MSM6794 Просмотр технического описания (PDF) - Oki Electric Industry

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MSM6794

DOT MATRIX LCD DRIVER WITH 128-CHANNEL RAM

Oki Electric Industry 

¡ Semiconductor

BLOCK DIAGRAM

SEG1

COM48

SEG128 COM1

MSM6794

LCD drive power supply

V1, V3, V4, V6

2

VIN

VC1

VC2

Voltage

VS1

multiplier

VS2

circuit

DT

Segment driver

Level shifter

Data latch

RAM

128 × 48 bit

display memory

LCD drive power supply

V1, V2, V5, V6

2

6 Common

6

counter

Y address

6 counter

VDD1 to VDD4

VSS1 to VSS3

DF

LCDCK

FLM

M/S

RESET

CO

OSC1

OSC2

OSC3

TEST1

TEST2

SI

X decoder

5

2

X address

counter

8

Timing

generator

Clock

frequency

divider

circuit

MPX

BUSY

Memory input

/output buffer

8

8

8-, 6-bit conversion circuit

5 X address

register

6 Y address

register

Control

register

7

7

Address

register

8

MPX

MPX

8-bit Serial register

SO

P/S

I/O control

SHT CS WR RD RS

Input/output buffer

DB7 to DB0

2/34

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