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P87C51RB+4B from PHILIPS

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P87C51RB+4B

Manufacturer: PHILIPS, PHI

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
P87C51RB+4B,P87C51RB4B PHILIPS, PHI 554 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 **P87C51RB+4B** from **PHILIPS** is an enhanced 80C51 microcontroller designed for embedded applications requiring high performance and reliability. Built on a robust CMOS architecture, this component integrates an 8-bit CPU with advanced features such as in-system programmability, expanded memory, and versatile peripheral interfaces.  

With **16KB of OTP (One-Time Programmable) ROM** and **512 bytes of RAM**, the P87C51RB+4B offers ample storage for firmware and data processing. It operates at clock speeds up to **24MHz**, ensuring efficient execution of complex tasks. The microcontroller supports multiple power-saving modes, making it suitable for battery-operated or energy-efficient systems.  

Key features include **three 16-bit timers/counters**, a **full-duplex UART** for serial communication, and **32 programmable I/O lines** for interfacing with external devices. Its compatibility with the 80C51 instruction set ensures seamless integration into existing designs while benefiting from enhanced performance.  

The P87C51RB+4B is widely used in industrial automation, consumer electronics, and automotive systems, where durability and precision are critical. Its OTP memory provides secure, non-volatile storage, ideal for applications requiring firmware stability.  

For developers seeking a dependable 80C51-based solution, the P87C51RB+4B delivers a balanced combination of speed, functionality, and power efficiency.

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

  • AT89C51RB2-24PU --: Pin-compatible 8051 microcontroller with 16KB flash, drop-in replacement for the P87C51RB in most legacy designs.
  • DS89C450-MNL --: High-speed 8051-compatible microcontroller with 64KB flash, suitable where higher performance and code space are needed.
  • W78E516B-40PL --: 8051-core microcontroller with 64KB flash and similar peripheral set, commonly used as a substitute for Philips 87C51 devices.
  • AT89C51RB2-24PU --: 8051-compatible MCU with 16KB flash and similar peripheral set, pin-compatible DIP-40 package, widely available and easy drop-in replacement.
  • STC89C52RC-40I-PDIP --: Classic 8051 core MCU in DIP-40 with 8KB flash, very low cost and commonly used as a substitute for legacy Philips 87C51 parts.
  • W78E516B-40PL --: 8051-family microcontroller with 64KB flash in PLCC/DIP options, functionally similar to the P87C51RB and supported for legacy designs.

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