions. A higher value will decrease

touch position resolution but increase immunity to

noise in reported touch positions.

DS41606B-page 26

 2011 Microchip Technology Inc.

AR1100 RESISTIVE USB AND RS-232 TOUCH SCREEN CONTROLLER

6.13 Register 12: TouchMode

The TouchMode value defines the action taken by the

controller in response to the three touch events/states

(i.e., (1) pen down, (2) pen movement and (3) pen up).

A code is specified for each event to specify one of 6

predefined actions. As can be seen in the footnotes of

Table 6-1, several actions specify a sequence of

multiple touch reports. Each report in a multiple-touch

sequence can be spaced in time by parameter

PenStateReportDelay.

TouchMode[7:5] = PD[2:0] Response to event PD (PEN DOWN)

b000

b001

b010

b011

b100

b101

No touch report issued in response to the event

Touch report w/ P=0

Touch report w/ P=1

Touch report w/ P=1, then Touch report w/ P=0

Touch report w/ P=0, then Touch report w/ P=1, then Touch report w/ P=0

Touch report w/ P=0, then Touch report w/ P=1

TouchMode[4:3] = PM[1:0] Response to event PM (PEN MOVEMENT)

b000

b001

b010

No touch report issued in response to the event

Touch report w/ P=0

Touch report w/ P=1

TouchMode[2:0] = PU[2:0] Response to event PU (PEN UP)

b000

b001

b010

b011

b100

b101

No touch report issued in response to the event

Touch report w/ P=0

Touch report w/ P=1

Touch report w/ P=1, then Touch report w/ P=0

Touch report w/ P=0, then Touch report w/ P=1, then Touch report w/ P=0

Touch report w/ P=0, then Touch report w/ P=1

6.14 Register 13: TouchOptions

The TouchOptions register contains several bit flags

corresponding to options in operation.

TouchOptions[7:7] 1: Set TOUCH_ENABLEas the default power-up state

TouchOptions[6:6] 1: Enable verbose mode for calibration feedback

TouchOptions[3:3] 1: Enable proprietary dynamic rise time algorithm

TouchOptions[1:1] 1: Select 8W, 0: Select 4W (if MODE input = VDD)

TouchOptions[0:0] 1: Enable ‘calibrated’ touch reports, 0: Enable ‘raw’ touch reports

 2011 Microchip Technology Inc.

DS41606B-page 27

AR1100 RESISTIVE USB AND RS-232 TOUCH SCREEN CONTROLLER

6.15 Register 14: CalibrationInset

6.17 Register 17: TouchReportDelay

The CalibrationInset value specifies the ‘inset’ (margin)

from the edge of the sensor to the perimeter calibration

points. The remaining calibration points (for 9P and

25P) are evenly spaced between the margins. The

inset is in units of 1/256 of the sensor dimension(s) and

is 2x the margin – e.g. a value of 64 is 64/256ths of the

screen dimension (25%) – each margin (top, bottom,

left, right) is 12.5%.

The TouchReportDelay value sets the time delay

between successive touch reports. This can be used to

reduce the volume/speed of touch reports, thereby

reducing the burden on the host to process the touch

reports.

6.18 Register 18: RisetimeDefault

(ADVANCED – DO NOT CHANGE)

The RisetimeModifier value is used in the proprietary

algorithm measuring and reacting to sensor

characteristic(s).

6.16 Register 15: PenStateReportDelay

The PenStateReportDelay value sets the time delay

between successive touch reports in a multiple-report

sequence called for by TouchModes.

6.19 Register 19: RisetimeModifier

(ADVANCED – DO NOT CHANGE)

The RisetimeModifier value is used in the proprietary

algorithm measuring and reacting to sensor

characteristic(s).

6.20 Register 20: Status

The STATUS register provides useful feedback to the

host on AR1100 operational status.

Status[7:7]

TCHK

Result of touch check diagnostic

Status[6:6]

Status[5:5]

Status[4:4]

Status[3:3]

Status[2:2]

Status[1:1]

Status[0:0]

EEV

CALV

JMP

DRT

8W

Parameters in EEPROM were valid and automatically loaded

Calibration valid (EEPROM contains valid cal coefficients)

State of mode input 1: open (jumper off), 0: grounded (jumper on)

Dynamic risetime CAP successfully measured

Configured for 8W sensor (4W will also be set)

Configured for 5W sensor

5W

4W

Configured for 4W sensor

6.21

Register 21: Debug

The Debug register contains bit flags enabling various

debug functions.

DS41606B-page 28

 2011 Microchip Technology Inc.

AR1100 RESISTIVE USB AND RS-232 TOUCH SCREEN CONTROLLER

AR1100 has the option of either reporting RAW touch

reports or utilizing calibration information to report CAL-

IBRATED touch reports. Configuration register,

“TouchOption”, contains bit flag “CALE” (calibration

7.0

7.1

OPERATION

Configuration

enable) to choose between the two.

The AR1100 is operational out of the box using factory

defaults. Some applications may have special needs

that require changes to those factory settings (parame-

ter registers). This is easily accomplished using the

commands described in Section 5.0, Commands. The

recommended procedure is as follows:

The calibration process requires the operator to

sequentially touch a series of targets [crosshairs] pre-

sented by the host on the display device. The AR1100

archives the raw-touch data from each calibration

touch point in EEPROM, then uses that data in normal

operation to process “raw” data into “calibrated” data.

1. Issue command: TOUCH_DISABLE (disables

touch reports so as not to interfere)

2. Issue command: REG_WRITE, as needed, to

modify the value of selected parameter registers

3. Issue command: EE_WRITE_PARAMS(optional)

to archive new register values as ‘defaults’

4. Issue command: TOUCH_ENABLE(to re-enable

touch reports)

Note:

Calibration is supported only in UART and

HID-GENERIC communication modes.

