KS0072 データシートの表示（PDF） - Samsung

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KS0072

DOT MATRIX LCD CONTROLLER & DRIVER

Samsung 

KS0072

PIN DESCRIPTION

PRELIMINARY SPECIFICATION

DOT MATRIX LCD CONTROLLER & DRIVER

Pin

VDD

VSS(GND)

V2, V3, V5

S1 ~ S40

C1 ~ C16

Input/Output

Name

P

Power supply &

LCD Bias pin

Output

Output

Segment output

Common output

EXTCLK Input

External clock

Input

EXT_INT Input

RS

Input

External/Internal

oscillator clock

select

Register select

R/W

Input

Read/Write

E

Input

DB0 ~ DB3 Input/Output

Read/Write

enable

Data Bus 0 ~ 7

DB4 ~ DB7

RESETB Input

TEST

Output

Reset

Test Pin

Description

for logical circuit (+3v, +5v)

0V (GND)

Bias voltage level for LCD driving

Segment signal output for LCD driving

Common signal output for LCD driving

When using external clock, used as

clock input pin. When using internal

oscillator, connect to VDD or VSS.

When EXT_INT = “High”, external clock

is used. When “Low”, internal oscillator is

used.

Used as register selection input. When

RS= “High”, Data register is selected.

When RS= “Low”, Instruction register is

selected.

Used as read/write selection input. When

RW=“High”,read operation. When

RW=“Low”, write operation.

Used as read/write enable signal.

When 8-bit bus mode, used as low order

bidirectional data bus.

During 4-bit bus mode open these pins.

When 8-bit bus mode, used as high order

bidirectional data bus. IN case of 4-bit

bus mode, used as both high and low

order.

DB7 is used for Busy Flag output during

read instruction operation.

If it is necessary to initialize the system

by hardware, force “Low”, level signal to

this terminal about 1.2 mS.

Internal oscillator test pin.

Openthis pin.

Interface

Power

Supply

LCD

LCD

External

clock

MPU

MPU

LDI-97-D001

5

97-10-23

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