ST7577 Datasheet, PDF (1/48 Pages) Sitronix Technology Co., Ltd. – 132 x 39 Dot Matrix LCD Controller/Driver

ST
Sitronix
ST7577
132 x 39 Dot Matrix LCD Controller/Driver
1. INTRODUCTION
ST7577 is a driver & controller LSI for graphic dot-matrix liquid crystal display systems. ST7577 contains 132 segment and
39 common driver circuits. This chip is connected directly to a microprocessor, accepts 3-line, 4-line serial peripheral
interface (SPI) or 8-bit parallel interface, display data can stores in an on-chip Display Data RAM (DDRAM) of 132 x 39 bits.
It performs Display Data RAM read/write operation with no external operating clock to minimize power consumption. In
addition, because it contains power supply circuits to drive liquid crystal, it is possible to make a display system with the
fewest components.
2. FEATURES
Single-chip LCD controller & driver
Driver Output Circuits
l 132 segments / 39 commons (DTY=”L”)
l 132 segments / 12 commons (DTY=”H”)
On-chip Display Data RAM (DDRAM)
l Capacity: 132X39=5148 bits
Microprocessor Interface
l 8-bit parallel bi-directional interface with 6800-series
or 8080-series
l 4-line SPI (serial peripheral interface) available (only
write operation)
l 3-line SPI (serial peripheral interface) available
On-chip Low Power Analog Circuit
l Embedded Boosters with voltage regulation function
that generates high-accuracy voltage (externally V0I
/ XV0I voltage supply is also supported).
l Voltage regulation temperature gradient -0.07%/°C
l Programmable Booster stages: X3,X4.
l On-chip electronic contrast control function
l Built-in Voltage Follower generates LCD bias
voltages (1/4 to 1/7).
Built-in oscillator
l Built-in oscillator requires no external components
(external clock input is also supported)
External RESB (reset) pin
Supply voltage range
l VDD - VSS (Digital): 2.4 to 3.3V (typical);
l VDD2 - VSS (Analog): 2.4 to 3.3V (typical).
Display supply voltage (V0-VSS) range: 3.0V~8.31V
Temperature range: -30 to +85 degree
Support LCD Module Size up to 1.4”
ST7577
6800 , 8080 , 4-Line , 3-Line interface
Ver 1.0a
1/48
2008/02/14