C8051F566-IQR

Overview

The C8051F566-IQR is an automotive-qualified mixed-signal ISP Flash MCU from the C8051F56x family. It features a high-speed 8051 core with up to 50 MIPS throughput and 32 kB of in-system programmable Flash memory. The device integrates a 12-bit ADC with up to 200 ksps sampling rate, two comparators, and a built-in temperature sensor. Digital peripherals include CAN 2.0 and LIN 2.1 controllers without external crystals, alongside hardware UART, SMBus, and SPI interfaces. It operates on a 1.8 V to 5.25 V supply within a -40 °C to +125 °C range.

Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for extended temperature operation
• Integrated CAN 2.0 and LIN 2.1 controllers enabling crystal-less communication
• On-chip debug circuitry supporting full-speed non-intrusive in-system debugging
• High-performance pipelined CIP-51 core executing 70% of instructions in one or two system clocks

Applications

• Automotive body control modules
• Industrial motor drives
• Sensor interface nodes
• Embedded communication gateways

Procurement Notes

Verify component status as the C8051F55x/56x/57x family is designated Not Recommended for New Designs. Confirm availability through authorized distributors and check for active replacement part numbers before initiating procurement. Ensure design reviews account for end-of-life constraints associated with this specific silicon generation.

Selection Notes

Select this component when automotive reliability is required alongside integrated CAN and LIN capabilities. The 32 kB Flash and 2304 bytes RAM configuration suits applications needing moderate code storage and data handling. Verify pin compatibility with existing layouts, as the QFN package requires specific thermal pad grounding considerations during PCB assembly.

Part Context

This microcontroller belongs to the C8051F56x series, designed for cost-sensitive yet robust embedded environments. It shares architectural similarities with the C8051F55x and C8051F57x families, offering pin-for-pin compatibility across certain variants. The device represents Silicon Labs' strategy to provide fully integrated mixed-signal solutions within compact form factors.

Replacement Considerations

Consult official documentation for current substitute part numbers within the C8051F5xx family. Verify functional equivalence regarding memory size, peripheral count, and package dimensions before transitioning designs.