Refer to Section 7.6, USB Mode Change.

7.2.2

CONFIGURATION

Both the host and device must know/understand the

geometry of the calibration point matrix. The AR1100

defines the matrix by (1) an INSET and (2) calibration

TYPE i.e., number of points (4, 9 or 25). The TYPE is

set by the argument of the calibration command. The

INSET is pre-defined by the Configuration register

CalibrationInset.

Note:

Configuration commands are supported

only in UART and HID-GENERIC

communication

modes.

Refer

to

Section 7.6, USB Mode Change.

The INSET is predefined as ‘64’ – interpreted as 64/

256 (i.e., 25%) of the sensor width or height. This

defines the ‘margin’ on the perimeter of the calibration

point matrix. Interior calibration points are spaced

equally between the margins (e.g., for the 9-point cali-

bration in the illustration – point 2 is half-way between

points 1 and 3). See Figure 7-1.

7.2

7.2.1

Calibration

INTRODUCTION

Calibration enables the AR1100 to issue touch reports

that (1) correct/modify sensor orientation and (2) pre-

cisely map the reported touch location to the physical

dimensions of the underlying display device. The

FIGURE 7-1:

CALIBRATION POINT LAYOUT

 2011 Microchip Technology Inc.

DS41606B-page 29

AR1100 RESISTIVE USB AND RS-232 TOUCH SCREEN CONTROLLER

• host presents 2^ndtarget

7.2.3

EXECUTION

• operator touches (and releases) sensor at 2^nd

target

The host first commands the AR1100 to enter

Calibration mode, then subsequently presents the

calibration point targets, one at a time, from left to right,

top to bottom. The AR1100 returns a calibration

command response packet each time the operator

touches a target – signaling the host to proceed. Upon

completion, the data from the calibration process is

saved to EEPROM and available for use by the

AR1100 during normal operation. Calibration process

can be aborted by the host by simply issuing any

command. That command will be ignored but the

response to that command will have a status byte that

indicates that calibration had terminated prematurely

(see below).

• device issues response packet: <0x55> <0x02>

<0x00> <0x14>

• host issues TOUCH_ENABLEcommand to abort

calibration: <0x55> <0x01> <0x12>

• device issues response packet: <0x55> <0x02>

<0xFC> <0x12>

• (status 0xFC indicates calibration termination)

• host terminates the target display

• device returns to normal operation

7.2.3.1

Normal sequence

7.2.3.3

Normal sequence (verbose)

• host issues calibration command: <0x55>

<0x02> <0x14> <type>

The VCF (Verbose Calibration Feedback) bit in the

TouchOptions Configuration register enables ‘verbose’

communication from the AR1100 in Calibration mode

as evidenced below:

• host present 1^sttarget

• host sets ‘verbose’ flag in Configuration register

i.e., TouchOptions[VCF]

• host issues calibration command: <0x55>

<0x02> <0x14> <type>

• device responds: <0x55> <0x07> <0x00>

<0x14> <0xFE> <0xXX> <0xXX> <0xYY>

<0xYY>

• operator touches (and releases) sensor at 1^st

target

• device issues response packet: <0x55> <0x02>

<0x00> <0x14>

• host presents 2^ndtarget

• operator touches (and releases) sensor at 2^nd

0xFE indicates ‘enter’ Calibration mode, XXand YYare

don’t care.

target

• device issues response packet: <0x55> <0x02>

<0x00> <0x14>

• …

• host presents last target

• operator touches (and releases) sensor at last

target

• host presents 1^sttarget

• operator touches (and releases) sensor at 1^st

target

• device issues response packet: <0x55> <0x07>

<0x00> <0x14> <0x00> <0xXX> <0xXX>

<0xYY> <0xYY>

• device issues response packet: <0x55> <0x02>

<0x00> <0x14>

• the 5^thbyte indicates the calibration point 0x00

(the 1^st)

• host terminates the target display

• device returns to normal operation

0xXXXX and 0xYYYY are RAW coordinates of the

touch point (16-bit, little endian)

7.2.3.2

Aborted sequence

• host presents 2^ndtarget

• host issues calibration command: <0x55>

<0x02> <0x14> <type>

• operator touches (and releases) sensor at 2^nd

target

• device issues response packet: <0x55> <0x07>

<0x00> <0x14> <0x01> <0xXX> <0xXX>

<0xYY> <0xYY>

• host presents 1^sttarget

• operator touches (and releases) sensor at 1^st

target

• The 5^thbyte indicates the calibration point 0x01

• device issues response packet: <0x55> <0x02>

<0x00> <0x14>

(the 2^nd

)

0xXXXX and 0xYYYY are RAW coordinates of the

touch point (16-bit, little endian)

…

DS41606B-page 30

 2011 Microchip Technology Inc.

AR1100 RESISTIVE USB AND RS-232 TOUCH SCREEN CONTROLLER

• host presents last target (9^thin this example)

• operator touches (and releases) sensor at last tar-

get <0x55> <0x07> <0x00> <0x14> <0x08>

<0xXX> <0xXX> <0xYY> <0xYY>

7.5

LED

The LED provides an indication of controller status. As

summarized in Table 7-1, a ‘fast’ blink indicates that a

touch is detected, and a ‘slow’ blink indicates no touch.

• the 5^thbyte indicates the calibration point 0x08

(the 9^th)

FIGURE 7-2:

LED SCHEMATIC

• 0xXXXXand 0xYYYYare RAW coordinates of the

touch point (16-bit, little endian)

• device indicates exit from calibration mode with

<0x55> <0x07> <0x00> <0x14> <0xFF>

<0xXX> <0xXX> <0xYY> <0xYY>

0xFF indicates ‘exit’ Calibration mode, XXand YYare

don’t care

• host terminates the target display

• device returns to normal operation

7.3

Sleep

The AR1100 supports a low-power, Sleep mode used

to conserve power when the device is not in use.

