Sitronix ST7920 LCD Controller Datasheet

About this manual

The ST7920 is a dot-matrix LCD controller and driver integrated circuit designed to display alphanumeric characters, symbols, and custom graphics. It supports three control interfaces: 8-bit microprocessor interface, 4-bit microprocessor interface, and serial interface. The device integrates all necessary functions including Display Data RAM (DDRAM), Character Generator ROM/RAM (CGROM/CGRAM), and LCD driver circuits into a single chip. This manual is written in Chinese.

What's inside

• 主要特色
• 功能描述
• 系统方块图
• Pad脚位排列图
• 打线座标说明
• PAD脚功能描述
• 振荡电阻与耗电流关系曲线

Specifications

Frequently asked questions

What are the supported control interfaces for the ST7920?

The ST7920 supports 8-bit microprocessor interface, 4-bit microprocessor interface, and serial interface.

What is the operating voltage range for the ST7920?

The device operates with a power supply between 2.7 V and 5.5 V.

What is the maximum voltage for the LCD display?

The VLCD (V0~ V ss) can reach a maximum of 7 V.

How many common and segment lines does the LCD driver have?

The driver consists of 33 commons and 64 segments.