LM2068RFW-4_V01 [TOPWAY]
LCD Module User Manual;
| 型号： | LM2068RFW-4_V01 |
| 厂家： | 
TOPWAY |
| 描述： | LCD Module User Manual CD |
| 文件： | 总12页 (文件大小：774K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
LM2068RFW-4
LCD Module User Manual
Prepared by:
Checked by:
Approved by:
Huangdx
Date: 2019-06-19
Date:
Date:
Rev. Descriptions
Release Date
0.1
0.2
Preliminary new release
Update 2. Absolute Maximum Ratings
2015-06-08
2019-06-19
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Document Name: LM2068RFW-4-Manual-Rev0.2
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TOPWAY
LCD Module User Manual
LM2068RFW-4
Table of Content
1. Basic Specifications.............................................................................................................. 3
1.1
1.2
1.3
1.4
Display Specifications ..................................................................................................................................................3
Mechanical Specifications............................................................................................................................................3
Block Diagram ..............................................................................................................................................................3
Terminal Functions.......................................................................................................................................................4
2. Absolute Maximum Ratings.................................................................................................. 5
3. Electrical Characteristics...................................................................................................... 5
3.1
3.2
3.3
DC Characteristics........................................................................................................................................................5
LED Backlight Circuit Characteristics..........................................................................................................................5
AC Characteristics........................................................................................................................................................6
4. Function Specifications ........................................................................................................ 7
4.1
4.2
4.3
4.4
4.5
Adjusting the Display Contrast.....................................................................................................................................7
Resetting the LCD module...........................................................................................................................................7
Display Pixel Map.........................................................................................................................................................7
Control Data and Command ........................................................................................................................................8
Register Table Summary .............................................................................................................................................8
5. Design and Handling Precaution........................................................................................ 12
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TOPWAY
LCD Module User Manual
LM2068RFW-4
1. Basic Specifications
1.1 Display Specifications
1) LCD Display Mode
2) Display Color
: STN,Blue,Negative, Transmissive
: Display Data = “1” : Light Gray (*1)
: Display Data = “0” : Deep Blue(*2)
: 9 H
: 1/240 duty, 1/12 bias
: White LED
3) Viewing Angle
4) Driving Method
5) Backlight
Note:
*1. Color tone may slightly change by Temperature and Driving Condition.
*2. The Color is defined as the inactive / background color
*3. Fine Contrast adjustment function is necessary in the application design for optimal display result
1.2 Mechanical Specifications
1) Outline Dimension
: 99.5 x 71.75 x 10.4 (exclude FPC terminal)
see attached Outline Drawing for details
1.3 Block Diagram
BLA
BLK
Backlight Circuit
320 x 240 pixels
LCD Panel
Power
& Booster
Circuit
S6B0794
or equivalent
S6B0794
or equivalent
VDD, VSS
VOUT, V0
/WR, /RD, /CS, RS, /RST
DB0~DB7
RA8806 or equivalent
BUSY
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LCD Module User Manual
LM2068RFW-4
1.4 Terminal Functions
Pin
No.
1
2
3
4
5
6
Pin
Name
VSS
VDD
V0
/WR
/RD
/CS
I/O
Descriptions
Power
Power
Input
Input
Input
Input
0V Power Supply, GND
Positive Power Supply
LCD Contrast Reference Input
Write enable input, active LOW
Read enable input, active LOW
Chip Select Signal
/CS=LOW: Data IO is enabled
7
8
RS
Input
Input
I/O
Register Select
RS=HIGH: data on DB0 to DB7 is display data
RS=LOW: data on DB0 to DB7 is control data
/RST
Reset Signal:
/RST = L, Reset the LCD Module
/RST = H, Normal Running
9
:
DB0
:
8-bit bi-directional data bus
16
17
DB7
BUSY
OUTPUT Controller busy signal,
MCU should poll this signal before accessing the LCD module
Power Booster Output for V0
18
19
20
VOUT
BLA
BLK
Power
Power
Power
Positive Power Supply for LED backlight
Negative Power Supply for LED backlight
Note: For enable BUSY output, the REG[A0] D0, D1, D2 or D3 should be set to hi.
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LCD Module User Manual
LM2068RFW-4
2. Absolute Maximum Ratings
Items
Symbol
VDD
Min.
0
VSS-0.3
-30
Max.
