C8051F541-IMR

Overview

The C8051F541-IMR is an automotive and industrial mixed-signal ISP Flash microcontroller from Silicon Labs, part of the C8051F54x family. It features a high-speed 8051 core operating at up to 50 MHz with 16 kB of in-system programmable Flash memory and 1280 bytes of internal data RAM. The device integrates a 12-bit ADC with up to 200 ksps sampling rate, two comparators, and a built-in temperature sensor. Communication interfaces include LIN 2.1, UART, SMBus, and SPI. It operates on a supply voltage of 1.8 V to 5.25 V and is qualified to AEC-Q100 standards for temperatures ranging from –40 °C to +125 °C.

Feature Summary

• Integrated 12-bit analog-to-digital converter supporting up to 200 ksps sampling rates with multiple input channels.
• On-chip debug circuitry enabling full-speed, non-intrusive in-system debugging without external emulators.
• Hardware-enhanced serial communication peripherals including LIN 2.1 controller, UART, SMBus, and SPI.
• Automotive qualification compliant with AEC-Q100 standards for reliable operation in harsh environments.

Applications

• Automotive body control modules
• Industrial sensor interfaces
• LIN bus network nodes

Procurement Notes

Verify the specific suffix 'IMR' indicates tape-and-reel packaging when sourcing components. Confirm that the component status is noted as Not Recommended for New Designs (NRND) by the manufacturer before finalizing procurement plans. Ensure compatibility with existing design infrastructure given the end-of-life guidance associated with this product line.

Selection Notes

Select this component for applications requiring robust automotive-grade performance within constrained space. The pin-for-pin compatibility with other C8051F54x variants allows for flexible design scaling. Consider the integrated voltage regulator and clock oscillator capabilities which reduce external component count. Evaluate the 5V tolerant I/O ports for direct interfacing with legacy digital systems.

Part Context

This microcontroller belongs to the C8051F54x series, designed for high integration in automotive and industrial sectors. It shares architectural similarities with the C8051F58x/59x and C8051F55x/56x/57x families, facilitating migration between different pin counts and peripheral sets while maintaining software compatibility.

Replacement Considerations

Consult official documentation for current alternative recommendations due to the NRND status. Pin-compatible upgrades within the same family may be available depending on specific peripheral requirements.

FAQ

Is the C8051F541-IMR suitable for automotive applications?

Yes, it is qualified to AEC-Q100 standards and supports the –40 °C to +125 °C temperature range required for automotive use.

What is the maximum sampling rate of the onboard ADC?

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