C8051F500-IMR

Overview

The C8051F500-IMR is an automotive-grade, mixed-signal ISP Flash microcontroller from the Silicon Labs C8051F50x family. It features a high-speed pipelined 8051 core delivering up to 50 MIPS at a 50 MHz clock frequency. The device integrates 64 kB of in-system programmable Flash memory and 4352 bytes of internal data RAM (including 4096 bytes XRAM). Key analog peripherals include a 12-bit ADC with up to 200 ksps throughput and two low-current comparators. Digital interfaces encompass CAN 2.0, LIN 2.1, SMBus, SPI, and UARTs. It operates on a supply voltage of 1.8 V to 5.25 V within a temperature range of –40 °C to +125 °C and is housed in a 48-pin QFN package.

Feature Summary

• Automotive qualified to AEC-Q100 standards for operation in harsh environments
• Integrated CAN 2.0 and LIN 2.1 controllers eliminating external transceivers or crystals
• On-chip debug circuitry enabling full-speed, non-intrusive in-system debugging
• In-system programmable Flash allowing field upgrades without removing the chip

Applications

• Automotive body control modules and gateway applications
• Industrial motor control systems requiring precise timing
• Sensor interface nodes utilizing the integrated 12-bit ADC
• LIN/CAN bus network nodes in vehicle communication architectures

Procurement Notes

Verify that the specific ordering suffix matches the required package type and tape-and-reel quantity. Confirm the revision level against the latest datasheet as this component is marked Not Recommended for New Designs. Ensure compatibility with existing firmware given the end-of-life status of the broader C8051F50x series.

Selection Notes

Select this part when automotive qualification is mandatory alongside legacy 8051 software architecture. The integrated CAN and LIN controllers reduce bill-of-materials complexity compared to solutions requiring external controllers. Evaluate the 40 I/O count against system pin requirements, noting that all ports are 5 V tolerant.

Part Context

This component belongs to the C8051F50x/F51x mixed-signal MCU family designed for constrained space applications. It shares pin-for-pin compatibility with other devices in the C8051F50x, C8051F51x, and C8051F58x/59x series. The family emphasizes System-on-a-Chip integration by combining processing, analog conversion, and robust digital communication interfaces.

Replacement Considerations

Public confirmed substitute part numbers: None identified.