The DS80C310 is a fast 80C31/80C32-compatible microcontroller
The DS80C310 is a high‑speed, 8051‑compatible microcontroller offering up to 33 MHz crystal operation and up to 2.5× faster instruction execution than standard 8051 devices. It is pin‑compatible with the 80C32 and includes three 16‑bit timer/counters, 256 bytes of RAM, a full‑duplex serial port, and dual data pointers for efficient block memory moves.
The document details ordering information, pin descriptions for DIP, PLCC and TQFP packages, special function registers, memory access timing (including programmable MOVX stretch), and compatibility notes. Revision history and package drawings are also provided.
| Maximum crystal speed | 33 MHz |
|---|---|
| RAM | 256 bytes |
| Timer/counters | Three 16‑bit |
| Serial port | Full‑duplex |
| Clocks per machine cycle | 4 |
| Package options | 40‑Pin DIP, 44‑Pin PLCC, 44‑Pin TQFP |
The device supports up to 33 MHz crystal speed.
It includes three 16‑bit timer/counters.
The default stretch value is 1, giving a 3‑cycle MOVX.