C8051F571-IMR

Overview

The C8051F571-IMR is an 8-bit mixed-signal microcontroller from the Silicon Labs C8051F57x family, featuring a high-speed CIP-51 core operating at up to 50 MHz. It integrates 32 KB of in-system programmable Flash memory and 2.25 KB of internal data RAM. The device includes a 12-bit ADC with up to 200 ksps throughput and 32 external single-ended inputs, two comparators, and extensive digital peripherals including CAN 2.0, LIN 2.1, UART, SMBus, and SPI interfaces. It operates on a supply voltage range of 1.8 V to 5.25 V and is housed in a 40-pin QFN package.

Feature Summary

• Integrated 12-bit analog-to-digital converter supporting up to 200 ksps sampling rate with multiple input channels and configurable reference sources.
• On-chip debug circuitry enabling full-speed, non-intrusive in-system debugging without requiring external emulation hardware.
• Hardware-enhanced serial communication controllers for CAN 2.0 and LIN 2.1 that operate without external crystals.
• Pipelined instruction architecture executing 70% of instructions in one or two system clocks for high throughput.

Applications

• Industrial control systems requiring robust analog signal processing and digital communication.
• Automotive applications meeting AEC-Q100 qualification standards for temperature ranges.
• Smart sensor nodes utilizing low-power stop modes and integrated temperature sensing.
• Embedded devices needing in-system programming capabilities via Flash memory sectors.

Procurement Notes

Verify component authenticity against official Silicon Labs documentation before integration. Confirm package marking and revision level match the specified datasheet Rev. 1.4. Ensure design compliance with absolute maximum ratings and electrical characteristics defined in the specification sheet. Check for any product change notices regarding assembly or labeling updates prior to final procurement authorization.

Selection Notes

Select this variant when 32 KB of Flash and 2.25 KB of RAM are sufficient for application logic. Choose the 40-pin QFN package if higher I/O count and peripheral availability are required compared to smaller packages. Consider the internal oscillator accuracy and clock switching features if precise timing synchronization across multiple clock domains is necessary for the specific system design.

Part Context

This component belongs to the C8051F55x/56x/57x mixed-signal ISP Flash MCU family. It shares architectural similarities with other members like the C8051F561 but differs in specific memory sizes and pin configurations. The family emphasizes high performance within the 8-bit MCU segment while maintaining compatibility with standard 8051 toolchains and development environments.

Replacement Considerations

Public confirmed substitute part numbers: None identified in verified source material.