IN44780_技术文档

TECHNICAL DATA

IN44780

DOT MATRIX LIQUID CRYSTAL DISPLAY

CONTROLLER & DRIVER

FEATURES

FUNCTION

• Internal Memory

• Character type dot matrix LCD driver & controller

• Internal driver: 16 common and 40 segment signal output

• Display character format: 5 x 7 dots + cursor,

5 x 10 dots + cursor

-

Character Generator ROM: 8320 bits

Character Generator RAM: 512 bit

Display Data RAM: 80 x 8 bits for 80 digits

• Internal automatic reset circuit at power ON

• Internal oscillation circuit

• Easy interface with a 4-bit or 8-bit MPU

• Display character pattern:

• Power Supply Voltage: +5V ± 10%

• LCD Driving Voltage for display: 0 ~ -5V(V₅)

• Duty factor selection (sselected by programs)

1/8 duty: 5 x 7 dots format 1 line,

1/11 duty: 5 x 10 dots format 1 line

1/16 duty: 5 x 7 dots format 2 line

• Bare chip available

5 x 7 dots format: 192 kinds, 5 x 10 dots format: 32 kinds

• The special character pattern can be programmable by

Character Generator RAM directly

• A customer character pattern can be programmable by mask

option

• Wide range of instruction function:

Display clear, Cursor home, Display ON/OFF, Display shift

Cursor ON/OFF, Display character blink, Cursor shift

• Pin-to-Pin replacement for KS0066, HD44780,

SED1278

DESCRIPTION

The IZ44780 is a dot matrix liquid crystal display controller & driver LSI that displays alphanumerics,

characters and symbols.

It drives dot matrix LCD under microcomputer control. All functions needed for dot matrix LCD drive are internally

provided

on one chip.

ODERING INFORMATION

Type

CGROM

Numberal

IZ44780 – 00

English

Russian

IZ44780 – 01

IZ44780 – XX

Numberal

Japanese

Custom font (XX – ROM code)

ABSOLUTE MAXIMUM RATINGS

Characteristic

Symbol

Value

Unit

Power Supply Voltage

Driver Supply Voltage

Input Voltage

Operating Temperature

Storage Temperature

V_DD

V₁~ V₅

V_I

T_a

T_stg

- 0.3 ~ 7.0

V

V_DD- 13.5 ~ V_DD+ 0.3

-0.3 ~V_DD+ 0.3

- 20 ~ + 75

V

^oC

- 55 ~ + 125

Notes: Must keep the relation of V_DD≥ V₁≥ V₂≥ V₃≥ V₄≥ V₅

1

IZ44780

BLOCK DIAGRAM

V1

Power

supply

for

LCD

Drive

Parallel/ Serial

Data conversion

Circuit

V2

V3

V4

V5

5

Busy

Flag

Cursor

Blink

Control

Circuit

Char acter

Generator

RAM

Character

Generator

ROM

512 bits

8320 bits

DB

0

~DB

3

4

DB4

~DB

7

8

SEG1

to

SEG40

40

8

Data

Register

I/ O

Buffer

Segment

Sign al

Driver

40 - bit

Shift

Register

40 - bit

Latch

Circuit

40

8

7

R/ W

RS

Display

Data RAM

80 x 8 bits

E

7

8

D

Instruction

Register

Instruction

Decoder

8

7

Address

Counter

COM1

to

COM16

16 - bit

Shif t

Register

Common

Sign al

Driver

16

7

OSC1

OSC2

CLK1

Timing

Generation

Circuit

CLK2

M

V

DD

SS

2

IZ44780

ELECTRICAL CHARACTERISTICS

(Ta = 25^oC, V_DD= +5V, V_SS= 0V unless otherwise specified)

Characteristic

Symbol

Test Condition

Applicable

Terminals

Min

Typ

Max

Unit

Operating Voltage

Operating Current (*1)

