C8051F545-IMR

Overview

The C8051F545-IMR is an automotive-grade, mixed-signal ISP Flash microcontroller from the Silicon Labs C8051F54x family. It features a high-speed 8051 core operating at up to 50 MHz (50 MIPS) with pipelined architecture. The device integrates 16 kB of in-system programmable Flash memory and 1280 bytes of internal data RAM. Key peripherals include a 12-bit ADC supporting up to 200 ksps, two comparators, a LIN 2.1 controller, UART, SMBus, SPI, and four general-purpose timers. It operates on a supply voltage range of 1.8 V to 5.25 V and supports -40 °C to +125 °C temperatures.

Feature Summary

• Automotive qualified to AEC-Q100 standards for reliable operation in harsh environments
• Integrated LIN 2.1 controller enabling master and slave communication without external crystals
• On-chip debug circuitry providing full-speed, non-intrusive in-system debugging capabilities
• Complete system-on-a-chip solution with integrated voltage regulator, power-on reset, and watchdog timer

Applications

• Automotive body control modules and sensor interfaces
• Industrial motor control and automation systems
• LIN bus network nodes in vehicle architectures
• General-purpose embedded applications requiring mixed-signal processing

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific suffix matches the required reel packaging format. Check for current lifecycle status as this series may be subject to obsolescence notices. Ensure compliance with RoHS directives and relevant automotive quality certifications before integration into production designs.

Selection Notes

Select this variant when automotive qualification and LIN connectivity are mandatory requirements. Compare pin counts and peripheral sets against other members of the C8051F54x family to ensure optimal fit for I/O density needs. Evaluate the 16 kB Flash capacity against application firmware size constraints. Consider the 32-pin QFN package dimensions for PCB layout compatibility.

Part Context

This component belongs to the C8051F54x mixed-signal MCU family, designed for automotive and industrial markets. It shares architectural similarities with the C8051F58x/59x and C8051F55x/56x/57x series, offering pin-for-pin compatibility within certain package groups. The family emphasizes high integration levels to reduce external component count and board space.

Replacement Considerations

Consult official Silicon Labs documentation for confirmed substitute part numbers. Verify that any replacement maintains identical package footprint, pinout configuration, and electrical specifications. Ensure the alternative device meets the same automotive qualification standards if applicable.