C8051F503-IMR

Overview

The C8051F503-IMR is an 8-bit mixed-signal microcontroller from the Silicon Labs C8051F50x family, housed in a 32-pin QFN package. It features a high-speed pipelined 8051 core operating at up to 50 MHz with 64 kB of in-system programmable Flash memory and 4.25 kB of internal data RAM. The device integrates a 12-bit ADC supporting up to 200 ksps, 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 supports an industrial temperature range of -40°C to +125°C.

Feature Summary

• Integrated high-speed 8051 core with pipelined architecture for efficient instruction execution
• On-chip debug circuitry enabling full-speed non-intrusive in-system debugging without external emulators
• Comprehensive analog subsystem featuring a 12-bit ADC and dual programmable comparators
• Robust connectivity options with hardware-enhanced CAN, LIN, UART, SMBus, and SPI controllers

Applications

• Industrial control systems requiring robust communication protocols
• Automotive embedded applications meeting AEC-Q100 qualification standards
• Smart metering and instrumentation utilizing precise analog signal acquisition
• Embedded motor control and power management solutions

Procurement Notes

Verify the specific suffix 'IMR' corresponds to the tape-and-reel packaging variant rather than the tube-packaged 'IM' version. Confirm that the component meets RoHS3 compliance requirements for your assembly process. Ensure the ordering quantity aligns with the reel specifications provided by the distributor. Cross-reference the datasheet revision to confirm pinout and electrical characteristics match your design intent.

Selection Notes

Select this component when a complete mixed-signal solution is required within a compact 32-pin footprint. It is suitable for designs needing simultaneous high-speed digital processing and precision analog measurement capabilities. Consider this part if automotive reliability or wide operating voltage ranges are critical constraints. Evaluate the available I/O count against the specific peripheral requirements of the target application.

Part Context

This microcontroller belongs to the C8051F50x series, which represents a fully integrated system-on-chip approach. The family combines a standard 8051-compatible CPU with extensive on-chip peripherals, reducing the need for external support components. This integration simplifies board layout and lowers overall system cost while maintaining high performance and flexibility for diverse embedded applications.

Replacement Considerations

Consult the official datasheet for cross-reference information regarding newer generations or alternative packages within the same manufacturer's portfolio. Verify pin compatibility and software register mapping before substituting any other MCU models. Check for any end-of-life notifications or recommended upgrades for legacy components.