CM240128-3 is a graphic dot matrix LCD display module, which consists of controller HD61830, row driver / column driver and 240× 128 full dot matrix LCD. It can complete graphic display and also display 15× 8 (16× 16 dot matrix) Chinese characters.
This manual describes the CM240128-3SLYB graphics LCD module produced by Guangzhou Ruichong Technology Co., Ltd. It includes the module's physical dimensions, hardware structure, pin assignments, and electrical parameters.
The document also provides interface details for 68‑series MPU control timing, power supply requirements, backlight options, and example code for interfacing the module with an 8031 microcontroller. This manual is written in Chinese.
| Power supply (VDD) | 4.5 V – 5.5 V |
|---|---|
| Display resolution | 240 columns × 128 rows |
| Backlight type | LED (yellow‑green, blue, white) |
| Operating temperature | -10 °C – +60 °C |
| Storage temperature | -20 °C – +70 °C |
| Interface compatibility | 68‑series MPU control timing |
| Duty cycle | 1/128 |
| Supply current (IDD) | 12.0 mA – 17.0 mA |
The module operates with a VDD voltage between 4.5 V and 5.5 V.
It displays 240 columns by 128 rows of pixels.
The module uses an LED backlight available in yellow‑green, blue, or white.
The interface is compatible with the 68‑series MPU control timing.