C8051F566-IMR

Overview

The C8051F566-IMR is an automotive-grade mixed-signal ISP Flash MCU from the C8051F56x family, manufactured by Silicon Labs. It features a high-speed 8051 core operating at up to 50 MIPS with a 50 MHz clock. The device integrates 32 kB of in-system programmable Flash memory and 2304 bytes of internal data RAM. Key analog peripherals include a 12-bit ADC supporting up to 200 ksps sampling rate and two comparators. Digital interfaces encompass CAN 2.0, LIN 2.1, UART, SMBus, and SPI. It operates within a supply voltage range of 1.8 V to 5.25 V and supports an industrial temperature range of –40 °C to +125 °C.

Feature Summary

• Automotive qualified compliance with AEC-Q100 standards for robust operation in demanding environments
• Integrated CAN 2.0 and LIN 2.1 controllers enabling direct network connectivity without external transceivers or crystals
• High-performance pipelined 8051 core executing 70% of instructions in one or two system clocks for efficient processing
• On-chip debug circuitry facilitating full-speed, non-intrusive in-system debugging without requiring external emulation hardware

Applications

• Automotive body control modules and sensor interfaces
• Industrial communication gateways utilizing CAN and LIN protocols
• Embedded systems requiring mixed-signal processing with integrated ADC capabilities
• Cost-sensitive applications needing standalone system-on-a-chip solutions with in-circuit reprogrammability

Procurement Notes

Verify component authenticity through authorized distributors or official Silicon Labs channels. Confirm that the specific revision matches project requirements, as this family is designated Not Recommended for New Designs. Ensure compatibility with existing firmware architectures given the legacy status. Check for any available replacement recommendations from the manufacturer before finalizing procurement decisions.

Selection Notes

Select this component when automotive qualification is mandatory alongside mixed-signal integration. Consider it for designs requiring both CAN and LIN bus support on a single chip. Evaluate the trade-off between the established 8051 ecosystem and newer architectures. Verify pinout compatibility if migrating from previous C8051F55x/57x series devices due to potential package variations.

Part Context

This microcontroller belongs to the C8051F55x/56x/57x family of mixed-signal ISPs Flash MCUs. These devices are designed to provide high performance and integration in small form factors. The family shares common architectural features including the CIP-51 core and extensive peripheral sets. This specific model represents a variant within the automotive-focused subset of the broader C8051F series portfolio.

Replacement Considerations

Official documentation indicates this family is Not Recommended for New Designs. Consult Silicon Labs for current recommended alternatives. Pin-for-pin compatibility may exist with other C8051F5xx series variants, but verify electrical specifications and feature sets carefully before substitution.