C8051F533-IM

Overview

The C8051F533-IM is an automotive-grade, 8-bit microcontroller from the Silicon Labs C8051F52x/F53x family. It features a high-speed CIP-51 core operating at up to 25 MHz with 25 MIPS throughput. The device integrates 4 kB of ISP Flash memory and 256 bytes of internal data RAM. Key analog peripherals include a 12-bit ADC with programmable throughput up to 200 ksps, a built-in temperature sensor, and a programmable comparator. Digital interfaces comprise hardware SPI, UART, and a LIN 2.1 controller. It operates on a supply voltage of 2.0 V to 5.25 V and is housed in a 20-pin QFN package.

Feature Summary

• Automotive qualified to AEC-Q100 standards for extended temperature operation
• Integrated 12-bit ADC with windowed interrupt generator and temperature sensing
• On-chip debug circuitry enabling full-speed non-intrusive in-system debugging
• Hardware support for LIN 2.1 communication without external crystal

Applications

• Automotive sensor interface modules
• LIN bus network nodes
• Industrial control logic systems
• Motor control applications

Procurement Notes

Verify the specific suffix 'IM' corresponds to the 20-pin QFN package variant. Confirm that the component meets AEC-Q100 requirements if deploying in automotive environments. Check current lifecycle status as older silicon revisions may be subject to end-of-life notices. Ensure design compatibility with the 2.0 V to 5.25 V operating voltage range.

Selection Notes

Select this part when a robust 8051 architecture is required alongside integrated analog capabilities like a 12-bit ADC and comparators. It is suitable for designs needing LIN 2.1 connectivity without external crystals. Consider alternative pin counts or memory sizes within the F52x/F53x family if system requirements exceed the 4 kB Flash or 256 byte RAM limits.

Part Context

This component belongs to the C8051F52x/F53x series of mixed-signal System-on-Chip microcontrollers. These devices are designed to reduce component count by integrating standard digital peripherals with high-performance analog circuits. The family emphasizes ease of development through on-chip debug capabilities and flexible clocking options.

Replacement Considerations

EFM8BB52F16I-QFN20

FAQ

Does the C8051F533-IM require an external crystal for LIN Master operation?

No, the device includes a high-precision internal oscillator (24.5 MHz ±0.5%) that supports UART and LIN-Master operation without requiring an external crystal.

What is the maximum sampling rate of the onboard ADC?

The 12-bit Analog-to-Digital Converter has a programmable throughput of up to 200 ksps.