P8798

Microcontrollers Overview

The P8798 is a microcontroller unit manufactured by Philips Semiconductors, now distributed by Rochester Electronics. It features an 80C51-compatible core with 32 KB of Flash program memory and 1 KB of RAM. The device includes multiple I/O ports, two full-duplex serial interfaces, and four 16-bit timer/counters. It supports standard 80C51 instruction sets and offers low-power idle and power-down modes for energy efficiency in embedded control applications.

Microcontrollers Feature Summary

• Integrated 32 KB Flash memory for non-volatile program storage
• Dual serial communication interfaces supporting asynchronous and synchronous modes
• Four independent 16-bit timer/counter units for precise timing control
• Standard 80C51 architecture ensuring broad software compatibility

Microcontrollers Applications

• Industrial motor control systems
• Consumer appliance logic controllers
• Embedded sensor data acquisition modules
• Automotive body electronics subsystems

Microcontrollers Procurement Notes

Verify the specific suffix code on the component marking to confirm package type and temperature range. Rochester Electronics sources these parts from surplus channels; ensure the datasheet matches your exact variant requirements. Confirm lead times and warranty terms directly with the supplier prior to order placement.

Microcontrollers Selection Notes

Select this component when an 80C51-compatible architecture with integrated Flash memory is required. Evaluate pin count and peripheral availability against system interface needs. Consider power consumption specifications if battery operation is critical. Ensure development tools support the specific revision level of the silicon.

Microcontrollers Part Context

This part belongs to the Philips P87Cxx family of 8-bit microcontrollers based on the classic 80C51 core. These devices were widely used in the late 1990s and early 2000s for cost-sensitive embedded applications. Rochester Electronics provides lifecycle support for obsolete components, ensuring continuity for long-term manufacturing designs.

Microcontrollers Replacement Considerations

• P87C664
• P87C552

Microcontrollers FAQ

Does the P8798 support in-system programming?

Yes, the integrated Flash memory allows for in-system programming via the serial interface.

What is the maximum operating frequency?

The device typically supports clock frequencies up to 33 MHz, depending on the specific suffix variant.