C8051F551-IM

Overview

The C8051F551-IM is a mixed-signal ISP Flash MCU from the Silicon Labs C8051F55x family, featuring a high-speed 8051 core with up to 50 MIPS throughput at 50 MHz. It integrates 32 kB of in-system programmable Flash and 2304 bytes of internal data RAM. Key analog peripherals include a 12-bit ADC supporting up to 200 ksps and two comparators. Digital interfaces comprise CAN 2.0, LIN 2.1, UART, SMBus, and SPI. The device operates on a supply voltage of 1.8 to 5.25 V, supports automotive qualification (AEC-Q100) within a -40 to +125 °C range, and utilizes a pipelined instruction architecture for efficient processing.

Feature Summary

• Integrated CAN 2.0 and LIN 2.1 controllers enabling network communication without external crystals
• On-chip debug circuitry providing full-speed, non-intrusive in-system debugging capabilities
• Automotive-grade qualification compliant with AEC-Q100 standards for extended temperature operation
• High-speed pipelined 8051 microcontroller core delivering up to 50 MIPS performance

Applications

• Automotive body control modules requiring robust CAN/LIN connectivity
• Industrial sensor interfaces utilizing the integrated 12-bit ADC and comparators
• Embedded systems needing in-system programming via ISP Flash technology
• Temperature monitoring applications leveraging the built-in temperature sensor

Procurement Notes

Verify the specific suffix 'IM' against the manufacturer's current ordering guide to confirm package type and temperature grade. Note that this component family is marked as Not Recommended for New Designs; ensure long-term availability aligns with product lifecycle requirements before finalizing procurement decisions.

Selection Notes

Select this part when an automotive-qualified 8051-based solution with integrated CAN and LIN controllers is required. Consider the 32 kB Flash size and 2304 bytes RAM for memory constraints. Evaluate the 1.8 V to 5.25 V operating range against system power supplies. Confirm compatibility with existing development tools given the discontinued status of the F55x series.

Part Context

This component belongs to the C8051F55x/56x/57x Mixed Signal ISP Flash MCU Family. These devices share common architectural features including the CIP-51 core, analog peripherals, and digital interfaces. The F551 variant specifically offers 32 kB Flash memory, distinguishing it from lower-capacity siblings within the same package options.

Replacement Considerations

Public documentation explicitly marks the C8051F55x/56x/57x family as Not Recommended for New Designs. No direct public substitute part numbers are listed in the provided datasheet. Engineers should consult Silicon Laboratories for recommended modern replacements or alternative families suitable for new designs.