TABLE 7-1:

Behavior

LED INDICATOR

Status

When in UART Communication mode, Sleep mode is

activated after a specified time interval (parameter reg-

ister: SleepDelay) during which no touch or communi-

cation took place. When in Sleep, the device can be

awakened by a touch or by any communication from

the host. The first byte of communication used to wake

up the device will be lost/ignored.

LED blinks slowly

(once per second)

Controller is powered, awake

and no touch is detected

LED blinks rapidly (5 Controller detects a touch

times per second)

LED is off

Controller has no power or is

asleep (suspended)

When in USB Communication mode, Sleep mode is

activated by a USB SUSPEND control transfer from the

host – the SleepDelay timer has no effect. Optionally, if

the host is configured to allow the device to awaken the

host (USB REMOTE WAKE-UP), the host will preface

the USB SUSPEND with a control transfer to enable

remote wake-up from the device. In this situation, a

touch can awaken the host; otherwise, only a RESUME

condition from the host will wake-up the AR1100.

7.6

USB Mode Change

Low-level operations (configuration, calibration, boot

load) are supported in only 2 of the 4 communication

modes (i.e., UART and HID-GENERIC). If the AR1100

is operating in HID-MOUSE or HID-DIGITIZER mode,

it must be configured to HID-GENERIC for the low-level

operations, then reconfigured back to the desired

(default) device type.

7.4

Configure Sensor Type

The AR1100 must be configured for the sensor type

connected (i.e., 4W, 5W or 8W) using a combination of

the MODE input pin and configuration parameter

TouchOptions. For a 5W sensor, the mode input pin

must be grounded. For a 4W or 8W sensor, the mode

input pin should be open/disconnected. Additionally, bit

1 in Configuration register TouchOptions is used to

further select between 4W and 8W.

Three 3-byte commands are provided to assign the

USB device type (refer to Section 5.0, Commands).

1. USB_MODE_GENERIC

2. USB_MODE_MOUSE

3. USB_MODE_DIGITIZER

Each command sets the default USB device type (in

nonvolatile memory), then resets the AR1100 – caus-

ing it to re-enumerate. All three device types will accept

As seen in FIGURE B-1: “Schematic”, the MODE pin

is typically connected to a hardware jumper (J1).

Because this pin is equipped with an internal pull-up

resistor, it can be grounded with a jumper or simply left

disconnected (no jumper).

the mode change commands as either

a

SET_FEATURE control transfer or a standard WRITE

data transfer (via the interrupt-end point). The HID-

MOUSE device under MS Windows^®may be limited to

SET_FEATUREonly.

 2011 Microchip Technology Inc.

DS41606B-page 31

AR1100 RESISTIVE USB AND RS-232 TOUCH SCREEN CONTROLLER

NOTES:

DS41606B-page 32

 2011 Microchip Technology Inc.

AR1100 RESISTIVE USB AND RS-232 TOUCH SCREEN CONTROLLER

BOOT LOADER

8.0

Note:

A stand-alone software utility is available

from Microchip to facilitate the boot

loading operation. This functionality is

also available with the Microchip AR

Configuration Utility.

The boot load process and associated commands

enables the host to reprogram the AR1100. Because

the size of the Flash program memory cannot accom-

modate both a boot load section and application sec-

tion, the AR1100 is programmed in sections using 3

passes. With each pass, a USB device will necessarily

re-enumerate.

Passes:

1. Program temporary boot load application into

upper memory

2. Execute from temporary boot load application to

program the lower half of the new application

Note:

The boot load operation is supported only

in UART and HID-GENERIC

communication modes.

Section 7.6, USB Mode Change.

Refer

to

3. Execute from the lower half of the new applica-

tion to program the upper half

This process is illustrated in a more detail in Figure 8-1

below.

FIGURE 8-1:

BOOT LOADING SEQUENCE

 2011 Microchip Technology Inc.

DS41606B-page 33

AR1100 RESISTIVE USB AND RS-232 TOUCH SCREEN CONTROLLER

8.1

Command Summary

The boot load operation uses the same data format/

protocol as the touch application. Commands are

described below.

TABLE 8-1:

COMMAND SUMMARY

CMND

NAME

DESCRIPTION

0x01

0xF0

0xF1

0xF2

0xF3

0xF4

0xF5

VERSION

RESET

Return version number and mode

Software device Reset

INIT

Initialize boot loader

WRITE

Write-memory contents

Read-memory contents

Flush Flash cache

READ

FLUSH

WRITE_MODE

Write nonvolatile BOOT mode value

STATUS code(s) returned in RESPONSE packet.

TABLE 8-2: COMMAND STATUS SUMMARY

CODE

NAME

DESCRIPTION

0x00

0x01

OK

No error

Packet was malformed, unrecognized or timed out

BAD PACKET

8.2

Command: VERSION

8.3

Command: RESET

Request firmware version packet – includes Boot

mode.

Execute a device Reset. If in USB mode, the device will

detach from the bus and re-enumerate.

COMMAND PACKET:

TABLE 8-3:

BYTE#

COMMAND: VERSION

VALUE DESCRIPTION

TABLE 8-5:

BYTE#

COMMAND: RESET

VALUE DESCRIPTION

1

2

3

0x55

0x01

SYNC

SIZE

1

2

3

0x55

0x01

0xF0

SYNC

SIZE

COMMAND

RESPONSE PACKET:

None.

