EPD3330 RISC II Series Microcontroller Product Specification
The EPD3330 is an 8‑bit RISC MCU with a 10‑bit SAR A/D converter, LCD driver, multiple timers, PWM, and UART interfaces, aimed at educational learning tools and low‑cost high‑performance applications. The document details the core architecture, peripheral set, and usage notes, including important register restrictions.
Technical data include operating voltage ranges, memory capacities, pin assignments, electrical limits, and recommended operating conditions. Revision history and pad‑layout diagrams are also provided for PCB designers.
| Operating voltage and speed | 10 MHz ~ 9.83 MHz @ 2.6 V, 8 MHz @ 2.4 V |
|---|---|
| Program ROM addressing | 32 K words max |
| Data ROM addressing | 512 K words max |
| Un‑banked RAM | 128 bytes |
| Banked RAM | 32 × 128 bytes |
| ADC resolution | 10‑bit SAR |
| Maximum operating temperature | -10 °C ~ +60 °C |
The device operates at 10 MHz ~ 9.83 MHz when supplied with 2.6 V and at 8 MHz with 2.4 V.
It can address up to 32 K words of program ROM.
The MCU provides one input port (Port A) and 32 general I/O pins across ports B, C, D, G, and H.