IN44780U_技术文档

IN44780U

DOT MATRIX LIQUID CRYSTAL DISPLAY CONTROLLER &

DRIVER

FEATURES

FUNCTION

• Internal Memory

• Character type dot matrix LCD driver & controller

-

Character Generator ROM: 8320 bits

Character Generator RAM: 512 bit

Display Data RAM: 80 x 8 bits for 80 digits

• Internal driver: 16 common and 40 segment signal

output

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

5 x 10 dots + cursor

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

• Display character pattern:

• Internal automatic reset circuit at power ON

• Internal oscillation circuit

• 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

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

• Wide range of instruction function:

SED1278

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

shift

Cursor ON/OFF, Display character blink, Cursor shift

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

IZ44780 – 01

IZ44780 – XX

English

Russian

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

- 0.3 ~ 7.0

V

V_DD- 13.5 ~ V_DD+ 0.3

-0.3 ~V_DD+ 0.3

- 20 ~ + 75

V

T_a

^oC

T_stg

- 55 ~ + 125

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

1

IN44780U

BLOCK DIAGRAM

V1

Power

Parallel/ Serial

Data conversion

Circuit

supply

for

V2

V3

V4

V5

LCD

Drive

5

Busy

Flag

Cursor

Blink

Char acter

Generator

RAM

Character

Generator

ROM

Control

Circuit

512 bits

8320 bits

DB

0

~DB

3

4

DB4

~DB

7

8

SEG1

to

8

Data

I/ O

Segment

Sign al

40 - bit

Shift

40 - bit

Latch

SEG40

Register

Buffer

40

8

Driver

Register

Circuit

7

R/ W

RS

Display

E

7

8

Data RAM

80 x 8 bits

D

Instruction

Register

Instruction

Decoder

8

7

Address

Counter

COM1

to

16 - bit

Shif t

Common

Sign al

COM16

16

7

Register

Driver

OSC1

OSC2

CLK1

Timing

Generation

Circuit

CLK2

M

V

DD

SS

2

IN44780U

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

HIGH Output Voltage

LOW Output Voltage

V_IH

E, DB₀~ DB₇,

R/W, RS

2.2

V_DD

V

OSC1

V_DD-1.0

-0.3

V_DD

0.6

V_IL

E, DB₀~ DB₇,

R/W, RS

OSC1

-0.2

2.4

1.0

V_OH

V_OL

V_COM

I_OH= -0.205 mA

I_OH= -40µA

DB₀~ DB₇

CLK1, CLK2, M, 0.9V_DD

D

I_OL= 1.2mA

_OL= 40µA

DB₀~ DB₇

CLK1, CLK2, M,

D

0.4

0.1V_DD

I

Driver Voltage

Descending

COM1 ~ COM16

1.0

I_O= ± 0.1mA

V_SEG

I_LKG

SEG1 ~ SEG40

1.0

1

Input Leakage

Current

Input LOW Current

V_IN=0V ~ V_DD

E

-1

-50

125

46

µA

I_IL

V_CC= 5V (test pull

up R)

RS, R/W,

-125

250

50

-250

350

DB₀~ DB₇

Frequency

(*1)

f_EC

KHz

External Duty

DUTY

t_R

t_F

f_OSC1

OSC1

55

0.2

350

%

µs

Clock

Rise time

Fall time

µs

Internal Clock

Frequency(*1)

Ceramic Resonator

Oscillation Frequency

(*1)

OSC1, OSC2

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

V₁~ V₅

4.6

3.0

10.0

V

Notes: *1). Oscillation circuit

3

IN44780U

Resistor circuit

External clock circuit

OSC1

OSC2

OSC1

OSC2

Rf

open

Rf: 91k

Ω

+2%

Frequency input

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

Duty

1/8, 1/11

1/16

1/5

Bias

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

Symbol

Test pin

Min

Typ

Max

Unit

E Cycle Time

E Rise Time

E Fall Time

E Pulse Width (High,

Low)

t_C

t_R

t_F

E

500

ns

25

t_W

220

R/W and RS Set-up Time

R/W and RS Hold Time

Data Set-up Time

t_SU1

t_H1

t_SU2

t_H2

R/W, RS

DB₀~ DB₇

40

10

60

10

ns

Data Hold Time

4

IN44780U

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

E Rise Time

E Fall Time

Symbol

Test pin

Min

Typ

Max

Unit

t_C

t_R

t_F

E

500

ns

25

E Pulse Width (High,

Low)

t_W

220

R/W and RS Set-up Time

R/W and RS Hold Time

Data Output Delay Time

Data Hold Time

t_SU1

t_H1

t_D

R/W, RS

DB₀~ DB₇

40

10

ns

120

t_H2

20

5

IN44780U

V

IH1

IL1

V

IH1

RS

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

Clock Set-up Time

M Delay Time

t_WCKH

t_WCKL

t_SU

t_DH

t_CSU

t_DM

CLK

D

CLK

M

800

300

500

ns

-1000

1000

0.9VDD

0.1VDD

0.9VDD

CLK1

CLK2

t

WCKH

CSU

t

WCKH

0.9VDD

0.1VDD

t

WCK1

t

CSU

0.9V

0.1VD^DD^D

D

t

SU

t

DM

M

0.9VDD

t

DM

6

IN44780U

TERMINAL DESCRIPTION

INPUT/OUTPUT

Name

DESCRIPTION

For logical circuit (+5V ± 10%)