+5.5
VDD+0.3
+70
Unit
V
V
°C
°C
Condition
VSS = 0V
Supply Voltage
Input Voltage
Operating Temperature
Storage Temperature
Cautions:
VSS = 0V
VIN
TOP
TST
No Condensation
No Condensation
-40
+80
Any Stresses exceeding the Absolute Maximum Ratings may cause substantial damage to the device. Functional operation of this
device at other conditions beyond those listed in the specification is not implied and prolonged exposure to extreme conditions may
affect device reliability.
3. Electrical Characteristics
3.1 DC Characteristics
VSS=0V, VDD =5.0V, TOP =25°C
Unit Applicable Pin
Items
Symbol
MIN.
TYP.
MAX.
VDD
Operating Voltage
VDD
-
5.0
5.5
V
DB0~DB7, /WR, /RD, /CS,
RS, /RST
Input High Voltage
VIN
0.7xVDD
-
VDD
V
DB0~DB7, /WR, /RD, /CS,
RS, /RST
VDD
Input Low Voltage
Operating Current
VIN
IDD
0
-
-
0.25x VDD
45.5
V
18.2
mA
3.2 LED Backlight Circuit Characteristics
BLK=0V, IfBLA=100mA, TOP =25°C
Items
Forward Voltage
Forward Current
Cautions:
Symbol
VfBLA
MIN.
-
-
TYP.
5.0
100
MAX.
-
120
Unit
V
Applicable Pin
BLA
BLA
IfBLA
mA
Exceeding the recommended driving current could cause substantial damage to the backlight and shorten its lifetime.
BLA
VSS
No. of LED = 6pcs
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LCD Module User Manual
LM2068RFW-4
3.3 AC Characteristics
3.3.1 8080 Mode System Bus Timing
VSS=0V, VDD=5.0V, TOP=25°C
Item
Symbol
tcyc8
tcc8
tas8
tah8
tds8
tdh8
tacc8
toh8
MIN.
320
63
10
25
38
25
-
TYP.
MAX.
Unit
ns
ns
ns
ns
ns
ns
ns
ns
System Cycle Time (*2)
Strobe Pulse Width
Address Setup Time
Address Hold Time
Data Setup Time
Data Hold Time
-
-
-
-
-
-
-
-
-
-
-
-
25
13
Data Access Time
Output disable Time
-
Note: *1. Input signal rise/fall time should be less than 20ns
*2. System clock=6MHz
*3.Bus timing is for one byte transaction only.
For details,please refer to RA8806 datasheet.
Bus Timing Diagram
3.3.2 Reset Timing
VSS=0V, VDD=5.0V, TOP=25°C
Item
Symbol
trs
MIN.
1.3
1.3
TYP.
MAX.
Unit
ms
ms
us
Reset setup time
Reset hold time
Reset active time (*1)
-
-
-
-
-
-
trh
trst
222
Reset Timing Diagram
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LCD Module User Manual
LM2068RFW-4
4. Function Specifications
4.1 Adjusting the Display Contrast
A Variable-Resistor must be connected to the LCD module for providing a reference to V0.
Adjusting the VR will result the change of LCD display contrast.
The recommended value of VR is 25k to 50k
LCD module
VDD
VOUT
VR
V0
VSS
4.2 Resetting the LCD module
The LCD module should be initialized by using /RST terminal.
While turning on the VDD and VSS power supply, maintain /RST terminal at LOW level. After the
power supply stabilized, release the reset terminal (/RST=HIGH)
4.3 Display Pixel Map
1,1
(D7)
2,1
(D6)
3,1
(D5)
4,1
(D4)
5,1
(D3)
316,1
(D4)
317,1
(D3)
318,1
(D2)
319,1
(D1)
320,1
(D0)
- - -
- - -
- - -
- - -
- - -
- - -
1,2
(D7)
2,2
(D6)
3,2
(D5)
4,2
(D4)
5,2
(D3)
316,2
(D4)
317,2
(D3)
318,2
(D2)
319,2
(D1)
320,2
(D0)
1,3
(D7)
2,3
(D6)
3,3
(D5)
4,3
(D4)
5,3
(D3)
316,3
(D4)
317,3
(D3)
318,3
(D2)
319,3
(D1)
320,3
(D0)
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
1,238
(D7)
2,238
(D6)
3,238
(D5)
4,238
(D4)
5,238
(D3)
316,238 317,238 318,238 319,238 320,238
(D4) (D3) (D2) (D1) (D0)
- - -
- - -
- - -
- - -
- - -
- - -
1,239
(D7)
2,239
(D6)
3,239
(D5)
4,239
(D4)
5,239
(D3)
316,239 317,239 318,239 319,239 320,239
(D4) (D3) (D2) (D1) (D0)
1,240
(D7)
2,240
(D6)
3,240
(D5)
4,240
(D4)
5,240
(D3)
316,240 317,240 318,240 319,240 320,240
(D4) (D3) (D2) (D1) (D0)
Pixel mapping (Top View)
Based on the top view of the LCD module,
the 1, 1 (x, y) pixel is the upper-left pixel;
the 320, 240 (x, y) pixel is the lower-right pixel.