RESPONSE PACKET:

TABLE 8-4:

RESPONSE: VERSION

VALUE DESCRIPTION

BYTE#

1

2

3

4

6

7

8

0x55

SYNC

SIZE

0x06

STATUS

0x01

STATUS

COMMAND

VER_MAJOR VERSION (Major)

VER_MINOR VERSION (Minor)

VER_REV

VERSION (Revision – inter-

nal)

9

MODE

Boot mode

0: Normal

1: Write boot – upper Flash

2: Write application – lower

3: Write application – upper

DS41606B-page 34

 2011 Microchip Technology Inc.

AR1100 RESISTIVE USB AND RS-232 TOUCH SCREEN CONTROLLER

RESPONSE PACKET:

8.4

Command: INIT

TABLE 8-9:

BYTE#

RESPONSE: WRITE

VALUE DESCRIPTION

Initialize the boot load process – executed as the first

step after Reset.

COMMAND PACKET:

1

2

3

4

0x55

2

SYNC

SIZE

TABLE 8-6:

BYTE#

COMMAND: INIT

VALUE DESCRIPTION

STATUS STATUS

0xF2 COMMAND (WRITE)

1

2

3

0x55

0x01

0xF1

SYNC

SIZE

8.6

Command: READ

COMMAND

Read from device Flash or EEPROM.

REMINDER: Flash data will be encrypted while

EEPROM data will not be encrypted.

RESPONSE PACKET:

TABLE 8-7:

BYTE#

RESPONSE: INIT

VALUE DESCRIPTION

COMMAND PACKET:

TABLE 8-10: COMMAND: READ

1

2

3

4

0x55

2

SYNC

SIZE

BYTE#

VALUE

DESCRIPTION

SYNC

1

2

3

4

5

6

7

0x55

0x05

0xF3

STATUS STATUS

0xF1 COMMAND

SIZE

COMMAND

ADDR 07:00 ADDRESS

ADDR 15:08

8.5

Command: WRITE

The WRITEcommand facilitates programming Flash or

EEPROM. The Most Significant Byte of the 24-bit

address in the WRITE command dictates the destina-

tion. The AR1100 maps Flash to 0x000000 and

EEPROM, to 0xF00000.

ADDR 23:16

N

# Bytes to Read

RESPONSE PACKET:

COMMAND PACKET:

TABLE 8-11: RESPONSE: READ

TABLE 8-8:

BYTE#

COMMAND: WRITE

VALUE DESCRIPTION

BYTE#

VALUE

DESCRIPTION

SYNC

1

2

0x55

N+2

1

2

0x55

N+4

SYNC

SIZE (N = # of data bytes

to read)

SIZE (N = # of data bytes

to write)

3

4

5

6

7

STATUS

0xF3

STATUS

3

0xF2

COMMAND

4

5

ADDR 07:00 ADDRESS

ADDR 15:08

[DATA 1]

...

6

ADDR 23:16

[DATA N]

7

[DATA 1]

...

DATA (to be written)

...

N+6

[DATA N]

 2011 Microchip Technology Inc.

DS41606B-page 35

AR1100 RESISTIVE USB AND RS-232 TOUCH SCREEN CONTROLLER

8.7

Command: FLUSH

8.8

Command: WRITE_MODE

The FLUSH command is required to write/flush any

data remaining in the internal cache at the end of a boot

load session.

The WRITE_MODE command is used to change the

operational mode of the bootloader. The four modes

are described in Table 8-16.

COMMAND PACKET:

TABLE 8-12: COMMAND: FLUSH

TABLE 8-14: COMMAND: WRITE_MODE

BYTE#

VALUE

DESCRIPTION

BYTE#

VALUE

DESCRIPTION

SYNC

1

2

3

0x55

0x01

0xF4

SYNC

SIZE

1

2

3

4

5

6

7

0x55

0x05

0xF5

n/a

SIZE

COMMAND

n/a

RESPONSE PACKET:

TABLE 8-13: RESPONSE: FLUSH

n/a

M

1_Byte mode Code

BYTE#

VALUE

DESCRIPTION

1

2

3

4

0x55

2

SYNC

SIZE

RESPONSE PACKET:

TABLE 8-15: RESPONSE: WRITE_MODE

STATUS STATUS

0xF4 COMMAND

BYTE#

VALUE

DESCRIPTION

1

2

3

4

0x55

2

SYNC

SIZE

STATUS STATUS

0xF5 COMMAND

The boot load “MODE CODE” (referenced above) is a

1-byte value saved in nonvolatile memory to indicate

boot status.

TABLE 8-16: WRITE_MODECODES

Value

Description

0x00 Normal mode (application)

0x01 Programming/Flashing ‘upper’ application

0x02 Programming/Flashing ‘lower’ application

0x03 Programming/Flashing temporary ‘boot’

module

DS41606B-page 36

 2011 Microchip Technology Inc.

AR1100 RESISTIVE USB AND RS-232 TOUCH SCREEN CONTROLLER

EEPROM MAP

9.0

TABLE 9-1:

EEPROM MAP

ADDR(D) ADDR(D)

Value

Description

0

00

...

USER

...

User-defined area

95

5F

60

61

62

63

64

65

66

67

68

69

6A

6B

6C

6D

6E

6F

70

71

72

73

74

75

76

77

...

96

0x55

RisetimeCapTimeout

RisetimeQuick

TouchThreshold

SensitivityFilter

SamplingFast

SamplingSlow

AccuracyFilterFast

AccuracyFilterSlow

SpeedThreshold

DitherFilter

HEADER – PARAMETER BLOCK

97

98

99

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

...

SleepDelay

PenUpDelay

TouchMode

TouchOptions

CalibrationInset

PenStateReportDelay

n/a

TouchReportDelay

RisetimeDefault

RisetimeModifier

Status

Debug

NOT USED

127

128

129

130

131

132

133

134

135

136

137

138

139

140

7F

80

81

82

83

84

85

86

87

88

89

8A

8B

8C

0x55

flags

HEADER – CALIBRATION DATA BLOCK

bit flags

nx

number of calibration point on X axis

number of calibration point on Y axis

inset

ny

inset

type

calibration type

nx_offset[0]

calculated 16-bit calibration point offset – xaxis

nx_offset[1]

nx_offset[2]

nx_offset[3]

calculated 16-bit calibration point offset – xaxis

Note 1: Locations 0xFE, 0xFF are off-limits and should not be overwritten.

