1. Introduction

ST7773 is a single-chip controller/driver for 262K-color, graphic type TFT-LCD. It consists of 528 source line and 220 gate line driver circuits. This chip can be connected to a microprocessor direct through Serial Peripheral Interface (SPI) or 8-bits/9-bits/16-bits/18-bits parallel interface. The display data is stored in the on-chip Display Data RAM (DDRAM) of 176x220x18 bits.

2. Features

Single chip TFT-LCD Controller/Driver with RAM

On-chip Display Data RAM (i.e. Frame Memory)

- 176 x 220 x 18 = 696,960 bits

LCD Driver Output Circuits:

- Source Outputs: 176 RGB channels

- Gate Outputs: 220 channels

Display Resolution

- 176 (RGB) x 220

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 whole frame memory

- 16-bit/pixel: RGB=(565) using whole frame memory

- 18-bit/pixel: RGB=(666) using whole frame memory

Various Interfaces

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

- 3-line serial interface

Display Features

- Programmable partial display duty

- Line inversion, frame inversion

- Supporting MVA type LC

- Support both normal-black & normal-white LC