C8051F527A-IMR

Overview

The C8051F527A-IMR is an automotive-grade microcontroller from the Silicon Labs 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 2 kB of in-system programmable Flash memory and 256 bytes of internal RAM. Key peripherals include a 12-bit ADC with 200 ksps throughput, a programmable comparator, and a LIN 2.1 controller. It operates within a supply voltage range of 2.0 V to 5.25 V and supports temperatures from -40 °C to +125 °C.

Feature Summary

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

Applications

• Automotive sensor interface modules
• LIN bus network nodes
• Motor control systems
• Industrial monitoring devices

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm that the part meets current AEC-Q100 automotive qualification requirements. Check datasheet revisions for any updates regarding electrical characteristics or pinout definitions before finalizing procurement specifications.

Selection Notes

Select this component for applications requiring automotive reliability and integrated LIN communication. Ensure the design accommodates the 2 kB Flash size and 256-byte RAM limit. Verify that the 12-bit ADC resolution and 200 ksps speed meet signal processing requirements. Consider the 2.0 V to 5.25 V supply range for power budgeting.

Part Context

This MCU belongs to the C8051F52x/F53x series, designed for high integration in small form factors. It combines a pipelined 8051 core with extensive analog and digital peripherals. The series is noted for its compact packages, such as the 10-pin DFN, making it suitable for space-constrained automotive and industrial designs.

Replacement Considerations

The datasheet explicitly marks the C8051F52x/F52xA/F53x/F53xA series as 'Not Recommended for New Designs'. Evaluate alternative automotive MCUs from the manufacturer's current portfolio that offer similar performance and interfaces while ensuring long-term availability.

FAQ

Does the C8051F527A-IMR require an external crystal for LIN Master operation?

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

What is the maximum throughput of the on-chip ADC?

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