Chinese user manual for the Qingyun Innovation LCM1602C character LCD module, covering specifications, wiring, commands and handling precautions.
The Qingyun Innovation LCM1602C is a character LCD module with a 5 × 7 dot matrix and optional yellow‑green or white backlight. The manual provides physical dimensions, electrical and optoelectronic parameters, pin definitions, and detailed read/write timing diagrams.
It also includes instructions for power connection, contrast adjustment via the VO pin, command set usage, application circuit examples, and safety/handling guidelines for reliable operation in the specified temperature and humidity ranges. This manual is written in Chinese.
| Operating Voltage (VDD) | 4.5 V – 5.5 V |
|---|---|
| Input High Voltage (VIH1) | 2.2 V |
| Input Low Voltage (VIL1) | -0.3 V – 0.6 V |
| Display Size | 5 × 7 dots per character |
| Viewing Angle | 6 o’clock |
The module operates from 4.5 V to 5.5 V.
Contrast is adjusted by changing the VO pin voltage.
Store the module at 0 °C – 35 °C with humidity below 70 %.
RS selects instruction (Low) or data (High) mode for the LCD.