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P89LPC922FN from NXP,NXP Semiconductors

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P89LPC922FN

Manufacturer: NXP, PHILIS

8-bit microcontrollers with two-clock 80C51 core 2 kB/4 kB/8 kB 3 V low-power Flash with 256-byte data RAM

Partnumber Manufacturer Quantity Availability
P89LPC922FN NXP, PHILIS 2516 In Stock

Description and Introduction

8-bit microcontrollers with two-clock 80C51 core 2 kB/4 kB/8 kB 3 V low-power Flash with 256-byte data RAM The **P89LPC922FN** from NXP is a high-performance, low-power 8-bit microcontroller designed for embedded applications requiring efficient processing and minimal power consumption. Based on the 80C51 core, this MCU operates at frequencies up to 18 MHz, offering a balance of speed and energy efficiency.  

Featuring 8 kB of flash memory and 256 bytes of RAM, the P89LPC922FN provides sufficient storage for small to medium-sized firmware applications. Its integrated peripherals include a UART, I²C, SPI, and multiple timers, making it suitable for communication and control tasks. Additionally, the device supports in-system programming (ISP) and in-application programming (IAP), enabling flexible firmware updates without removing the chip from the circuit.  

With its low-power modes—including idle and power-down—the P89LPC922FN is ideal for battery-operated or energy-sensitive designs. Its robust I/O capabilities, combined with built-in features like watchdog timers and brown-out detection, enhance system reliability.  

Engineers often choose this microcontroller for applications such as industrial automation, consumer electronics, and IoT devices where cost-effectiveness and compact design are priorities. The P89LPC922FN’s combination of performance, power efficiency, and integrated features makes it a versatile solution for embedded system development.

Application Scenarios & Design Considerations

8-bit microcontrollers with two-clock 80C51 core 2 kB/4 kB/8 kB 3 V low-power Flash with 256-byte data RAM

Alternative Part Number

  • AT89LP4052-20PU --: 8051-compatible microcontroller with similar 8-bit core, flash program memory, and DIP-20 package; widely available and pin-function compatible for many P89LPC922FN applications.
  • STC89C52RC-40I-PDIP --: Classic 8051-core MCU in DIP-40 with flash memory and UART, offering a low-cost drop-in style replacement for legacy 8051 designs, though pin count differs and layout review is needed.
  • AT89S52-24PU --: Popular 8051-family flash microcontroller in DIP-40 with ISP programming, well documented and broadly stocked; suitable when extra I/O and code space are acceptable.
  • AT89C2051-24PU --: Classic 8051-compatible MCU in DIP-20 with similar pin count and 2KB flash, widely available and easy drop-in for legacy 8051 designs.
  • STC89C52RC-40I-PDIP --: 8051-core MCU in DIP-40 with 8KB flash and 512B RAM, offers more memory than the original and is a common replacement in 8051-based systems.
  • AT89S52-24PU --: 8051-compatible MCU in DIP-40 with 8KB flash and ISP programming, suitable when more I/O and memory are needed than the P89LPC922 provides.

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