C8051F536-C-IMR

Overview

The C8051F536-C-IMR is an automotive-grade, fully static 8-bit microcontroller from the Silicon Labs C8051F52x/F53x family. It features a high-speed CIP-51 core operating at up to 25 MHz with 25 MIPS throughput. The device integrates 2 kB of ISP Flash memory and 256 bytes of internal data RAM. Key analog peripherals include a 12-bit ADC with programmable throughput up to 200 ksps, a programmable comparator, and built-in voltage references. Digital interfaces comprise hardware SPI, UART, and a LIN 2.1 controller. It operates on a supply voltage of 2.0 to 5.25 V and supports AEC-Q100 qualification for temperatures ranging from -40°C to +125°C.

Feature Summary

• Automotive qualified to AEC-Q100 standards with extended temperature operation up to 125°C
• Integrated LIN 2.1 controller supporting both master and slave modes without requiring an external crystal
• On-chip debug circuitry enabling full-speed, non-intrusive in-system debugging without external emulators
• High-precision internal oscillator with ±0.5% accuracy suitable for UART and LIN-Master operations

Applications

• Motor control systems
• Sensor interface circuits
• Parking assistance modules
• Seat position and adjustment controllers
• Fluid level monitoring devices

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm that the specific ordering suffix matches the required package type and temperature grade. Check current lifecycle status as this series may be designated as not recommended for new designs. Ensure compatibility with existing development tools and verify all electrical specifications against the latest official datasheet revision before finalizing procurement orders.

Selection Notes

Select this component when automotive reliability and LIN bus connectivity are primary requirements. The integrated 12-bit ADC and comparator reduce external component count for signal conditioning tasks. Consider the limited 2 kB Flash capacity for simpler control algorithms. Evaluate the 256-byte RAM constraint for complex data processing needs. Verify that the QFN-20 package dimensions fit within the target PCB layout constraints.

Part Context

This microcontroller belongs to the C8051F52x/F53x family, which bridges traditional 8051 architecture with modern mixed-signal integration. The CIP-51 core enhances standard 8051 performance through pipelined instruction execution. The family emphasizes system-level integration by combining analog peripherals, digital interfaces, and flash memory on a single die, targeting cost-sensitive embedded applications.

Replacement Considerations

Public confirmed substitute part numbers: EFM8BB51F8I-C-QFN20R.