GENERAL DESCRIPTION

The ST7789VI is a single-chip controller/driver for 262K-color, graphic type TFT-LCD. It consists of 720

source line and 320 gate line driving circuits. This chip is capable of connecting directly to an external

microprocessor, and accepts, 8-bits/9-bits/16-bits/18-bits parallel interface. Display data can be stored in the

on-chip display data RAM of 240x320x18 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

circuit necessary to drive liquid crystal; it is possible to make a display system with the fewest components.

FEATURES

Single chip TFT-LCD Controller/Driver with On-chip Frame Memory (FM)

Display Resolution: 240*RGB (H) *320(V)

Frame Memory Size: 240 x 320 x 18-bit = 1,382,400 bits

LCD Driver Output Circuits

- Source Outputs: 240 RGB Channels

- Gate Outputs: 320 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)

- 16-bit/pixel: RGB=(565)

- 18-bit/pixel: RGB=(666)

MCU Interface

- Parallel 8080-series MCU Interface (8-bit, 9-bit, 16-bit & 18-bit)

- 6/16/18 RGB Interface(VSYNC, HSYNC, DOTCLK, ENABLE, DB[17:0])

- Serial Peripheral Interface(SPI Interface)

- VSYNC Interface

Display Features

- Programmable Partial Display Duty

- CABC for saving current consumption

- Color enhancement

On Chip Build-In Circuits

- DC/DC Converter

- Adjustable VCOM Generation

- Non-Volatile (NV) Memory to Store Initial Register Setting and Factory Default Value (Module ID,

Module Version, etc)

- Timing Controller

- 4 preset Gamma curve with separated RGB Gamma setting

Build-In NV Memory for LCD Initial Register Setting

- 8-bits for ID1 setting

- 8-bits for ID2 setting

- 8-bits for ID3 setting

- 6-bits for VCOM Offset adjustment

Driving Algorithm

- Dot Inversion

- Column Inversion

Wide Supply Voltage Range

- I/O Voltage (VDDI to DGND): 1.65V ~ 3.6V (VDDI VDD ≦ )

- Analog Voltage (VDD to AGND): 2.4V ~ 3.6V

On-Chip Power System

- Source Voltage (VAP (GVDD) to VAN (GVCL)): +6.4~-4.6V

- VCOM level: GND

- Gate driver HIGH level (VGH to AGND): +12.2V ~ +14.97V

- Gate driver LOW level (VGL to AGND): -12.5V ~ -7.16V

- Adjustable voltage range for feed through compensation: 0.1V~1.675V

Optimized layout for COG Assembly

Operate temperature range: −40℃ to +85℃

Lower Power Consumption