PRELIMINARY SPECIFICATION

64COM/128SEG DRIVE FOR DOT MATRIX LCD

KS0708

17

M/M-96-D001

97-09-19

Instructions

¡á Read Display Data

Reads 8-bit data display data RAM area specified by column address and page address. As the column

address is incremented by 1 automatically after each read operation, the microprocessor can continue to

read data of multiple words.

RS

RW

DB7

DB6

DB5

DB4

DB3

DB2

DB1

DB0

1

1

Read data

¡á Write Display Data

Writes 8-bit data in display data RAM. As the column address is incremented by 1 automatically after each

write operation, the microprocessor can continue to write data of multiple words.

RS

RW

DB7

DB6

DB5

DB4

DB3

DB2

DB1

DB0

1

0

Write data

¡á Read Status

Indicates the internal status conditions of the device to the microprocessor.

RS

RW

DB7

DB6

DB5

DB4

DB3

DB2

DB1

DB0

0

1

BUSY

0

ON/OFF

RESET

0

0

0

0

Flag

Description

BUSY

The device is busy due to internal operation or reset. Any instruction is rejected

until BUSY goes Low.

ON/OFF

Indicates whether the display is on or off. When goes Low, the display is on. When goes

High, the display is off. This is the opposite of Display ON/OFF instruction.

RESET

Indicates the initialization is in progress by RESETB signal. When Low, the chip is in

active. When High, the chip is being reset.