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S6A0090

64 SEG / 26 COM DRIVER & CONTROLLER FOR STN LCD

Samsung 

64 SEG / 26 COM DRIVER & CONTROLLER FOR STN LCD

BLOCK DIAGRAM

S6A0090

RES

PS

IF

CSB

RS

E

DB7

(SI)

DB6

(SCL)

DB5~

DB4

DB3~

DB0

VDD

GND

(VSS)

CK

Oscillator

Timing Generator

Parallel

8

Instruction

Register

(IR)

Interface

Instruction

Decoder

4-bit/8-bit

Serial

Interface

8

Input Buffer

Address

Counter

7

Display

Data RAM

(DDRAM)

36x8 bits

Data

Register

(DR)

8

8

87

88

26 bits

Shift

Register

64 bits

Shift

Register

64 bits

Latch

Circuit

Static COMSA

Driver SEGSA~E

COM1~

Common COM24

Driver

COM S1

COM S2

SEG1~

Segment SEG60

Driver

SEGS1,2

4,5

Icon RAM

(ICONRAM)

224 bits

Character

Generator

RAM

(CGRAM)

32 bytes

Character

Generator

ROM

(CGROM)

10240 bits

Cursor &

Blink

Controller

5

5

LCD

Driver

Voltage

Selector

Segment Data Conversion

Voltage Converter

LCD Driving Power Circuit

Voltage Regulator

Voltage Follower &

Bias Resistor

CAP1+ CAP1- CAP2+ CAP2- VOUT

V0 VR

V0 V1 V2 V3 V4

BID

Figure 1. Block Diagram

3

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