ST
Sitronix
1. Introduction
ST7712
262K Color
Single-Chip TFT Controller/Driver
The ST7712 is a single-chip which generates 396 Source lines and 132 gate lines controller/driver for 262K color TFT dot
graphic display. ST7712 support 18-bit high-speed bus interface and Serial Peripheral Interface (SPI), thus it can perform
bi-operation functions, data transfer, and high-speed RAM write function.
Display data can be stored in an on-chip display
data RAM of 132x396x6 bits. It can perform display data RAM read/write operation without external
operating clock to
minimize power consumption. In addition, because it contains power supply circuits necessary to drive liquid crystal, it is
possible to make a display system with the fewest components.
2. Features
Driver Output Circuits
−396
source output
−132
gate output
On-chip Low Power Analog Circuit
−On-chip
oscillator circuit
−Voltage
converter generating liquid crystal driver up to
6-time scale
−Simultaneous
availability of 262K color with
γ-correction
function
On-chip Display Data RAM
−Capacity:
396
×
132
×
6 =313,632bits
−65K
colors (RGB)= (565) mode
−262K
colors (RGB)= (666) mode
Operating Voltage Range
−Vcc:
2.4~3.3V (logic power supply)
−Vci:
2.5~3.3V (analog power supply)
−IOVcc:
1.8~3.3V (interface power supply)
−Source
line voltage: DDVDH=4.5~6.0V
Applicable Duty Ratios
- Various partial display
- Partial window moving & data scrolling
Microprocessor Interface
−8/9/16/18-bit
parallel bi-directional interface with
−6800-series
or 8080-series
−4-line
serial interface
−3-line
serial interface
Package Type
−Application
for COG
ST7712
6800 , 8080 ,4-Line , 3-Line interface
Ver 2.2
1/113
2006/07/07
SITRONIX [ SITRONIX TECHNOLOGY CO., LTD. ]
