User manual for the YT12864A-3 graphic LCD module with pin definitions, electrical parameters, command set and example code.
The YT12864A-3 graphic LCD module combines a T6963C controller with a 128×64 dot matrix display. It can interface directly with 8‑bit microprocessors of the 80 series and supports both graphic and text display modes, as well as character copy operations.
The manual provides mechanical drawings, pin assignments, electrical specifications, timing diagrams, a full command reference, CGROM character library details, and sample 8051 assembly programs for initializing and operating the display. This manual is written in Chinese.
| Resolution | 128 columns × 64 rows |
|---|---|
| Power supply voltage (VDD) | -0.3 V to 7.0 V |
| Logic working voltage | 5.0 V (typical) |
| Operating temperature | -20 °C to 70 °C |
| Backlight positive pin | LED+ (+5 V) |
The module supports two hardware‑set font sizes: 6×8 and 8×8.
The /RST pin is the reset signal (active low).
Display mode is set with command codes such as 1000x000, where the bits define the desired mode.
The typical logic current (IDD) is 25 mA.