 2011 Microchip Technology Inc.

DS41606B-page 37

AR1100 RESISTIVE USB AND RS-232 TOUCH SCREEN CONTROLLER

TABLE 9-1:

EEPROM MAP (CONTINUED)

ADDR(D) ADDR(D)

Value

Description

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

...

8D

8E

8F

90

91

92

93

94

95

96

97

98

99

9A

9B

9C

9D

9E

9F

A0

A1

A2

...

nx_offset[4]

ny_offset[0]

ny_offset[1]

ny_offset[2]

ny_offset[3]

ny_offset[4]

xy [0,0]

calculated 16-bit calibration point offset – xaxis

calculated 16-bit calibration point offset – yaxis

calibration point 0, X ordinate (16 bit)

xy [1,0]

calibration point 0, Y ordinate (16 bit)

xy [0,1]

calibration point 1, X ordinate (16 bit)

xy [1,1]

calibration point 1, Y ordinate (16 bit)

...

calibration point(s)

249

250

251

252

253

254

255

F9

FA

FB

FC

FD

FE

FF

xy [24,1]

calibration point 24, X ordinate (16 bit)

calibration point 24, Y ordinate (16 bit)

usb_mode

boot_mode

USB MODE (GENERIC, MOUSE, DIGITIZER)

BOOT MODE (0 = NORMAL/NON-BOOT)

Note 1: Locations 0xFE, 0xFF are off-limits and should not be overwritten.

DS41606B-page 38

 2011 Microchip Technology Inc.

AR1100 RESISTIVE USB AND RS-232 TOUCH SCREEN CONTROLLER

10.0 ELECTRICAL SPECIFICATIONS

(†)

Absolute Maximum Ratings

Ambient temperature under bias......................................................................................................... -40°C to +85°C

Storage temperature ........................................................................................................................ -65°C to +150°C

Voltage on VDD with respect to VSS .................................................................................................... -0.3V to +6.5V

Voltage on all other pins with respect to VSS ........................................................................... -0.3V to (VDD + 0.3V)

Total power dissipation................................................................................................................................... 800 mW

Maximum current out of VSS pin .................................................................................................................... 300 mA

Maximum current into VDD pin ....................................................................................................................... 250 mA

Input clamp current (VI < 0 or VI > VDD)20 mA

Maximum output current sunk by any I/O pin....................................................................................................25 mA

Maximum output current sourced by any I/O pin .............................................................................................. 25 mA

† NOTICE: Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the

device. This is a stress rating only and functional operation of the device at those or any other conditions above those

indicated in the operation listings of this specification is not implied. Exposure above maximum rating conditions for

extended periods may affect device reliability.

† NOTICE: This device is sensitive to ESD damage and must be handled appropriately. Failure to properly handle

and protect the device in an application may cause partial to complete failure of the device.

 2011 Microchip Technology Inc.

DS41606B-page 39

AR1100 RESISTIVE USB AND RS-232 TOUCH SCREEN CONTROLLER

NOTES:

DS41606B-page 40

 2011 Microchip Technology Inc.

AR1100 RESISTIVE USB AND RS-232 TOUCH SCREEN CONTROLLER

11.0 PACKAGING INFORMATION

11.1 Package Marking Information

20-Lead SSOP (5.30 mm)

Example

AR1100

I/SS

e

3

1042256

20-Lead SOIC (7.50 mm)

Example

XXXXXXXXXXXX

AR1100

I/SO

e

3

1042256

YYWWNNN

20-Lead QFN (5x5x0.9 mm)

Example

PIN 1

AR1100

e

3

I/MQ

1042256

Legend: XX...X Customer-specific information

Y

Year code (last digit of calendar year)

YY

WW

NNN

Year code (last 2 digits of calendar year)

Week code (week of January 1 is week ‘01’)

Alphanumeric traceability code

e

3

Pb-free JEDEC designator for Matte Tin (Sn)

*

This package is Pb-free. The Pb-free JEDEC designator (

can be found on the outer packaging for this package.

)

e3

Note: In the event the full Microchip part number cannot be marked on one line, it will

be carried over to the next line, thus limiting the number of available

characters for customer-specific information.

*

Standard PICmicro^®device marking consists of Microchip part number, year code, week code and

traceability code. For PICmicro device marking beyond this, certain price adders apply. Please check

with your Microchip Sales Office. For QTP devices, any special marking adders are included in QTP

price.

 2011 Microchip Technology Inc.

DS41606B-page 41

AR1100 RESISTIVE USB AND RS-232 TOUCH SCREEN CONTROLLER

11.2 Ordering

TABLE 11-1: ORDERING PART NUMBERS

Part Number

Temperature Range

Package

Packing

AR1100-I/SS

AR1100T-I/SS

AR1100-I/SO

AR1100T-I/SO

AR1100-I/MQ

AR1100T-I/MQ

-40°C to +85°C

SSOP, 20 pins

SOIC, 20 pins

QFN, 20 pins

Tube

T/R

Tube

T/R

Tube

T/R

DS41606B-page 42

 2011 Microchip Technology Inc.

AR1100 RESISTIVE USB AND RS-232 TOUCH SCREEN CONTROLLER

11.3

Package Details

The following sections give the technical details of the packages.

