262K Color Single-Chip TFT Controller/Driver
V1.6 1 2012-10-31
1 Introduction
The ST7735R 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 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)
Parallel 6800-series MCU Interface
(8-bit, 9-bit, 16-bit & 18-bit)
3-line serial interface
4-line serial interface
Display Features
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~3.7V (VDDI ≤ VDD)
Analog Voltage (VDD to AGND): 2.3V~4.8V
On-Chip Power System
Source Voltage (GVDD to AGND): 3.15V~4.7V
VCOM level (VCOM to AGND): -0.425V to -2.0V
Gate driver HIGH level (VGH to AGND): +10.0V to +15V
Gate driver LOW level (VGL to AGND): -13V to -7.5V
Operating Temperature: -30°C to +85°C
ST7735R_V1.6 Specification Download PDF-LCD manufacturers
