ST7715 Datasheet, PDF (1/167 Pages) Sitronix Technology Co., Ltd. – 262K Color Single-Chip TFT Controller/Driver

ST
Sitronix
ST7715
262K Color Single-Chip TFT Controller/Driver
1 Introduction
The ST7715 is a single-chip controller/driver for 262K-color, graphic type TFT-LCD. It consists of 396 source line and 132
gate line driving circuits. This chip is capable of connecting directly to an external microprocessor, and accepts Serial
Peripheral Interface (SPI), 8-bit/9-bit/16-bit/18-bit parallel interface. Display data can be stored in the on-chip display data
RAM of 132 x 132 x 18 bits. It can perform display data RAM read/write operation with no external operation clock to
minimize power consumption. In addition, because of the integrated power supply circuits necessary to drive liquid crystal,
it is possible to make a display system with fewer components.
2 Features
Single chip TFT-LCD Controller/Driver with RAM
Built-in Circuits
On-chip Display Data RAM (i.e. Frame Memory)
- DC/DC converter
- 132 (H) x RGB x 132 (V) bits
LCD Driver Output Circuits:
- Source Outputs: 132 RGB channels
- Gate Outputs: 132 channels
Display Resolution
- 132 (RGB) x 132
- Adjustable VCOM
- Non-volatile (NV) memory to store initial register setting
- Oscillator for display clock generation
- Factory default value (module ID, module version, etc)
are stored in NV memory
(GM[2:0]= ”001”, DDRAM: 132 x 18-bits x 132)
Display Colors (Color Mode)
- Full Color: 262K, RGB=(666) max., Idle Mode OFF
- Timing controller
Built-in NV Memory for LCD Initial Register Setting
- 7-bits for ID2
- Color Reduce: 8-color, RGB=(111), Idle Mode ON
- 8-bits for ID3
Programmable Pixel Color Format (Color Depth) for
- 7-bits for VCOM adjustment
Various Display Data input Format
Wide Supply Voltage Range
- 12-bit/pixel: RGB=(444) using the 384k-bit frame
- I/O Voltage (VDDI to DGND): 1.65V~VDD
memory and LUT
(VDDI ≤ VDD)
- 16-bit/pixel: RGB=(565) using the 384k-bit frame
memory and LUT
- 18-bit/pixel: RGB=(666) using the 384k-bit frame
memory and LUT
Various Interfaces
- Parallel 8080-series MCU Interface
- Analog Voltage (VDD to AGND): 2.6V~3.3V
On-Chip Power System
- Source Voltage (GVDD to AGND): 3.0V~5.0V
- VCOM HIGH level (VCOMH to AGND): 2.5V to 5.0V
- VCOM LOW level (VCOML to AGND): -2.4V to 0.0V
- Gate driver HIGH level (VGH to AGND):
(8-bit, 9-bit, 16-bit & 18-bit)
+10.0V to 15V
- 3-line serial interface
- Gate driver LOW level (VGL to AGND):
- 4-line serial interface
Display Features
- Programmable partial display duty
-12.4V to –7.5V
Operating Temperature: -30°C to +85°C
- Line inversion, frame inversion
- Support both normal-black & normal-white LC
- Software programmable color depth mode
ST7715
Parallel Interface: 8-bit/9-bit/16-bit/18-bit
Serial Interface: 3-line/4-line
Sitronix Technology Corp. reserves the right to change the contents in this document without prior notice.
V1.5
1
2009-12-04