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 (2/2)

ML9090A-02

COM1

COM18 SEG1

SEG80

VIN

VC1

VC2

VOLTAGE

DOUBLER/

VS1

TRIPLER

VS2

DT

18-OUT

COMMON DRIVER

80-OUT SEGMENT DRIVER

SHIFT REGISTER

DATA LATCH

V2

LCD BIAS

VOLTAGE

V3B

DIVIDING

CIRCUIT

V3A

DISPLAY DATA RAM

80 × 18 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

3/41

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