DM12864J is a graphic dot matrix LCD display module that uses dynamic driving principle. It has a full screen dot matrix of 128x64, which can display Chinese characters, graphics, and characters. It uses 5-bit control bus and 8-bit parallel data bus for input and output, suitable for M6800 series timing.
The DM12864J is a graphic dot‑matrix LCD module with a 128 × 64 pixel display. It uses a dynamic drive architecture with separate row and column drivers and includes an on‑board LCD driver and data latch.
The manual describes the module’s dimensions, pin functions, electrical characteristics, and proper handling procedures, providing the information needed for integration with a CPU via a 5‑bit control bus and an 8‑bit parallel data bus. This manual is written in Chinese.
| Display resolution | 128 × 64 dots |
|---|---|
| Dot pitch | 0.52 × 0.52 mm |
| Operating voltage | +3.3 V ±10 % |
| LCD negative driver voltage (YLCD) | -10 V (VDD‑VLCD ≈ 13.7 V) |
It can display 8 × 4 characters of 16 × 16‑dot Chinese characters, as well as graphics and alphanumeric text.
Pin 3 (YLCD) supplies a –10 V driver voltage; the required difference VDD‑VLCD is about 13.7 V.