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LCD Module User Manual
LM2068RFW-4
4.4 Control Data and Command
The LCD module setting is controlled by the internal Register Values.
The Register Address and Register Value should be issued in sequence and they are addressed
as Control Data.
A full command sequence should be as follow.
Steps
/RD
1
1
/WR
0
0
RS
0
0
Data (DB0~ DB7)
Register Address
Register Value
1st
2nd
4.5 Register Table Summary
Reg.
Add
Reg.
Name R/W
Descriptions
MBUSY: Memory Write Busy Flag
1=Busy when write font or clear RAM; 0=not busy
SBUSY: Scan Busy Flag
1=Busy when driver scan logic is not idle; 0=not busy
SLEEP: Sleep state
1= In Sleep mode; 0=In Normal mode
WAKE_STS: Wakeup Status Bit Same as REG[0FH] Bit2
KS_STS: Key Status Bit
TP_STS: Tp Status Bit
PWR : Power Mode
Same as REG[0FH] Bit1
Same as REG[0FH] Bit0
--
00h
R
R/W
STATUS
WLCR
1=In Sleep Mode; 0=In Normal Mode
LINER: linear Decode Mode
1=User-defined ROM mapping rule; 0=GIG5/GB ROM mapping
rule
SR : Software Reset
1=reset all register (except DDRAM); 0=normal operation
CG : Display mode selection
1=Character Mode; 0=Graphic Mode
DP : Display on off control
1=normal display; 0=display off
BK : Full screen blinking control
1=blinking (blink time is set by REG 80H); 0=normal;
DV : Full screen inverse control
1=Inverse Full Screen; 0=Normal
NO_FLICKER : Eliminating Flicker
MISC
01h
R/W
1=enable, scan will auto-pending when busy; 0=disable
CKN : Clock Output in pin CLK_OUT
1=The pin indicates SLEEP state of STATUS REG;
0=The pin output internal system clock
BUSY_LEV : Busy Polarity(for “BUSY” pin)
1=Set Active High; 0=Set Active Low
INT_LEV: Interrupt Polarity (for “INT” pin)
1=Set Active High; 0=Set Active Low
XCK_SEL[1:0] : Driver Clock Selection
00=CLK/8; 01=CLK/4(Default); 10=CLK/2; 11=CLK
The CLK means system clock
SDIR:SEG Scan Direction
1=SEG order is 319~0; 0=SEG order is 0~319
CDIR: COM Scan Direction
1=COM order is 239~0; 0=COM order is 0~239
SCR_PEND : scroll Function Pending
ADSR
03h
R/W
1=Scroll function pending; 0=Scroll function keep active
BIT_INV : Set driver data output BIT Order
1=inverse order (BIT7 to BIT0, BIT6 to BIT1, and so on;
0=Normal order
SCR_DIR : Scroll Direction
When SCR_HV=1, 1= Bottom -> Top; 0= Top -> Bottom
When SCR_HV=0, 1=Right -> Left; 0=Left -> Right
SCR_HV : Scroll Horizontal/Vertical Selection
1= Common Scrolling(Vertical); 0= Segment Scrolling(Horizontal)
SCR_EN : Scroll Enable
1=Scroll function enable; 0=Scroll function disable
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Register Table Summary (cont’)
LCD Module User Manual
LM2068RFW-4
Reg.
Add
Reg.