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+ꢁ ꢐꢃ&ꢉꢄ ꢃꢌꢄꢃꢄꢔꢅꢇꢄ"ꢅ%ꢌꢈꢉꢊꢇꢄꢍꢃꢄꢔꢅꢑꢉꢊꢅꢕꢖꢒ*ꢅ,ꢀꢗꢁ-ꢒꢁ

.ꢖ/0 .ꢇ ꢃꢍꢅꢐꢃ&ꢉꢄ ꢃꢌꢄꢁꢅꢘꢎꢉꢌꢊꢉ%ꢃꢍꢇꢈꢈꢋꢅꢉ#ꢇꢍ%ꢅꢆꢇꢈ!ꢉꢅ ꢎꢌ)ꢄꢅ)ꢃ%ꢎꢌ!%ꢅ%ꢌꢈꢉꢊꢇꢄꢍꢉ ꢁ

ꢙ*10 ꢙꢉ$ꢉꢊꢉꢄꢍꢉꢅꢐꢃ&ꢉꢄ ꢃꢌꢄ'ꢅ! !ꢇꢈꢈꢋꢅ)ꢃ%ꢎꢌ!%ꢅ%ꢌꢈꢉꢊꢇꢄꢍꢉ'ꢅ$ꢌꢊꢅꢃꢄ$ꢌꢊ&ꢇ%ꢃꢌꢄꢅꢑ!ꢊꢑꢌ ꢉ ꢅꢌꢄꢈꢋꢁ

ꢒꢃꢍꢊꢌꢍꢎꢃꢑ ꢘꢉꢍꢎꢄꢌꢈꢌꢔꢋ ꢐꢊꢇ)ꢃꢄꢔ /ꢓꢗꢞꢓꢛꢏ.

 2011 Microchip Technology Inc.

DS41606B-page 43

AR1100 RESISTIVE USB AND RS-232 TOUCH SCREEN CONTROLLER

Note: For the most current package drawings, please see the Microchip Packaging Specification located at

http://www.microchip.com/packaging

DS41606B-page 44

 2011 Microchip Technology Inc.

AR1100 RESISTIVE USB AND RS-232 TOUCH SCREEN CONTROLLER

Note: For the most current package drawings, please see the Microchip Packaging Specification located at

http://www.microchip.com/packaging

 2011 Microchip Technology Inc.

DS41606B-page 45

AR1100 RESISTIVE USB AND RS-232 TOUCH SCREEN CONTROLLER

Note: For the most current package drawings, please see the Microchip Packaging Specification located at

http://www.microchip.com/packaging

DS41606B-page 46

 2011 Microchip Technology Inc.

AR1100 RESISTIVE USB AND RS-232 TOUCH SCREEN CONTROLLER

Note: For the most current package drawings, please see the Microchip Packaging Specification located at

http://www.microchip.com/packaging

 2011 Microchip Technology Inc.

DS41606B-page 47

AR1100 RESISTIVE USB AND RS-232 TOUCH SCREEN CONTROLLER

20-Lead Plastic Quad Flat, No Lead Package (MQ) 5x5x0.9 mm Body [QFN]

Note: For the most current package drawings, please see the Microchip Packaging Specification located at

http://www.microchip.com/packaging

Microchip Technology Drawing C04-120A

DS41606B-page 48

 2011 Microchip Technology Inc.

AR1100 RESISTIVE USB AND RS-232 TOUCH SCREEN CONTROLLER

Note: For the most current package drawings, please see the Microchip Packaging Specification located at

http://www.microchip.com/packaging

 2011 Microchip Technology Inc.

DS41606B-page 49

AR1100 RESISTIVE USB AND RS-232 TOUCH SCREEN CONTROLLER

NOTES:

DS41606B-page 50

 2011 Microchip Technology Inc.

AR1100 RESISTIVE USB AND RS-232 TOUCH SCREEN CONTROLLER

APPENDIX A: DATA SHEET

REVISION HISTORY

Revision A (08/2011)

Original release of this data sheet.

Revision B (11/2011)

Updated schematic.

 2011 Microchip Technology Inc.

DS41606B-page 51

AR1100 RESISTIVE USB AND RS-232 TOUCH SCREEN CONTROLLER

APPENDIX B:

FIGURE B-1:

SCHEMATIC

FIGURE B-2:

BILL OF MATERIALS

Note:

ESD protection diodes are recommended for all active sensor lines but care should be taken to minimize

capacitance. As an example, PESD5V0S1BA is recommended and used on reference designs due to its

nominally-low 35 pF.

Unused SENSOR pins should be grounded.

DS41606B-page 52

 2011 Microchip Technology Inc.

AR1100 RESISTIVE USB AND RS-232 TOUCH SCREEN CONTROLLER

INDEX

A

M

Absolute Maximum Ratings ................................................ 39

Microchip Internet Web Site................................................ 55

Migrating from other PIC Microcontroller Devices .............. 52

Mode

B

Boot Loader ........................................................................ 33

HID-DIGITIZER .......................................................... 17

HID-MOUSE............................................................... 14

UART, HID-GENERIC................................................ 14

Mode Detect/Select ............................................................ 13

C

Calibration........................................................................... 29

COMMAND

N

CALIBRATE................................................................ 22

EE_READ ................................................................... 23

EE_READ_PARAMS.................................................. 24

EE_WRITE.................................................................. 23

EE_WRITE_PARAMS ................................................ 24

REG_READ ................................................................ 22

REG_WRITE............................................................... 23

USB_MODE_DIGITIZER............................................ 24

USB_MODE_GENERIC ............................................. 24

USB_MODE_MOUSE................................................. 24

Command

Noise Considerations.......................................................... 11

O

Operation............................................................................ 29

Overview............................................................................... 5

P

Packaging........................................................................... 41

Marking....................................................................... 41

PDIP Details ............................................................... 43

Physical .............................................................................. 13

Power Requirements............................................................ 3

FLUSH ........................................................................ 36

INIT ............................................................................. 35

READ.......................................................................... 35

RESET........................................................................ 34

TOUCH_DISABLE...................................................... 22

TOUCH_ENABLE....................................................... 22

VERSION.................................................................... 34

WRITE ........................................................................ 35

WRITE_MODE............................................................ 36

Command Packets.............................................................. 17

Command Summary ........................................................... 34

Commands.......................................................................... 21

