Seiko Instruments G1216B1N000-3D0E

AN.No.G1216B1N000-3D0E

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2. CIRCUIT CONFIGURATION

2.1 Block Diagram

This product consists of two HD61202 segment drivers, an HD61203 comm on driver and a bias

voltage generator. Figure 2 shows the block diagram.

CS2

RST, R/W, D / I, E

DB0 to DB7

VDD

CS1

VSS

64 128 64 full dot matrix LCD

Segment Driver 1

VLC Va, Vc, Vd, Vf

VfSegment Driver 2

Common Driver

Bias Voltage

Generator

FRM

CL2

LED Backlight

LEDA

LEDC

64 64

2.2 Segment Drivers (HD61202)

The segment driver is a 64 drive output CMOS IC. The G1216 is driven wit h the panel d ivided into

two right and left displays. A segment driver controls the divided screen. 8 bits of data tr ansmitted

from the MPU are saved in the internal display RAM, and the segment signal is gener ate d to drive the

LC. 1 bit of display RAM data corresponds to 1 dot lighting or non-lighti ng on the LC panel.

ure 2 Block Dia

ram