ST Sitronix ST7920 Dot Matrix LCD Controller/Driver is a display controller chip that can display letters, numbers, Chinese characters and custom block displays. It supports 8-bit, 4-bit and serial interfaces, and has built-in character ROM, font generator, liquid crystal driver circuit and controller, and only requires the smallest microprocessor system to operate.
The ST7920 is a dot matrix LCD controller/driver capable of displaying alphanumeric characters, Chinese characters, and custom graphics. It integrates a character generator, graphics RAM, and LCD drive circuitry into a single chip, supporting 8-bit, 4-bit, and serial MPU interfaces. The device includes built-in character ROMs for Big-5 and GB Chinese character sets, as well as half-width symbol fonts. This manual is written in Chinese.
| Power Supply Voltage | 2.7 to 5.5V |
|---|---|
| Character Display RAM | 64 x 16-bit |
| Graphics Display RAM | 64 x 256-bit |
| LCD Driver Configuration | 33-common x 64-segment |
| Normal Mode Current | 450uA Typ (VDD=5V) |
| Sleep Mode Current | 3uA Max (VDD=5V) |
It provides 8-bit, 4-bit, and serial MPU interfaces.
Yes, it can be expanded to 2 lines of 16 characters using the ST7921 segment driver.