Communication............................................................... 3, 13

Configuration....................................................................... 29

Configuration Registers ...................................................... 25

Configure Sensor Type ....................................................... 31

Customer Change Notification Service ............................... 55

Customer Notification Service............................................. 55

Customer Support............................................................... 55

R

Reader Response............................................................... 56

Revision History.................................................................. 51

S

Schematic............................................................................. 9

Sensor Attachment ............................................................. 10

Sleep .................................................................................. 31

Special Features................................................................... 3

T

Touch Modes........................................................................ 3

Touch Reports.................................................................... 14

Touch Resolution.................................................................. 3

Touch Sensor Support.......................................................... 3

U

UART Mode........................................................................ 13

USB Mode .......................................................................... 14

USB Mode Change............................................................. 31

D

Data Protocol ...................................................................... 14

Device Overview ................................................................... 5

W

E

WWW Address ................................................................... 55

WWW, On-Line Support ....................................................... 4

EEPROM Map .................................................................... 37

Electrical Specifications ...................................................... 39

Errata .................................................................................... 4

ESD Considerations............................................................ 11

H

Hardware .............................................................................. 9

I

Implementation - Quick Start ................................................ 7

Internet Address.................................................................. 55

L

LED ..................................................................................... 31

 2011 Microchip Technology Inc.

DS41606B-page 53

AR1100 RESISTIVE USB AND RS-232 TOUCH SCREEN CONTROLLER

NOTES:

DS41606B-page 54

 2011 Microchip Technology Inc.

AR1100 RESISTIVE USB AND RS-232 TOUCH SCREEN CONTROLLER

THE MICROCHIP WEB SITE

CUSTOMER SUPPORT

Microchip provides online support via our WWW site at

www.microchip.com. This web site is used as a means

to make files and information easily available to

customers. Accessible by using your favorite Internet

browser, the web site contains the following

information:

Users of Microchip products can receive assistance

through several channels:

• Distributor or Representative

• Local Sales Office

• Field Application Engineer (FAE)

• Technical Support

• Product Support – Data sheets and errata,

application notes and sample programs, design

resources, user’s guides and hardware support

documents, latest software releases and archived

software

• Development Systems Information Line

Customers

should

contact

their

distributor,

representative or field application engineer (FAE) for

support. Local sales offices are also available to help

customers. A listing of sales offices and locations is

included in the back of this document.

• General Technical Support – Frequently Asked

Questions (FAQ), technical support requests,

online discussion groups, Microchip consultant

program member listing

Technical support is available through the web site

at: http://microchip.com/support

• Business of Microchip – Product selector and

ordering guides, latest Microchip press releases,

listing of seminars and events, listings of

Microchip sales offices, distributors and factory

representatives

CUSTOMER CHANGE NOTIFICATION

SERVICE

Microchip’s customer notification service helps keep

customers current on Microchip products. Subscribers

will receive e-mail notification whenever there are

changes, updates, revisions or errata related to a

specified product family or development tool of interest.

To register, access the Microchip web site at

www.microchip.com. Under “Support”, click on

“Customer Change Notification” and follow the

registration instructions.

 2011 Microchip Technology Inc.

DS41606B-page 55

AR1100 RESISTIVE USB AND RS-232 TOUCH SCREEN CONTROLLER

READER RESPONSE

It is our intention to provide you with the best documentation possible to ensure successful use of your Microchip

product. If you wish to provide your comments on organization, clarity, subject matter, and ways in which our

documentation can better serve you, please FAX your comments to the Technical Publications Manager at

(480) 792-4150.

Please list the following information, and use this outline to provide us with your comments about this document.

TO:

RE:

Technical Publications Manager

Reader Response

Total Pages Sent ________

From:

Name

Company

Address

City / State / ZIP / Country

Telephone: (_______) _________ - _________

FAX: (______) _________ - _________

Application (optional):

Would you like a reply?

Y

N

Device: AR1100 Resistive USB and RS-232 Touch Screen Controller

Literature Number: DS41606B

Questions:

1. What are the best features of this document?

2. How does this document meet your hardware and software development needs?

3. Do you find the organization of this document easy to follow? If not, why?

4. What additions to the document do you think would enhance the structure and subject?

5. What deletions from the document could be made without affecting the overall usefulness?

6. Is there any incorrect or misleading information (what and where)?

7. How would you improve this document?

DS41606B-page 56

 2011 Microchip Technology Inc.

AR1100 RESISTIVE USB AND RS-232 TOUCH SCREEN CONTROLLER

PRODUCT IDENTIFICATION SYSTEM

To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office.

(1)

[X]

PART NO.

X

/XX

XXX

-

Examples:

Device Tape and Reel

Option

Temperature

Range

Package

Pattern

a)

b)

AR1100 - I/MQ: Industrial temperature, 20LD

QFN Package.

AR1100T - I/MQ: Tape and Reel, Industrial

temperature, 20LD QFN Package

c)

d)

e)

f)

AR1100 - I/SO: Industrial temperature, 20LD

SOIC Package.

