The Qingyun LCM12864H graphics LCD module manual provides physical data, pin connections, electrical characteristics, and operation instructions.
This manual describes the Qingyun LCM12864H graphics lattice LCD module. It includes physical specifications such as display mode, dimensions, and viewing angle, as well as the pin‑out diagram and connection details.
The document also covers electrical limits, typical operating currents, and step‑by‑step operating principles, command sets, and initialization procedures for the module. This manual is written in Chinese.
| Display mode | STN (yellow‑green) |
|---|---|
| LCD duty | 1/64 |
| LCD bias | 1/9 |
| Resolution | 128 × 64 dot |
| Module dimensions (W×H×T) | 92.0 × 57.0 × 11.0 mm |
| Supply voltage for logic (VDD) | 2.4 – 3.5 V |
| Supply current for logic (IDD) | 0.2 – 0.4 mA |
| Supply voltage for side light (V_B) | 3.0 – 3.3 V |
| Operating temperature range | -20 °C to 70 °C |
The module operates with a logic supply voltage (VDD) between 2.4 V and 3.5 V.
The module has nine pins: CSB (chip select, active low), RESB (reset, active low), D/C (data/command selector), SCK (serial clock), SDA (serial data), VCC (3.0 V power), GND (ground), LED‑ (backlight negative), and LED+ (backlight positive, 3.0 V, 15 mA).