This datasheet introduces the 8XC52/54/58/80C32, 8XC51FA/FB/FC/80C51FA 8XC51RA+/RB+/RC+/RD+/80C51RA + 80C51 8-bit microcontroller families, which are manufactured in advanced CMOS process and are derivatives of the 80C51 microcontroller family. All devices have the same instruction set as the 80C51 and provide some architectural enhancements that make them applicable to a variety of applications.
This Philips datasheet describes three 8-bit microcontroller families – the 8XC52/54/58/80C32 series, the 8XC51FA/FB/FC/80C51FA series and the 8XC51RA+/RB+/RC+/RD+/80C51RA+ series. All devices are fabricated in an advanced CMOS process, operate at low voltage (2.7 V‑5.5 V), and offer low power, high‑speed performance up to 33 MHz.
The document provides detailed product specifications, pin descriptions, package options, ordering information and safety notes. It also lists features such as four 8‑bit I/O ports, multiple timers, a full‑duplex UART, and a 4‑level priority interrupt system, making the devices suitable for a wide range of control applications.
| Operating voltage range | 2.7 V to 5.5 V |
|---|---|
| Maximum CPU speed | 33 MHz |
| ROM/EPROM size | 8 KB‑64 KB (ROM/EPROM), 256 B‑1 KB OTP |
| RAM size | Up to 64 KB |
| I/O ports | Four 8‑bit ports (P0‑P3) |
| Interrupt priority levels | 4‑level priority |
The devices operate from 2.7 V to 5.5 V.
The microcontrollers can run up to 33 MHz.
RAM can be expanded to a maximum of 64 KB.