C8051F524-C-IMR

Overview

The C8051F524-C-IMR is an automotive-qualified, high-speed 8051 microcontroller from Silicon Labs. It features a pipelined core delivering up to 25 MIPS at a 25 MHz system clock. The device integrates 4 kB of ISP Flash memory and 256 bytes of internal data RAM. Key peripherals include a 12-bit ADC with programmable throughput up to 200 ksps, a hardware SPI port, a UART serial port, and a LIN 2.1 controller. It operates within a supply voltage range of 2.0 V to 5.25 V and supports an industrial temperature range of –40 °C to +125 °C.

Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for extended temperature operation.
• Integrated 12-bit Analog-to-Digital Converter with programmable throughput and windowed interrupt generation.
• On-chip debug circuitry enabling full-speed, non-intrusive in-system debugging without external emulators.
• Hardware support for LIN 2.1 communication protocols including master and slave capabilities.

Applications

• Automotive embedded control systems
• Industrial sensor interfaces
• LIN bus network nodes

Procurement Notes

Verify the specific suffix '-C-IMR' against the manufacturer's current product selection guide to confirm availability status. Check for official Obsolescence Notices (PCN) as this family may be marked Not Recommended for New Designs. Ensure the package type matches the required PCB footprint and that the operating voltage aligns with the 2.0 V to 5.25 V specification.

Selection Notes

Select this component when automotive reliability and LIN bus integration are required alongside moderate processing speed. The 4 kB Flash limit suits applications with constrained code size. Consider the 256 byte RAM constraint for complex data handling tasks. Verify that the 12-bit ADC resolution and 200 ksps rate meet signal acquisition requirements.

Part Context

This part belongs to the C8051F52x/F53x family of mixed-signal microcontrollers. These devices utilize the CIP-51 architecture, which enhances standard 8051 performance through pipelining. The family is characterized by its comprehensive analog peripheral set and robust digital connectivity options designed for demanding environments.

Replacement Considerations

Consult the manufacturer's official substitution matrix for direct pin-compatible alternatives. Verify that any replacement maintains AEC-Q100 compliance if automotive usage is intended. Confirm that the substitute device offers equivalent or superior Flash/RAM capacity and peripheral functionality.

FAQ

Does the C8051F524-C-IMR 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 integrated ADC?

The 12-bit ADC supports a programmable throughput of up to 200 ksps.