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P89LV51RD2FA from PHI,Philips

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P89LV51RD2FA

Manufacturer: PHI, PHILIPS

8-bit 80C51 3 V low power 64 kB Flash microcontroller with 1 kB RAM

Partnumber Manufacturer Quantity Availability
P89LV51RD2FA PHI, PHILIPS 126 In Stock

Description and Introduction

8-bit 80C51 3 V low power 64 kB Flash microcontroller with 1 kB RAM The **P89LV51RD2FA** from Philips (now NXP Semiconductors) is an advanced 8-bit microcontroller based on the 8051 architecture. Designed for high-performance embedded applications, it combines low power consumption with enhanced processing capabilities, making it suitable for industrial control, automation, and consumer electronics.  

Featuring **64 KB of Flash memory** and **1 KB of RAM**, the P89LV51RD2FA supports in-system programming (ISP) and in-application programming (IAP), allowing flexible firmware updates without removing the chip from the circuit. It operates at **3.3V**, reducing power dissipation while maintaining compatibility with legacy 5V systems.  

Key enhancements include a **six-clock instruction cycle mode**, significantly improving execution speed over traditional 8051 variants. The microcontroller also integrates multiple peripherals, such as **UART, SPI, and I²C interfaces**, along with **three 16-bit timers/counters** and a **watchdog timer** for robust system monitoring.  

With its **low EMI emission** and **wide operating temperature range**, the P89LV51RD2FA is well-suited for demanding environments. Its compact **PLCC-44** and **LQFP-44** packages ensure space-efficient PCB designs.  

Engineers favor this microcontroller for its balance of performance, power efficiency, and legacy compatibility, making it a reliable choice for modern embedded systems.

Application Scenarios & Design Considerations

8-bit 80C51 3 V low power 64 kB Flash microcontroller with 1 kB RAM

Alternative Part Number

  • AT89C51RD2-IM --: Pin-compatible 8051 with 64KB flash, drop-in replacement for the P89LV51RD2 in most 3.3V/5V designs.
  • W78E516DDG --: 8051-compatible MCU with 64KB flash and similar peripheral set, widely used as a Philips 8051 alternative.
  • STC89C52RC-40I-PDIP --: Low-cost 8051-compatible MCU with 8KB flash, suitable for less demanding applications needing a similar architecture.
  • AT89LP51RD2-20PU --: 8051-compatible MCU with similar flash and RAM, low-voltage operation, and pin-compatible DIP package; widely available and well documented.
  • STC89C52RC-40I-PDIP --: Popular 8051-core replacement with 8KB flash, 512B RAM, 5V/3.3V support, and similar ISP programming; commonly used as a drop-in substitute in legacy designs.
  • W78E516DPG --: 8051-family microcontroller with 64KB flash and 512B RAM, 2.7-5.5V range, and DIP-40 footprint; suitable functional replacement for legacy Philips 8051 parts.

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