This document is the user manual for the Qingyun Innovation 12864 dot matrix LCD intelligent display terminal. The terminal is an intelligent display terminal module with 8192 16*16 dot Chinese character fonts and 128 16*8 half-width letter symbol fonts. It can display characters, perform movement operations, and show graphics by sending commands through a serial interface. The terminal has the advantage of saving development time.
The Qingyun QDM12864A-01 is a 128×64 dot‑matrix LCD intelligent display terminal that integrates the display controller and font ROM, allowing users to send serial commands for text and graphics without designing custom hardware. It simplifies development by providing built‑in fonts (8192 Chinese characters and 128 alphanumeric) and a ready‑to‑use command set.
The document covers product introduction, physical dimensions and connector definitions, rated electrical parameters, and the serial communication protocol (UART RS‑232/TTL). It also lists command codes for screen control, backlight adjustment, and baud‑rate configuration. This manual is written in Chinese.
| Display resolution | 128×64 dot matrix STN LCD |
|---|---|
| Power supply voltage | DC12V (allowed range DC9‑16V) |
| Rated current | 100 mA at 12 V with backlight on, 18 mA with backlight off |
| Backlight type | LED backlight with continuously adjustable brightness |
| Operating temperature range | -20 °C to 70 °C |
The LCD screen can show four lines, each line displaying eight Chinese characters.
Send command 0x5F to turn on the backlight and 0x5E to turn it off; brightness can be adjusted with command 0xEE followed by a value 1‑255.