C8051F527-IM

Overview

The C8051F527-IM is an automotive-grade 8-bit microcontroller from the Silicon Labs C8051F52x 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 data RAM. Key peripherals include a 12-bit ADC with 200 ksps throughput, a programmable comparator, and a built-in temperature sensor. Communication interfaces consist of hardware SPI, UART, and a LIN 2.1 controller. It operates on a supply voltage of 2.0 to 5.25 V and supports a wide temperature range of -40°C to +125°C.

Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for robust industrial and automotive environments.
• Integrated 12-bit analog-to-digital converter with programmable throughput and windowed interrupt generation 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 sensor interface modules
• Industrial motor control systems
• LIN bus communication nodes
• Temperature monitoring applications

Procurement Notes

Verify the specific package variant (DFN-10, QFN-20, or TSSOP-20) required for your design, as the base part number covers multiple packages. Confirm that the 2 kB Flash capacity meets application requirements, as other variants in the F52x series offer different memory sizes. Ensure the development environment supports the C2 interface for programming and debugging this specific silicon revision.

Selection Notes

Select the C8051F527-IM when automotive reliability and integrated analog peripherals are prioritized over higher processing power. This component is suitable for designs requiring precise analog signal acquisition via the 12-bit ADC alongside standard digital communication protocols like SPI and UART. Consider alternative parts within the C8051F52x family if larger memory footprints or additional I/O lines are necessary for the target application.

Part Context

This component belongs to the C8051F52x/F53x family of fully mixed-signal System-on-a-Chip microcontrollers. These devices are designed to provide high integration levels in small form factors, combining a fast 8051 CPU with extensive analog and digital peripherals. The family targets cost-sensitive yet performance-critical applications in both consumer electronics and automotive sectors.

Replacement Considerations

Consult the manufacturer's product selection guide for direct pin-compatible alternatives within the C8051F52x series that offer different memory configurations. Verify compatibility with existing firmware and peripheral settings when migrating between variants with differing Flash sizes or package types.

FAQ

Does the C8051F527-IM require an external crystal for LIN Master operation?

No, the device features a high-precision internal oscillator with ±0.5% accuracy 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 (ADC) has a programmable throughput of up to 200 ksps.