C8051F533A-IMR

Overview

The C8051F533A-IMR is an automotive and industrial qualified microcontroller from the C8051F52x/F53x family. It features a high-speed 8051 core operating at up to 25 MIPS with a 25 MHz system clock. The device includes 4 kB of ISP Flash memory, 256 bytes of internal data RAM, and a 12-bit ADC with programmable throughput up to 200 ksps. It supports supply voltages from 2.0 V to 5.25 V and operates within a temperature range of –40 °C to +125 °C.

Feature Summary

• Automotive-grade qualification compliant with AEC-Q100 standards for robust operation in demanding environments.
• Integrated 12-bit analog-to-digital converter with programmable throughput and built-in temperature sensor capabilities.
• On-chip debug circuitry enabling full-speed, non-intrusive in-system debugging without external emulators.
• Built-in LIN 2.1 controller supporting both master and slave modes without requiring an external crystal.

Applications

• Automotive body control modules
• Industrial sensor interface circuits
• LIN bus communication nodes

Procurement Notes

Verify the specific suffix 'IMR' corresponds to the tape-and-reel packaging variant when ordering. Confirm that the component meets the required AEC-Q100 grade specifications for your target application environment. Ensure compatibility with existing design tools as this series is marked not recommended for new designs.

Selection Notes

Select this part if your design requires automotive qualification and integrated LIN communication. Consider the limited Flash size and RAM capacity against your firmware requirements. Evaluate the 25 MHz maximum clock speed for timing constraints. Check package availability for the QFN or TSSOP form factors depending on board space limitations.

Part Context

This component belongs to the C8051F52x/F53x family of mixed-signal microcontrollers. These devices are designed for applications needing high integration in small packages. The family shares common peripherals including the CIP-51 core and analog blocks. This specific model represents the 4 kB Flash variant within the series.

Replacement Considerations

Silicon Labs recommends EFM8BB52F16I-QFN20 as a replacement for this end-of-life part. Verify pinout compatibility and peripheral mapping before substitution. Review the newer device's datasheet for updated feature sets and electrical characteristics.