C8051F524A-IM

Overview

The C8051F524A-IM is an obsolete 8-bit microcontroller from the Silicon Labs C8051F52x family, featuring a high-speed CIP-51 core operating at up to 25 MHz. It integrates 4 kB of in-system programmable Flash memory and 256 bytes of internal RAM within a compact 10-pin DFN package. The device includes a 12-bit ADC with up to 200 ksps throughput, a programmable comparator, and multiple digital peripherals such as SPI, UART, and LIN controllers. Designed for automotive applications, it supports a supply voltage range of 2.0 V to 5.25 V and operates across a temperature range of –40 °C to +125 °C.

Feature Summary

• Features a pipelined CIP-51 core delivering up to 25 MIPS throughput with expanded interrupt handling capabilities.
• Integrates a 12-bit analog-to-digital converter with programmable throughput and data-dependent windowed interrupts.
• Includes on-chip debug circuitry enabling full-speed, non-intrusive in-system debugging without external emulators.
• Supports flexible clock sources including a high-precision internal oscillator and external crystal or RC options.

Applications

• Automotive embedded systems requiring AEC-Q100 compliance
• Industrial control units utilizing LIN bus communication
• Sensor interface modules employing 12-bit ADC conversion
• Low-pin-count embedded devices needing integrated debug

Procurement Notes

This component is officially obsolete and no longer manufactured by Silicon Labs. Verification of availability should focus on surplus distributors rather than direct procurement. Confirm that replacement parts maintain pin compatibility and functional equivalence for existing designs. Review product change notices for any packaging or labeling updates prior to integration into new hardware.

Selection Notes

Select this part only for legacy system maintenance where form factor constraints match the 10-pin DFN footprint. Evaluate the limited I/O count and memory size against current application requirements. Consider the absence of active manufacturer support when planning long-term production lifecycles. Verify that the 25 MHz maximum speed suffices for real-time processing needs without upgrading to higher-performance families.

Part Context

The C8051F524A-IM belongs to the C8051F52x series, which provides mixed-signal capabilities within a small package. This series emphasizes automotive qualification and integrated analog peripherals. It shares architectural similarities with the C8051F53x family but differs in specific peripheral configurations and memory sizes. The device represents a specialized solution for cost-sensitive, space-constrained automotive applications.

Replacement Considerations

Public confirmed substitute: C8051F520-C-IM. Verify pinout compatibility and software migration requirements before transitioning to alternative components within the same family or newer generations.

FAQ

Is the C8051F524A-IM suitable for new designs?

No, the datasheet explicitly states 'Not Recommended for New Designs' due to its obsolete status.

What is the maximum throughput of the integrated ADC?

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

Does the device require an external emulator for debugging?

No, it features on-chip debug circuitry that allows full-speed, non-intrusive in-system debugging without an emulator.