Name R/W
Descriptions
WAKI_EN : Wakeup Interrupt Mask
INTR
0FH
R/W
1=enable ; 0=disable
KEYI_EN : Key-Scan Interrupt Mask
1=enable ; 0=disable
TPI_EN : Touch Panel Interrupt Mask
1=Generate interrupt output if TP was detected; 0=disable
TP_ACT : Touch Panel Event (only read)
1=TP is touched;0=TP is not touched
WAK_STS : Wakeup Interrupt Status bit
1=Indicate wake-up event happen from Sleep mode
0=Indicate no wake-up happen
User must write 0 to clear the status bit
KEY_STS : Key-Scan Interrupt Status bit
1=Key-Scan Detect Key input; 0=Key-Scan don’t Delete key input
User must write 0 to clear the status bit
TP_STS : Touch Panel Detect Status bit
1= TP touched; 0=TP untouched
User must write 0 to clear the status bit
CUR_INC : Auto-increase Cursor Position in reading/writing
DDRAM operation
WCCR
10h
R/W
1=disable; 0=enable
FILL_OFS: Full-size and Half-size Character Alignment
1=Full-size alignment in Full-size and Half-size mixed mode;
0=disable
BIT_REV : Reversed Data Write mode
1= inversely; 0= directly
BOLD : Set Bold font (char mode only)
1=bold; 0=normal
T90DEG : Font Rotate mode (Font rotated 90 degree)
1=enable; 0=normal
CUR_EN : Cursor display control
1=on; 0=off
CUR_BLK : Cursor blink control
1=blinking; 0=normal (Blink time is determined by REG 80H)
CURH[3:0] : Cursor Height (Vertical direction, horizontal is fix)
0000b : Cursor height 1pixel
0001b : Cursor height 2 pixels
……
CHWI
11h
R/W
1111b : Cursor height 16 pixels
ROWH[3:0] : Char Line Gap
0000b : Char LineGap 1pixel
0001b : Char LineGap 2 pixels
……
1111b : Char LineGap 16 pixels
CUR_HV : Cursor Auto Shifting Direction(only Graphic Mode)
1= Vertical then Horizontal; 0= Horizontal then Vertical
DISPMD[2:0] : Display Layer and Display Mode Selection
001=page1 only(default); 010=page2 only;
MAMR
12h
R/W
011=combine two layer; 000=gray scale mode
110=extended mode1, 111=extended mode2
L_MIX[1:0] : two layer mode setting
00=OR; 01=XOR; 10=NOR; 11=AND
MW[1:0] : Layer Read/Write Selection
00=CGRAM(512Byte); 01=page1; 10=page2;
11=page1 & page2 at the same time
AWR[5:0]: Active Window Right Position ->Segment-Right
AWRR
DWRR
AWBR
20h
21h
30h
R/W
R/W
R/W
Default Value:27h
DWW[5:0] : Display Window Width Position -> Segment-Width
Segment-Width = (Segment Number / 8) – 1
Default Value:27h
AWT[7:0] : Active Window Bottom Position->Common-Bottom
Default Value: efh
DWH[7:0] : Display Window Bottom Position->Common-Height
Common-Height = LCD Common Number – 1
Default Value: efh
DWHR
31h
R/W
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Register Table Summary (cont’)
LCD Module User Manual
LM2068RFW-4
Reg.
Add
Reg.
Name R/W
Descriptions
AWL[5:0] : Active Window Left Position-> Segment-Left
AWLR
AWTR
CURX
BGSG
EDSG
CURY
BGCM
EDCM
BTMR
40h
50h
60h
61h
62h
70h
71h
72h
80h
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Default Value:00h
AWT[7:0] : Active Window Top Position -> Common- Top
Default Value:00h
CURX[5:0] : Cursor Position of Segment /CGRAM address[4:0]
BGSG[5:0] : Segment Start Position of Scrolling Mode
EDSG[5:0] : Segment End Position of Scrolling Mode
RC7~RC0 : Cursor Position of Common /CGRAM address[8:5]
BGCM[7:0] : Common Start Position of Scrolling Mode
EDCN[7:0] : Common Ending Position of Scrolling Mode
BLKT[7:0] : Cursor Blink Time and Scroll Time
Blinking Time = Bit[7:0] x (Frame width)
Frame width = 1 / Frame Rate
ITC[7:0] : Idle Time Setting, In count of system clock
FR_time = COM_NO x （SEG_NO / 4 + ITC ）/ XCK
FR_time = 1 / Frame Rate
ITCR
90h
A0h
R/W
R/W
KSCR1[7] : Key Scan Enable
KSCR1
1=enable, 0=disable
KSCR1[6] : Key Scan Enable
1 : 4x8 Matrix(KOUT[3:0] is used, KOUT[7:4] please keep floating)
0 : 8x8 Matrix(KOUT[7:0] is used)
KSCR1[5:4] : Key Scan Data Sampling Times
00: 4, 01: 8, 10: 16, 11:32
KSCR1[3] : Long Time Key Function
1=enable, 00=disable
KSCR1[2:0] : Key Scan Freq
KSCR2[7] : Key Scan Wakeup Function
1=enable, 0=disable
