ML9090A View Datasheet(PDF) - Oki Electric Industry

Part Name

Description

Manufacturer

ML9090A

LCD Driver with Key Scanner and RAM

Oki Electric Industry 

1Semiconductor

FEDL9090A-01

ML9090A-01, -02

BLOCK DIAGRAM (1/2)

ML9090A-01

COM1 COM10 PB0 PB7 SEG1

SEG80

VIN

VC1

VC2

VS1

VS2

DT

VOLTAGE

DOUBLER/

TRIPLER

10-OUT

COMMON

DRIVER

8-PORT

DRIVER

80-OUT SEGMENT DRIVER

SHIFT

REGISTER

DATA LATCH

LCD BIAS

V2

VOLTAGE

V3B

DIVIDING

V3A

CIRCUIT

DISPLAY DATA RAM

80 × 10 BITS

CS

CP

DI/O

OSC1

OSC2

OSCILLATION

CIRCUIT

I/O

BUFFER

X ADDRESS DECODER

TIMING

GENERATOR

X ADDRESS COUNTER

X ADDRESS REGISTER

RESET

TEST

VDD

VSS

1 PORT

DRIVER

PA0

5 × 5 KEY SCANNER

C0 C1 C2 C3 C4

R0 R1 R2 R3 R4 KREQ

2/41

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