0V(GND)

INTERFACE

Power

V_DD

Operating Voltage

V_SS

Power

Supply

V₁– V₅

Negative Supply

Voltage

Segment output

Bias voltage level for LCD driving

SEG1–

SEG40

COM1–

COM16

OSC1

Output

Input

Segment signal output for LCD driving

LCD

Common output

Oscillator

Common signal output for LCD driving LCD

Both pin connected to Rf resistor or

Resistor or

ceramic resonator for internal oscillator Ceramic

OSC2

CLK1

CLK2

M

Output

circuit. In case of external frequency

use only, the frequency is input to

OSC1 terminal.

Resonator

Data latch clock

Data shift clock

Clock output terminal for the serially

transferred data to be latched to the

driver.

Output

Clock output terminal used when D

HD44100,

terminal data output shifts the inside of KS0065,

the driver.

IZ0065

Alternated signal

for LCD driver

output

Display data

interface

The alternating signal to convert LCD

drive waveform to AC.

D

Character pattern data, which is

corresponding to each common signal,

is supplied to driver serially.

High

Low

Selection

Non selection

E

Input

Enable

Start anable signal to read or write the

data

MPU

R/W

Read/Write

R/W signal input is used to select the

read/write mode

High

Low

Read mode

Write mode

RS

Register select

Data interface

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

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

IN44780U

CONTROL and DISPLAY COMMANDS

Remark

Command

RS R/W DB₇DB₆DB₅DB₄DB₃DB₂DB₁DB₀Execution time

(f_OSC=250KHz)

DISPLAY CLEAR

RETURN HOME

ENTRY MODE SET

L

H

L

H

X

1.64 ms

40µs

Cursor move to first digit

H

*I/D: set cursor move

I/D SH

direction

I/D

H

L

Increase

Decrease

*SH: Specifies shift of

display

SH

H

L

Display is

shifted

Display is

not shifted

*Display

DISPLAY ON/OFF

L

H

D

C

B

40µs

D

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

Display shift

Cursor move

L

R/L

DL

H

L

Right shift

Left shift

SET FUNCTION

H

DL

N

F

X

H

8 bits

interface

4 bits

L

interface

N

F

H

L

2 line display

1 line display

H

L

5x10 dots

5x7 dots

CG RAM Data is sent and

SET CG RAM

ADDRESS

L

H

CG RAM address

40µs

received after this setting

(corresponds to cursor

address)

DD RAM Data is sent and

received after this setting

SET DD RAM

ADDRESS

READ BUSY FLAG

& ADDRESS

L

H

40µs

0µs

DD RAM address

BF

H

L

Busy

Ready

H

BF

Address Counter used for

-Reads BF indication

Both DD & CG RAM address

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

IN44780U

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

IN44780U

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

:

µm

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

X

Y

Pad

No.

Pad

X

Y

Pad

No.

Pad

X

Y

Name

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

SEG22

SEG21

SEG20

SEG19

SEG18

SEG17

SEG16

SEG15

SEG14

SEG13

SEG12

SEG11

SEG10

SEG9

SEG8

SEG7

SEG6

SEG5

SEG4

SEG3

SEG2

SEG1

GND

-2221 -1830 28

-2041 -1830 29

-1804 -1830 30

-1624 -1830 31

-1444 -1830 32

-1264 -1830 33

-1084 -1830 34

-904 -1830 35

-724 -1830 36

-544 -1830 37

-364 -1830 38

-184 -1830 39

-4 -1830 40

V3

2299 -1012 55

COM9

-530

-710

1830

1404

1224

1044

864

V4

2299

2188

2008

1812

1632

1436

1256

961

-832 56

-862 57

-472 58

-292 59

-112 60

68 61

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

V5

-941

CL1

CL2

V_CC

-1121

-1301

-1481

-1661

-1841

-2036

-2216

-2298

M

D

248 62

RS

428 63

R/W

E

608 64

788 65

DB0

DB1

DB2

DB3

DB4

DB5

DB6

DB7

COM1

COM2

COM3

COM4

COM5

COM6

COM7

COM8

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

176 -1830 41

35 -1830 42

684

536 -1830 43

716 -1830 44

896 -1830 45

1076 -1830 46

1256 -1830 47

1436 -1830 48

1616 -1830 49

1920 -1830 50

2100 -1830 51

2299 -1552 52

2299 -1372 53

2299 -1192 54

504

324

144

-36

-216

-396

-576

-756

-936

781

601

421

OSC1

OSC2

V1

241

61

-2298 -1116

-2298 -1296

-119

-299

V2

10


型号：	IN44780U
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：192K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

IN44780U [INTEGRAL]

相关型号：

IN4587

IN4587R

IN4588

IN4588R

IN4589

IN4589R

IN4590

IN4590R

IN4591

IN4591R

IN4592

IN4592R