KSCR2
A1h
R/W
KSCR2[3:2] : Long Key Timing Adjustment
KSCR2[1:0] : Number of Key Hit
KSDR0[7:0] : Key Strobe Data
KSDR1[7:0] : Key Strobe Data
KSDR2[7:0] : Key Strobe Data
KSDR0
KSDR1
KSDR2
A2h
A3h
A4h
R
R
R
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LCD Module User Manual
LM2068RFW-4
Register Table Summary (cont’)
MWD[7:0] : The Data is written to memory under the cursor
position
MWCR
B0h
W
MRD[7:0] : The Data is Read from memory under the cursor
position
MRCR
TPCR1
B1h
C0h
R
TPCR1[7] : Touch Panel Enable
1=enable, 0=disable
R/W
TPCR1[6:4] : Touch Panel Sample Time adjustment
TPCR1[3] : Touch Panel Wake-Up
1=enable, 0=disable
TPCR1[2:0] : Touch Panel ADC Convert Speed
TPXR[7:0] : Touch Panel X Data Bit[9:2]
TPXR
TPYR
TPZR
C1h
C2h
C3h
C4h
R
R
TPYR[7:0] : Touch Panel Y Data Bit[9:2]
TPZR[3:2] : Touch Panel Y Data Bit[1:0]
TPZR[1:0] : Touch Panel X Data Bit[1:0]
R
TPCR2[7] : TP Manual Mode
TPCR2
R/W
1=manual mode, 0=auto mode
TPCR2[1:0] : TP manual mode Options
PND[7:0] : Data Written to DDRAM when REGF0H Bit3=1
PNTR
FNCR
E0h
F0h
R/W
R/W
ISO8859_EN : ISO8859 Mode
1=disable; 0=enable
MCLR : Memory Clear function
1=enable fill data of REG E0H to DDRAM under Active Window
area; 0=no action;
ASC : Font ROM range select
1=decode as ASCII; 0=auto treat as ASCII or GB
ASC_SEL[1:0] : ASCII Block Selection
00=map to ASCII block 1; 01=map to ASCII block 2;
10=map to ASCII block 3; 11=map to ASCII block 4
FH1~FV0 : Font Horizontal Size
00=1x; 01=2x; 10=3x; 11=4x
FV1~FV0 : Font Vertical Size
00=1x; 01=2x; 10=3x; 11=4x
FVHT
F1h
R/W
Note:
*1. It is suggested to check the BUSY before sending the Control Data.
*2. For the details, please refer to RA8806 Data sheet.
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LCD Module User Manual
LM2068RFW-4
5. Design and Handling Precaution
1.
2.
3.
The LCD panel is made by glass. Any mechanical shock (eg. dropping form high place)
will damage the LCD module.
Do not add excessive force on the surface of the display, which may cause the Display
color change abnormally.
The polarizer on the LCD is easily get scratched. If possible, do not remove the LCD
protective film until the last step of installation.
4.
5.
Never attempt to disassemble or rework the LCD module.
Only Clean the LCD with Isopropyl Alcohol or Ethyl Alcohol. Other solvents (eg. water)
may damage the LCD.
6.
7.
When mounting the LCD module, make sure that it is free form twisting, warping and
distortion.
Ensure to provide enough space (with cushion) between case and LCD panel to
prevent external force adding on it, or it may cause damage to the LCD or degrade the
display result.
8.
Only hold the LCD module by its side. Never hold LCD module by add force on the heat
seal or TAB.
9.
Never add force to component of the LCD module. It may cause invisible damage or
degrade of the reliability.
10.
11.
LCD module could be easily damaged by static electricity. Be careful to maintain an
optimum anti-static work environment to protect the LCD module.
When peeling off the protective film from LCD, static charge may cause abnormal
display pattern. It is normal and will resume to normal in a short while.
Take care and prevent get hurt by the LCD panel sharp edge.
Never operate the LCD module exceed the absolute maximum ratings.
Keep the signal line as short as possible to prevent noisy signal applying to LCD
module.
12.
13.
14.
15.
16.
Never apply signal to the LCD module without power supply.
IC chip (eg. TAB or COG) is sensitive to the light. Strong lighting environment could
possibly cause malfunction. Light sealing structure casing is recommend.
LCD module reliability may be reduced by temperature shock.
When storing the LCD module, avoid exposure to the direct sunlight, high humidity, high
temperature or low temperature. They may damage or degrade the LCD module
17.
18.
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