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P87C51RA+4A from PHILIPS

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P87C51RA+4A

Manufacturer: PHILIPS

80C51 8-bit microcontroller family 8K.64K/256.1K OTP/ROM/ROMless, low voltage 2.7V.5.5V, low power, high speed 33 MHz

Partnumber Manufacturer Quantity Availability
P87C51RA+4A,P87C51RA4A PHILIPS 18 In Stock

Description and Introduction

80C51 8-bit microcontroller family 8K.64K/256.1K OTP/ROM/ROMless, low voltage 2.7V.5.5V, low power, high speed 33 MHz The **P87C51RA+4A** is a high-performance 8-bit microcontroller from **PHILIPS**, designed for embedded control applications. Based on the **80C51** architecture, it combines enhanced processing power with low power consumption, making it suitable for industrial, automotive, and consumer electronics.  

This microcontroller features **16KB of OTP (One-Time Programmable) ROM**, **512 bytes of RAM**, and a rich set of peripherals, including **four 8-bit I/O ports**, three 16-bit timers/counters, and a full-duplex UART for serial communication. Its **4A** suffix indicates an extended operating voltage range (2.7V to 5.5V), ensuring compatibility with various power supply conditions.  

The **P87C51RA+4A** supports **6-clock and 12-clock operation modes**, allowing flexibility in balancing speed and power efficiency. With an instruction set optimized for real-time control, it delivers efficient execution of embedded tasks. Additional features include **watchdog timer support**, **power-saving idle and power-down modes**, and **interrupt handling with multiple priority levels**.  

Engineers favor this microcontroller for its reliability, ease of integration, and robust performance in demanding environments. Its OTP memory ensures secure firmware storage, while its industrial-grade design guarantees stability across temperature variations. The **P87C51RA+4A** remains a dependable choice for developers seeking a versatile and cost-effective 80C51-based solution.

Application Scenarios & Design Considerations

80C51 8-bit microcontroller family 8K.64K/256.1K OTP/ROM/ROMless, low voltage 2.7V.5.5V, low power, high speed 33 MHz

Alternative Part Number

  • AT89C51RC-24AU --: Pin-compatible 8051 microcontroller with 32KB flash, drop-in replacement for the P87C51RA in most 44-pin PLCC/QFP sockets.
  • N87C51RA1 --: Original 8051-family ROM-less microcontroller with matching 32KB EPROM architecture, widely used as a direct substitute for Philips P87C51RA parts.
  • DS89C450-MNL --: High-speed 8051-compatible microcontroller with 64KB flash, functionally equivalent and often used to replace legacy P87C51RA designs.

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