C8051F526-C-IM

Overview

The C8051F526-C-IM is an 8-bit microcontroller from the Silicon Labs C8051F52x family, featuring a high-speed CIP-51 core operating at up to 25 MHz. It integrates 2 kB of ISP Flash memory and 256 bytes of internal RAM. The device includes a 12-bit ADC with programmable throughput up to 200 ksps, a programmable comparator, and a built-in temperature sensor. Digital peripherals 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 10-pin DFN (3 x 3 mm) package.

Feature Summary

• High-performance 8051-compatible core with pipelined architecture delivering up to 25 MIPS throughput.
• Integrated 12-bit analog-to-digital converter with data-dependent windowed interrupt generation and selectable gain.
• On-chip debug circuitry enabling full-speed, non-intrusive in-system debugging without external emulators.
• Hardware support for LIN 2.1 communication protocols allowing master and slave operation without a crystal.

Applications

• Industrial control systems requiring robust analog signal processing
• Automotive electronics compliant with AEC-Q100 standards
• Sensor nodes utilizing integrated temperature sensing and ADC capabilities
• LIN bus network implementations in vehicle or industrial networks

Procurement Notes

Verify component authenticity through authorized Silicon Labs distributors. Confirm the specific suffix '-C-IM' corresponds to the 10-pin DFN package variant. Check for 'Not Recommended for New Designs' status in current datasheets before finalizing procurement plans. Ensure environmental compliance documentation matches project requirements.

Selection Notes

Select this model when a compact 10-pin footprint is required alongside LIN bus connectivity. Consider the 2 kB Flash limit for application complexity. Evaluate the 256-byte RAM constraint against stack and variable requirements. Verify that the 2.0 V minimum supply voltage aligns with system power rails.

Part Context

This component belongs to the C8051F52x/F53x family of mixed-signal microcontrollers. These devices are designed for applications needing high integration in small packages. The series combines standard 8051 compatibility with modern peripheral sets including ADCs, comparators, and serial interfaces. They target cost-sensitive embedded designs in industrial and automotive sectors.

Replacement Considerations

Silicon Labs recommends the C8051F520-C-IM as a substitute. Verify pinout and peripheral compatibility between the F526 and F520 variants before replacement. Review updated datasheets for any functional differences or feature reductions in the recommended alternative.

FAQ

Does the C8051F526-C-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 sampling rate of the integrated ADC?

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