V_DD

I_DD

4.5

5.5

0.6

V

Internal oscillation

or external clock

f_OSC= 270KHz

0.35

HIGH Input Voltage

LOW Input Voltage

V_IH

V_IL

E, DB₀~ DB₇,

R/W, RS

OSC1

E, DB₀~ DB₇,

R/W, RS

2.2

V_DD

V

V_DD-1.0

-0.3

V_DD

0.6

OSC1

DB₀~ DB₇

-0.2

2.4

1.0

HIGH Output Voltage

LOW Output Voltage

V_OH

V_OL

I_OH= -0.205 mA

I_OH= -40µA

I_OL= 1.2mA

I_OL= 40µA

V

CLK1, CLK2, M, D 0.9V_DD

DB₀~ DB₇

CLK1, CLK2, M, D

COM1 ~ COM16

0.4

0.1V_DD

1.0

Driver Voltage

Descending

V_COM

I_O= ± 0.1mA

V_SEG

I_LKG

I_IL

SEG1 ~ SEG40

1.0

1

-250

Input Leakage Current

Input LOW Current

V_IN=0V ~ V_DD

E

-1

-50

µA

V_CC= 5V (test pull RS, R/W,

DB₀

-125

250

50

up R)

~ DB₇

Frequency(

*1)

f_EC

125

46

350

KHz

External

Clock

Duty

Rise time

Fall time

DUTY

t_R

t_F

f_OSC1

OSC1

55

0.2

350

%

µs

Internal Clock

Frequency(*1)

Ceramic Resonator

Oscillation Frequency

(*1)

OSC1, OSC2

V₁~ V₅

190

245

270

250

KHz

Rf = 91KΩ ± 2%

f_OSC2

255

LCD Driving Voltage

(*2)

V_LCD1V_DD– V₅1/5 bias

V_LCD21/4 bias

4.6

3.0

10.0

V

Notes: *1). Oscillation circuit

3

IZ44780

Resistor circuit

External clock circuit

OSC1

OSC2

OSC1

OSC2

Rf

open

Rf: 91kΩ

+ 2%

Frequency input

*2). Input the voltage listed in table below to V₁~ V₅

Duty

Bias

1/8, 1/11

1/16

1/5

1/4

Power supply

V₁

V₂

V₃

V₄

V₅

V_DD– V_LCD/4

V_DD– V_LCD/2

V_DD– 3V_LCD/4

V_DD– V_LCD

V_DD– V_LCD/5

V_DD– 2V_LCD/5

V_DD– 3V_LCD/5

V_DD– 4V_LCD/5

V_DD– V_LCD

*V_LCDis the LCD driving voltage, refer to the initial set of the instruction code.

AC CHARACTERISTICS (V_DD= 5V, V_SS= 0V, Ta = 25^oC)

(1) Write mode (Writing data from MPU to IZ44780)

Characteristic

E Cycle Time

Symbol

Test pin

Min

Typ

Max

Unit

t_C

t_R

E

500

ns

E Rise Time

25

E Fall Time

t_F

E

E Pulse Width (High, Low)

R/W and RS Set-up Time

R/W and RS Hold Time

Data Set-up Time

Data Hold Time

t_W

E

220

40

t_SU1

t_H1

t_SU2

t_H2

R/W, RS

DB₀~ DB₇

10

60

10

4

IZ44780

V

IH1

IL1

V

IH1

IL1

RS

V

t

SU1

t

H1

R/ W

V

IL1

V

IL1

t

H1

t

W

V

IL1

E

t

R

t

SU2

t

H2

V

IH1

IL1

V

IH1

DB0 ~ DB7

Valid Data

V

IL1

t

C

(2) Read mode (Reading data from IZ44780 to MPU)

Characteristic

E Cycle Time

Symbol

Test pin

Min

Typ

Max

Unit

t_C

t_R

E

500

ns

E Rise Time

25

E Fall Time

t_F

E

E Pulse Width (High, Low)

