ST7921 Datasheet | Sitronix Technology

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) Input/Output signals Input : Serial display data and control pulse from controller IC Output : 48 X 2 channels waveform for LCD driving 96CH Segment Driver For Dot Matrix LCD 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. The ST7921 can convert serial data received from an LCD controller, such as ST7920, into parallel data and send out LCD driving waveforms to the LCD panel. The ST7921 is designed for general purpose LCD drivers. It can drive both static and dynamic drive LCD. The LSI can be used as segment driver. .. Ver 1.6 1/11 2005/05/24 ST7921 Functional Block S1 S48 S49 S96 V1 V2 V3 V4 SEGMENT DRIVER SEGMENT DRIVER VDD VSS V0 DATA LATCH(48bits) DATA LATCH(48bits) BIDIRECTIONAL SHIFTER(48bits) BIDIRECTIONAL SHIFTER(48bits) M CL1 CL2 CONTOL DL1 SHL1 DR1 DL2 SHL2 DR2 .. Ver 1.6 2/11 2005/05/24 Pin Description : Pin Name VDD VSS Purpose POWER GROUND Description for logic for logic I/O N/A...