C8051F541-IQ

Overview

The C8051F541-IQ is an automotive and industrial mixed-signal microcontroller from the C8051F54x family, manufactured by Silicon Labs. It features a high-speed 8051 core operating at up to 50 MHz with 50 MIPS throughput. The device includes 16 kB of in-system programmable Flash memory and 1280 bytes of internal data RAM. Key analog peripherals consist of a 12-bit ADC supporting up to 200 ksps and two comparators. Digital 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

• Automotive-grade qualification compliant with AEC-Q100 specifications for extended temperature operation.
• Integrated 12-bit ADC with up to 200 ksps sampling rate and built-in temperature sensor.
• Hardware-enhanced communication interfaces including LIN 2.1 controller without crystal requirement.
• Non-intrusive on-chip debug circuitry facilitating full-speed in-system debugging.

Applications

• Motor control systems
• Sensor interface modules
• Parking assistance units
• Seat position adjustment controllers

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific suffix matches the required package type and temperature grade. Check for current availability status as this series may be subject to lifecycle changes. Ensure compliance with RoHS3 directives if applicable to your manufacturing requirements.

Selection Notes

Select this MCU for applications requiring robust automotive reliability combined with mixed-signal capabilities. Consider the 16 kB Flash size and 1280 bytes RAM against application memory needs. Evaluate the pin count and peripheral set against system connectivity requirements. Verify that the 5 V tolerant I/O meets interface voltage levels.

Part Context

This component belongs to the C8051F54x family of mixed-signal ISP Flash MCUs. It shares pin-for-pin compatibility with other members of the C8051F54x, C8051F58x/59x, C8051F55x/56x/57x, and C8051F50x/1x series. The device is designed for constrained spaces while delivering significant performance integration.

Replacement Considerations

Silicon Labs recommends EFM8BB52F16I-QFN20 as a replacement for related end-of-life parts in this family. Verify functional equivalence and pin compatibility before substitution.

FAQ

Does the C8051F541 support LIN communication without an external crystal?

Yes, the integrated LIN 2.1 controller supports master and slave modes without requiring an external crystal.

What is the maximum sampling rate of the onboard ADC?

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