R/W and RS Set-up Time

R/W and RS Hold Time

Data Output Delay Time

Data Hold Time

t_W

t_SU1

t_H1

t_D

E

220

40

R/W, RS

DB₀~ DB₇

10

120

t_H2

20

5

IZ44780

V

IH1

IL1

V

IH1

RS

V

IL1

SU

V

t

H

R/ W

V

IL1

t

W

t

H

t

F

V

IH1

V

IL1

V

IL1

V

IL1

E

t

R

t

D

t

DH

V

IH1

IL1

V

IH1

DB0 ~ DB7

Valid Data

V

IL1

V

t

C

(3) Interface mode with HD44100, KS0065

Characteristic

Symbol

Test pin

Min

Typ

Max

Unit

Clock Pulse Width High

Clock Pulse Width Low

Data Set-up Time

Data Hold Time

t_WCKH

t_WCKL

t_SU

CLK

D

800

300

500

ns

t_DH

D

Clock Set-up Time

M Delay Time

t_CSU

t_DM

CLK

M

-1000

1000

0.9VDD

CLK1

CLK2

t

WCKH

CSU

t

WCKH

t

0.9VDD

0.1VDD

t

WCK1

t

CSU

0.9VDD

0.1VDD

0.9VDD

0.1VDD

D

t

SU

t

DM

M

0.9VDD

t

DM

6

IZ44780

TERMINAL DESCRIPTION

INPUT/OUTPU

T

Name

DESCRIPTION

INTERFACE

V_DD

V_SS

Operating Voltage

Power

Supply

For logical circuit (+5V ± 10%)

0V(GND)

Power

V₁– V₅

Negative Supply

Voltage

Bias voltage level for LCD driving

SEG1–

SEG40

COM1–

COM16

OSC1

Output

Input

Segment output

Segment signal output for LCD driving

Common signal output for LCD driving

LCD

Common output

Oscillator

Both pin connected to Rf resistor or

ceramic resonator for internal oscillator

circuit. In case of external frequency use

only, the frequency is input to OSC1

terminal.

Resistor or

Ceramic

Resonator

OSC2

Output

CLK1

CLK2

Data latch clock

Data shift clock

Clock output terminal for the serially

transferred data to be latched to the driver.

Clock output terminal used when D

Output

HD44100,

terminal data output shifts the inside of the KS0065,

driver.

IZ0065

M

D

Alternated signal

for LCD driver

output

Display data

interface

The alternating signal to convert LCD

drive waveform to AC.

Character pattern data, which is

corresponding to each common signal, is

supplied to driver serially.

High

Low

Selection

Non selection

E

R/W

Input

Enable

Read/Write

Start anable signal to read or write the data MPU

R/W signal input is used to select the

read/write mode

High

Low

Read mode

Write mode

RS

Register select

Register selection input

High

Data register (for read

and write)

Low

Instruction register (for

write), Busy flag,

address counter (for

read)

DB₀–

DB₇

Input/Output

Data interface

Used for data transfer between the MPU

and IZ44780. These terminals are for data

bus with bidirectional three-state.

Initial 4 bit (DB₀-DB₃) are not used during

4 bit operation (DB₇can be used as a busy

flag)

7

IZ44780

CONTROL and DISPLAY COMMANDS

Remark

Command

RS R/W DB₇DB₆DB₅DB₄DB₃DB₂DB₁DB₀Execution time

(f_OSC=250KHz)

1.64 ms

40µs

DISPLAY CLEAR

RETURN HOME

ENTRY MODE SET

L

H

L

H

X

Cursor move to first digit

*I/D: set cursor move direction

I/D SH

I/D

H

Increase

L

Decrease

*SH: Specifies shift of display

SH

H

Display is

shifted

L

Display is not

shifted

*Display

D

DISPLAY ON/OFF

L

H

D

C

B

40µs

H

L

Display on

Display off

*Cursor

C

H

L

Cursor on

Cursor off

*Blinking

B

H

L

Blinking on

Blinking off

SHIFT

L

H

S/C R/L X

X

40µs

SC

H

L

Display shift

Cursor move

R/L

DL

H

L

Right shift

Left shift

SET FUNCTION

H

DL

N

F

X

H

L

8 bits interface

4 bits interface

N

F

H

L

2 line display

1 line display

H

L

5x10 dots

5x7 dots

CG RAM Data is sent and

received after this setting

SET CG RAM

ADDRESS

SET DD RAM

ADDRESS

READ BUSY FLAG

& ADDRESS

L

H

L

H

CG RAM address

(corresponds to cursor address)

40µs

0µs

DD RAM Data is sent and

received after this setting

H

DD RAM address

BF

H

L

Busy

Ready

BF

Address Counter used for

Both DD & CG RAM address

-Reads BF indication

internal operating

is being performed.

