P87C51FA-4N,112

Microcontrollers Overview

The P87C51FA-4N,112 is an 8-bit microcontroller from the Philips/NXP 80C51 family. It features a 4K-byte OTP ROM and 256 bytes of RAM. The device operates at speeds up to 33 MHz with a supply voltage range of 2.7V to 5.5V. It includes four 8-bit I/O ports, three 16-bit timers/counters, and a programmable counter array (PCA).

Microcontrollers Feature Summary

• Integrates a Programmable Counter Array (PCA) for pulse width modulation and capture/compare functions.
• Supports full static operation with selectable 6-clock or 12-clock modes.
• Includes security bits and an encryption array for code protection.
• Features an enhanced UART with framing error detection and automatic address recognition.

Microcontrollers Applications

• General control systems requiring low power consumption.
• Motor control applications utilizing PCA capabilities.
• Multiprocessor communication networks via the enhanced serial channel.

Microcontrollers Procurement Notes

Verify the specific suffix '112' against official NXP documentation to confirm package type and temperature grade. Ensure compatibility with existing DIP-40 footprints. Confirm that the OTP memory configuration meets the final application requirements before deployment.

Microcontrollers Selection Notes

Select this component when 4K of non-volatile storage is sufficient alongside 256 bytes of RAM. The inclusion of the PCA module makes it suitable for designs needing hardware PWM without external components. Verify that the 2.7V to 5.5V operating range aligns with the system power supply.

Microcontrollers Part Context

This part belongs to the 8XC51FA/FB/FC series, which are derivatives of the standard 80C51 architecture. These devices offer architectural enhancements such as the PCA and additional interrupt sources compared to the base 80C51 model. They are manufactured using advanced CMOS technology for high speed and low power.

Microcontrollers Replacement Considerations

P87C51FB-4N,112: Offers 16K OTP ROM instead of 4K. P87C51FC-4N,112: Offers 32K OTP ROM instead of 4K. P80C51FA-4N,112: ROMless variant requiring external program memory.