ST7546T Datasheet, PDF (1/48 Pages) Sitronix Technology Co., Ltd. – 66 x 102 Dot Matrix LCD Controller/Driver

ST
Sitronix
ST7546T
1. INTRODUCTION
66 x 102 Dot Matrix LCD Controller/Driver
The ST7546T is a driver & controller LSI for graphic dot-matrix liquid crystal display systems. It contains 102 segment
and 65 common with 1 ICON driver circuits. This chip is connected directly to a microprocessor, accepts 8-bit parallel
interface、3-line or 4-line serial peripheral interface (SPI)、I²C interface, display data can stores in an on-chip display
data RAM of 66 x 102 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
- Oscillator requires no external components
Driver Output Circuits
(external clock also possible)
102 segment / 65 common + 1 ICON
- Voltage converter (x4, x5)
On-chip Display Data ram
- Capacity: 66X102=6,732 bits
- Voltage regulator(temperature gradient
-0.11%/°C)
Microprocessor Interface
- Voltage follower
- 8-bit parallel bi-directional interface with
- On-chip electronic contrast control function (255
6800-series or 8080-series
steps)
- 4-line SPI (serial peripheral interface) available
External RESB (reset) pin
(only write operation)
Logic supply voltage range VDD1,2 -VSS
- 3-line SPI (serial peripheral interface) available
- I²C (Inter-Integrated Circuit) Interface
- VDD1 -VSS : 1.7 to 3.3V
- VDD2 -VSS : 2.4 to 3.3V
On-chip Low Power Analog Circuit
Display supply voltage range VLCD -VSS
- Generation of LCD supply voltage (externally
- 4.5 to 13.5V
Vout voltage supply is possible)
Temperature range: -40 to +85 degree
- Generation of intermediate LCD bias voltages
ST7546T-G2
ST7546Ti-G2
6800 , 8080 ,
4-Line , 3-Line interface
(without I²C interface)
I²C interface
Ver 1.2
1/48
2006/01/26