ST7735_V1.8.pdf
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ST
Sitronix
ST7735
262K Color Single-Chip TFT Controller/Driver
V1.8 1 2009-12-04
1 Introduction
The ST7735 is a single-chip controller/driver for 262K-color, graphic type TFT-LCD. It consists of 396 source line and 162
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 162 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
On-chip Display Data RAM (i.e. Frame Memory)
-132 (H) x RGB x 162 (V) bits
LCD Driver Output Circuits:
-Source Outputs: 132 RGB channels
-Gate Outputs: 162 channels
-Common electrode output
Display Resolution
-132 (RGB) x 162
(GM[2:0]= ”000”, DDRAM: 132 x 18-bits x 162)
-128 (RGB) x 160
(GM[2:0]= ”011”, DDRAM: 128 x 18-bits x 160)
Display Colors (Color Mode)
-Full Color: 262K, RGB=(666) max., Idle Mode OFF
-Color Reduce: 8-color, RGB=(111), Idle Mode ON
Programmable Pixel Color Format (Color Depth) for
Various Display Data input Format
-12-bit/pixel: RGB=(444) using the 384k-bit frame
memory and LUT
-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
(8-bit, 9-bit, 16-bit & 18-bit)
-3-line serial interface
-4-line serial interface
Display Features
-Programmable partial display duty
-Line inversion, frame inversion
-Support both normal-black & normal-white LC
-Software programmable color depth mode
Built-in Circuits
-DC/DC converter
-Adjustable VCOM generation
-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
-Timing controller
Built-in NV Memory for LCD Initial Register Setting
-7-bits for ID2
-8-bits for ID3
-7-bits for VCOM adjustment
Wide Supply Voltage Range
-I/O Voltage (VDDI to DGND): 1.65V~VDD
(VDDI ≤ VDD)
-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):
+10.0V to +15V
-Gate driver LOW level (VGL to AGND):
-12.4V to -7.5V
Operating Temperature: -30°C to +85°C
ST7735
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.
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