IZ44780-01 datasheet(7/10 Pages) INTEGRAL

No de pièce	IZ44780-01

Description	DOT MATRIX LIQUID CRYSTAL DISPLAY CONTROLLER & DRIVER

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Fabricant	INTEGRAL [Integral Corp.]

Site Internet	http://www.iksemi.com/

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7 / 10 page

IN44780U

7

TERMINAL DESCRIPTION

INPUT/OUTPUT

Name

DESCRIPTION

INTERFACE

VDD

Operating Voltage

For logical circuit (+5V

± 10%)

Power

VSS

Power

0V(GND)

Supply

V1 – V5

Negative Supply

Voltage

Bias voltage level for LCD driving

SEG1–

SEG40

Output

Segment output

Segment signal output for LCD driving

LCD

COM1–

COM16

Output

Common output

Common signal output for LCD driving

LCD

OSC1

OSC2

Input

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

CLK1

Data latch clock

Clock output terminal for the serially

transferred data to be latched to the

driver.

CLK2

Output

Data shift clock

Clock output terminal used when D

terminal data output shifts the inside of

the driver.

HD44100,

KS0065,

IZ0065

M

Alternated signal

for LCD driver

output

The alternating signal to convert LCD

drive waveform to AC.

D

Display data

interface

Character pattern data, which is

corresponding to each common signal,

is supplied to driver serially.

High

Selection

Low

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

Read mode

Low

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 (DB7 can be

used as a busy flag)

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IZ44780-01 Fiches technique(PDF) 7 Page - Integral Corp.

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