C8051F546-IMR

Overview

The C8051F546-IMR is an 8-bit mixed-signal microcontroller from the Silicon Labs C8051F54x family, featuring a high-speed CIP-51 core operating at up to 50 MIPS. It integrates 8 kB of in-system programmable Flash memory and 1280 bytes of internal data RAM. The device includes a 12-bit ADC with up to 200 ksps throughput and 18 digital I/O pins. It supports LIN 2.1, UART, SMBus, and SPI interfaces, operates within a supply voltage range of 1.8 V to 5.25 V, and is housed in a 24-pin QFN package.

Feature Summary

• Integrated 12-bit analog-to-digital converter with selectable gain and window detector capabilities
• 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
• Programmable Counter Array (PCA) providing capture/compare modules and enhanced PWM functionality

Applications

• Automotive embedded control systems requiring AEC-Q100 qualification
• Industrial sensor nodes utilizing integrated temperature sensing and ADC
• LIN bus network master or slave implementations
• Compact IoT devices constrained by space and power requirements

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific suffix matches the required package type and ensure compliance with RoHS3 standards. Review the latest errata sheet for known silicon revisions before finalizing procurement specifications.

Selection Notes

Select this model when 8 kB Flash capacity and 18 I/O pins are sufficient for the application. Consider alternative variants within the C8051F54x series if higher memory density or additional I/O ports are required. Ensure the design accommodates the 24-pin QFN footprint and thermal dissipation needs for the selected operating environment.

Part Context

This component belongs to the C8051F54x automotive and industrial MCU family. It shares pin-for-pin compatibility with other members of the C8051F54x, C8051F58x/59x, C8051F55x/56x/57x, and C8051F50x/1x series, facilitating design scalability across different memory and peripheral configurations.

Replacement Considerations

C8051F546-IM is a tube-packaged equivalent within the same series.