General Description :

ST7921 is a segment driver for dot matrix type LCD display. It features 96 channels with 48 X 2 bits bi-directional shift registers, data latches, LCD drivers and logic control circuits. It is fabricated by high voltage CMOS process with low current consumption.

Features :

Display driving bias : static to 1/5

Power supply for logic : 2.7V ~ 5.5V

Power supply for LCD voltage (V0~VSS) : 3V ~ 7V

Dot matrix LCD driver with two 48 channel outputs

Bias voltage (V0 ~ V4)

nput/Output signals

Input : Serial display data and control pulse from controller IC

Output : 48 X 2 channels waveform for LCD driving