C8051F568-IMR

Overview

The C8051F568-IMR is an automotive-grade mixed-signal ISP Flash MCU from the C8051F56x family. It features a high-speed CIP-51 core operating at up to 50 MIPS with a 50 MHz clock. The device integrates 32 kB of in-system programmable Flash memory and 2304 bytes of internal data RAM. Key analog peripherals include a 12-bit ADC supporting up to 200 ksps, two comparators, and an on-chip temperature sensor. Digital interfaces encompass CAN 2.0, LIN 2.1, UART, SMBus, and SPI. It operates within a supply voltage range of 1.8 V to 5.25 V and supports a wide industrial temperature range of –40 °C to +125 °C.

Feature Summary

• Automotive qualified compliance with AEC-Q100 standards for robust operation in demanding environments.
• Integrated CAN 2.0 and LIN 2.1 controllers enabling direct network connectivity without external transceivers or crystals.
• High-performance pipelined CIP-51 architecture delivering up to 50 MIPS throughput with efficient instruction execution.
• Comprehensive mixed-signal integration including a 12-bit ADC, dual comparators, and on-chip debug circuitry.

Applications

• Automotive body control modules and gateway applications
• Industrial motor control systems requiring LIN/CAN communication
• Embedded sensors and actuators with analog signal processing needs
• In-circuit programming and field upgradeable firmware systems

Procurement Notes

Verify component authenticity through authorized Silicon Labs distributors or certified partners. Confirm that the specific ordering suffix matches the required package type and temperature grade. Ensure design compliance with AEC-Q100 requirements if deployed in automotive contexts. Review the latest datasheet revision for any errata or specification updates prior to finalizing procurement orders.

Selection Notes

Select this model when automotive qualification and integrated LIN/CAN capabilities are mandatory. The 32 kB Flash size suits applications requiring substantial code storage for complex protocols. Verify pin compatibility with existing PCB layouts as it utilizes a 40-pin QFN package. Consider power consumption profiles in stop mode if battery-operated functionality is part of the system design.

Part Context

This component belongs to the C8051F55x/56x/57x family of mixed-signal MCUs. It shares architectural similarities with the C8051F50x series but offers enhanced automotive features and specific peripheral configurations. The device represents a System-on-Chip solution designed to reduce bill-of-materials by integrating essential analog and digital functions onto a single silicon die.

Replacement Considerations

The C8051F568-IMR is marked as Not Recommended for New Designs. Potential substitutes within the same family include other C8051F56x variants with compatible pinouts and memory sizes. Engineers should evaluate newer Silicon Labs microcontroller families for long-term availability and updated feature sets before adopting legacy components.

FAQ

Does the C8051F568-IMR require an external crystal for CAN and LIN operation?

No, the device includes an internal 24 MHz oscillator with ±0.5% accuracy specifically designed to support CAN and master LIN operation without requiring an external crystal.

What is the maximum sampling rate of the integrated ADC?

The 12-bit ADC supports a maximum sampling rate of up to 200 ksps.

Is the Flash memory reprogrammable in the field?

Yes, the Flash memory is in-system programmable (ISP) in 512-byte sectors, allowing for field upgrades and non-volatile data storage.