This document is the application note for OLED display module DD-25664BE-1A, which introduces the hardware connection, timing characteristics, and usage methods of the module.
The DD-25664BE-1A is an OLED display module supplied with an EVK evaluation board. It uses an 80xx‑parallel 8‑bit interface and provides pins for data, control, power, and reset. The document includes schematics, symbol definitions, timing charts, and wiring details for connecting the module to a microcontroller.
The note covers the pin functions (DO0‑DO7 data bus, CS#, P/S, WR, SD/C, RES, HV, LV, GND), timing parameters such as address hold and setup times, and provides example initialization code that sets scan lines, gray scale, luminance, and other driver registers.
| Address Hold Time (WR) | 10 ns |
|---|---|
| Address Setup Time (WR) | 0 ns |
| Interface type | 80xx‑parallel 8‑bit |
| Reset behavior | Active low; initialization on low pulse |
Pins DO0‑DO7 constitute an 8‑bit bi‑directional data bus that connects to the MCU’s data bus.
Pull the RES# pin low, wait about 10 ms, then release it high to complete the hardware reset.
CS# is the chip‑select input; the chip is enabled for MCU communication only when CS# is pulled low.
Use the function DotScanLineSet with the desired value, e.g., DotScanLineSet(0x3f) sets 64 scan lines.