C8051F547-IM

Overview

The C8051F547-IM is an automotive-grade, mixed-signal ISP Flash MCU from the C8051F54x family. It features a high-speed 8051 core with up to 50 MIPS throughput at a 50 MHz clock frequency. The device integrates 16 kB of in-system programmable Flash memory and 1280 bytes of internal data RAM (256 + 1024 XRAM). Key analog peripherals include a 12-bit ADC with up to 200 ksps sampling rate and two comparators. Digital interfaces comprise LIN 2.1, UART, SMBus, and SPI. It operates on a supply voltage of 1.8 V to 5.25 V and supports an industrial temperature range of –40 °C to +125 °C.

Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for robust operation in demanding environments.
• Integrated LIN 2.1 controller supporting both master and slave modes without requiring an external crystal.
• On-chip debug circuitry enabling full-speed, non-intrusive in-system debugging via the C2 interface.
• Flexible clock system allowing on-the-fly switching between internal oscillators and external sources.

Applications

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

Procurement Notes

Verify component authenticity through authorized Silicon Labs distributors or certified partners. Confirm the specific revision level matches project requirements. Check for End-of-Life status as indicated in documentation. Ensure environmental compliance certifications are current. Validate package integrity upon receipt.

Selection Notes

Select this model for applications requiring automotive reliability and integrated LIN communication. Consider pin compatibility with other C8051F54x variants if space constraints exist. Evaluate power consumption profiles against system battery requirements. Verify peripheral availability meets interface needs.

Part Context

This microcontroller belongs to the C8051F54x series, designed for high integration in constrained spaces. It shares architectural similarities with the C8051F58x/59x and C8051F50x/1x families. The device serves as a standalone system-on-a-chip solution with built-in voltage regulators and reset sources.

Replacement Considerations

Silicon Labs recommends EFM8BB52F16I-QFN20 as a replacement. Verify functional equivalence and pinout compatibility before substitution.

FAQ

Does the C8051F547-IM require an external crystal for LIN operation?

No, the device includes an internal 24 MHz oscillator with ±0.5% accuracy sufficient for master LIN operation without a 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.