-Reads address

counter contents

Write data DD or CG RAM

WRITE DATA

READ DATA

H

L

H

Write Data

Read Data

46µs

Read data from DD or CG RAM

Note: X – Don’t care.

8

IZ44780

APPLICATION CIRCUIT

To MPU

V

L CD (1/ 5 b ias)

When KS0065, HD44100 is externally connected to the IZ44780, you can increase the number of

display digits up to 80 characters.

9

IZ44780

PAD LAYOUT

56

64 63 62

60 59 58 57

55

54 53 52

50 49 48 47

46 45 44 43 42

61

51

41

65

40

39

66

67

68

69

70

38

37

36

35

34

33

32

71

72

73

74

75

76

77

78

79

80

(0,0)

IZ44780

BT1578 PAD DIAGRAM

Chip size : 4000 x 4900

Pad size : 120 x 120

31

30

29

28

Unit

:

µ

m

27

26

25

10

3

4

12

15

19 20

2

5

6

13

16 17

22

23 24

11

14

18

7

8

9

21

1

PAD LOCATION (Unit: µm)

Pad No. Pad

Name

X

Y

Pad No. Pad

Name

X

Y

Pad No. Pad

Name

X

Y

1

2

3

4

5

6

7

8

SEG22

SEG21

SEG20

SEG19

SEG18

SEG17

SEG16

SEG15

SEG14

SEG13

SEG12

SEG11

SEG10

SEG9

SEG8

SEG7

SEG6

SEG5

SEG4

SEG3

SEG2

SEG1

GND

-2221

-2041

-1804

-1624

-1444

-1264

-1084

-904

-724

-544

-364

-184

-4

-1830 28

-1830 29

-1830 30

-1830 31

-1830 32

-1830 33

-1830 34

-1830 35

-1830 36

-1830 37

-1830 38

-1830 39

-1830 40

-1830 41

-1830 42

-1830 43

-1830 44

-1830 45

-1830 46

-1830 47

-1830 48

-1830 49

-1830 50

-1830 51

-1552 52

-1372 53

-1192 54

V3

V4

V5

CL1

CL2

V_CC

M

D

RS

R/W

E

DB0

DB1

DB2

DB3

DB4

DB5

DB6

DB7

COM1

COM2

COM3

COM4

COM5

COM6

COM7

COM8

2299

-1012 55

-832 56

-862 57

-472 58

-292 59

-112 60

68 61

248 62

428 63

608 64

788 65

1090 66

1270 67

1830 68

1830 69

1830 70

1830 71

1830 72

1830 73

1830 74

1830 75

1830 76

1830 77

1830 78

1830 79

1830 80

1830

COM9

COM10

COM11

COM12

COM13

COM14

COM15

COM16

SEG40

SEG39

SEG38

SEG37

SEG36

SEG35

SEG34

SEG33

SEG32

SEG31

SEG30

SEG29

SEG28

SEG27

SEG26

SEG25

SEG24

SEG23

-530

-710

1830

1404

1224

1044

864

2299

2188

2008

1812

1632

1436

1256

961

-941

-1121

-1301

-1481

-1661

-1841

-2036

-2216

-2298

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

176

35

536

716

684

504

324

144

896

1076

1256

1436

1616

1920

2100

2299

-36

-216

-396

-576

-756

-936

-1116

-1296

781

601

421

241

61

-119

-299

OSC1

OSC2

V1

V2

10


型号：	IN44780
厂家：	INTEGRAL CORP.
描述：	DOT MATRIX LIQUID CRYSTAL DISPLAY CONTROLLER & DRIVER 点阵液晶显示控制器与驱动程序显示控制器驱动
文件：	总10页 (文件大小：560K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

IN44780 [INTEGRAL]

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