C8051F501-IQ

Overview

The C8051F501-IQ is an 8-bit mixed-signal microcontroller from the Silicon Labs C8051F50x family, housed in a 48-pin QFN package. It features a high-speed pipelined 8051 core operating at up to 50 MHz with 64 kB of in-system programmable Flash memory and 4352 bytes of internal data RAM. The device integrates a 12-bit ADC supporting up to 200 ksps, two comparators, and a built-in temperature sensor. Digital peripherals include CAN 2.0, LIN 2.1, UART, SMBus, SPI, four 16-bit timers, and a PCA with PWM capabilities. It operates on a supply voltage of 1.8 V to 5.25 V and is qualified for automotive applications within a -40°C to +125°C temperature range.

Feature Summary

• High-performance 8051 core with pipelined architecture delivering up to 50 MIPS throughput.
• Integrated analog subsystem featuring a 12-bit ADC, dual comparators, and temperature sensor.
• Full digital communication support including CAN 2.0, LIN 2.1, UART, SMBus, and SPI.
• Automotive-grade qualification compliant with AEC-Q100 standards.

Applications

• Automotive electronic control units requiring robust communication interfaces.
• Industrial monitoring systems utilizing precise analog signal acquisition.
• Smart sensors integrating local processing and connectivity.
• Battery-powered devices leveraging low-power stop modes.

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific ordering suffix matches the required package type and temperature grade. Check for current lifecycle status as this series may be subject to obsolescence notices. Ensure compatibility with existing design tools and development kits before finalizing procurement decisions.

Selection Notes

Select this model when a compact 48-pin solution is needed for applications demanding both high-speed digital processing and precision analog conversion. The inclusion of CAN and LIN controllers makes it suitable for networked environments without external transceivers. Consider the 64 kB Flash capacity against application code size requirements and verify that the 40 I/O pins meet interface needs.

Part Context

This component belongs to the C8051F50x/F51x mixed-signal MCU family, which provides pin-compatible options across various package sizes. The family shares a common instruction set and peripheral architecture, facilitating migration between different memory configurations and pin counts while maintaining software compatibility.

Replacement Considerations

Consult official substitution lists for compatible parts within the same family. Verify pinout and register compatibility if replacing with variants having different memory sizes or package types.

FAQ

Does the C8051F501-IQ require an external crystal for CAN operation?

No, the device includes a 24 MHz internal oscillator with ±0.5% accuracy specifically designed to support CAN and master LIN operation without an external crystal.

What is the maximum sampling rate of the integrated ADC?

The 12-bit ADC supports a maximum sampling rate of up to 200 ksps.