AR1100T - I/SO: Tape and Reel, Industrial tem-

perature, 20LD SOIC Package

AR1100 - I/SS: Industrial temperature, 20LD

SSOP Package

AR1100T - I/SS: Tape and Reel, Industrial tem-

perature, 20LD SSOP Package

Device:

AR1100: Resistive USB and RS-232 Touch Screen

Controller

AR1100T: Resistive USB and RS-232 Touch Screen

Controller (Tape and Reel)

Temperature

Range:

I

=

-40C to +85C (Industrial)

Package:

MQ

SO

SS

=

Plastic Quad Flat, No Lead Package

5x5x0.09 mm Body (QFN), 20-Lead

Plastic Small Outline - Wide, 7.50 mm Body (SO),

20-Lead

Plastic Shrink Small Outline - 5.30 mm Body (SS),

20-Lead

 2011 Microchip Technology Inc.

DS41606B-page 57

Worldwide Sales and Service

AMERICAS

ASIA/PACIFIC

EUROPE

Corporate Office

2355 West Chandler Blvd.

Chandler, AZ 85224-6199

Tel: 480-792-7200

Fax: 480-792-7277

Technical Support:

http://www.microchip.com/

support

Asia Pacific Office

Suites 3707-14, 37th Floor

Tower 6, The Gateway

Harbour City, Kowloon

Hong Kong

Tel: 852-2401-1200

Fax: 852-2401-3431

India - Bangalore

Tel: 91-80-3090-4444

Fax: 91-80-3090-4123

Austria - Wels

Tel: 43-7242-2244-39

Fax: 43-7242-2244-393

Denmark - Copenhagen

Tel: 45-4450-2828

Fax: 45-4485-2829

India - New Delhi

Tel: 91-11-4160-8631

Fax: 91-11-4160-8632

France - Paris

Tel: 33-1-69-53-63-20

Fax: 33-1-69-30-90-79

India - Pune

Tel: 91-20-2566-1512

Fax: 91-20-2566-1513

Australia - Sydney

Tel: 61-2-9868-6733

Fax: 61-2-9868-6755

Web Address:

www.microchip.com

Germany - Munich

Tel: 49-89-627-144-0

Fax: 49-89-627-144-44

Japan - Yokohama

Tel: 81-45-471- 6166

Fax: 81-45-471-6122

Atlanta

Duluth, GA

Tel: 678-957-9614

Fax: 678-957-1455

China - Beijing

Tel: 86-10-8569-7000

Fax: 86-10-8528-2104

Italy - Milan

Tel: 39-0331-742611

Fax: 39-0331-466781

Korea - Daegu

Tel: 82-53-744-4301

Fax: 82-53-744-4302

China - Chengdu

Tel: 86-28-8665-5511

Fax: 86-28-8665-7889

Boston

Westborough, MA

Tel: 774-760-0087

Fax: 774-760-0088

Netherlands - Drunen

Tel: 31-416-690399

Fax: 31-416-690340

Korea - Seoul

China - Chongqing

Tel: 86-23-8980-9588

Fax: 86-23-8980-9500

Tel: 82-2-554-7200

Fax: 82-2-558-5932 or

82-2-558-5934

Chicago

Itasca, IL

Tel: 630-285-0071

Fax: 630-285-0075

Spain - Madrid

Tel: 34-91-708-08-90

Fax: 34-91-708-08-91

China - Hangzhou

Tel: 86-571-2819-3187

Fax: 86-571-2819-3189

Malaysia - Kuala Lumpur

Tel: 60-3-6201-9857

Fax: 60-3-6201-9859

UK - Wokingham

Tel: 44-118-921-5869

Fax: 44-118-921-5820

Cleveland

Independence, OH

Tel: 216-447-0464

Fax: 216-447-0643

China - Hong Kong SAR

Tel: 852-2401-1200

Fax: 852-2401-3431

Malaysia - Penang

Tel: 60-4-227-8870

Fax: 60-4-227-4068

Dallas

Addison, TX

Tel: 972-818-7423

Fax: 972-818-2924

China - Nanjing

Tel: 86-25-8473-2460

Fax: 86-25-8473-2470

Philippines - Manila

Tel: 63-2-634-9065

Fax: 63-2-634-9069

China - Qingdao

Tel: 86-532-8502-7355

Fax: 86-532-8502-7205

Singapore

Tel: 65-6334-8870

Fax: 65-6334-8850

Detroit

Farmington Hills, MI

Tel: 248-538-2250

Fax: 248-538-2260

China - Shanghai

Tel: 86-21-5407-5533

Fax: 86-21-5407-5066

Taiwan - Hsin Chu

Tel: 886-3-5778-366

Fax: 886-3-5770-955

Indianapolis

Noblesville, IN

Tel: 317-773-8323

Fax: 317-773-5453

China - Shenyang

Tel: 86-24-2334-2829

Fax: 86-24-2334-2393

Taiwan - Kaohsiung

Tel: 886-7-536-4818

Fax: 886-7-330-9305

Los Angeles

China - Shenzhen

Tel: 86-755-8203-2660

Fax: 86-755-8203-1760

Taiwan - Taipei

Tel: 886-2-2500-6610

Fax: 886-2-2508-0102

Mission Viejo, CA

Tel: 949-462-9523

Fax: 949-462-9608

China - Wuhan

Tel: 86-27-5980-5300

Fax: 86-27-5980-5118

Thailand - Bangkok

Tel: 66-2-694-1351

Fax: 66-2-694-1350

Santa Clara

Santa Clara, CA

Tel: 408-961-6444

Fax: 408-961-6445

China - Xian

Tel: 86-29-8833-7252

Fax: 86-29-8833-7256

Toronto

Mississauga, Ontario,

Canada

China - Xiamen

Tel: 905-673-0699

Fax: 905-673-6509

Tel: 86-592-2388138

Fax: 86-592-2388130

China - Zhuhai

Tel: 86-756-3210040

Fax: 86-756-3210049

08/02/11

DS41606B-page 58

 2011 Microchip Technology Inc.


型号：	AR1100-I/MQ
厂家：	MICROCHIP
描述：	SPECIALTY MICROPROCESSOR CIRCUIT, PQCC20, 5 X 5 MM, 0.90 MM HEIGHT, ROHS COMPLIANT, PLASTIC, QFN-20 外围集成电路
文件：	总58页 (文件大小：1957K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

AR1100-I/MQ [MICROCHIP]

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