The 83C654 is a single-chip 8-bit microcontroller manufactured by Philips Semiconductors. It has the same function as 80C51 and can be expanded using standard TTL compatible memories and logic.
This document is a product specification datasheet for the Philips 83C654 CMOS single-chip 8-bit microcontroller. The device is manufactured in an advanced CMOS process and serves as a derivative of the 80C51 microcontroller family, featuring the same instruction set.
Key features include 16k x 8 mask programmable ROM (expandable to 64k), 256 x 8 RAM (expandable to 64k), four 8-bit I/O ports, two 16-bit timer/event counters, and an I2C-bus serial I/O port. The microcontroller supports full-duplex UART facilities and various power control modes such as Idle and Power-down.
| Instruction Set Compatibility | Same instruction set as the 80C51 |
|---|---|
| Program Memory Size | 16k x 8 ROM |
| Data Memory Size | 256 x 8 RAM |
| I/O Ports | Four 8-bit I/O ports |
| Timers/Counters | Two 16-bit timer/event counters |
| UART Capability | Full-duplex UART facilities |
| Operating Frequency Range | 3.5 to 24 MHz |
The 83C654 is a derivative of the 80C51 microcontroller family that provides architectural enhancements for general control systems.
Yes, the internal 16k x 8 ROM can be expanded externally up to 64k bytes.