C8051F586-IQ

Overview

The C8051F586-IQ is an automotive-qualified, mixed-signal ISP Flash MCU from Silicon Labs. It features a high-speed 8051 core operating at up to 50 MHz with pipelined architecture. The device includes 96 kB of banked Flash memory and 8448 bytes of internal data RAM (256 + 8192 XRAM). Key peripherals include a 12-bit ADC with up to 32 external inputs, three comparators, CAN 2.0 and LIN 2.1 controllers, two UARTs, SMBus, and SPI. It operates on a supply voltage of 1.8 V to 5.25 V and supports a temperature range of –40 °C to +125 °C in a 48-pin QFP/QFN package.

Feature Summary

• Automotive-grade qualification supporting extended temperature operation up to 125 °C
• Integrated CAN 2.0 and LIN 2.1 controllers requiring no external crystal
• On-chip debug circuitry enabling full-speed, non-intrusive in-system debugging
• High-speed 8051 core with pipelined instruction execution for efficient processing

Applications

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

Procurement Notes

Verify the specific suffix 'IQ' corresponds to the 48-pin QFP/QFN package variant as defined in the official datasheet ordering information. Confirm that the component meets AEC-Q100 standards if automotive compliance is required for the target application. Check current availability status as this family may be subject to end-of-life notices.

Selection Notes

Select this model when automotive reliability and CAN/LIN communication are necessary without external oscillators. Ensure the design utilizes the 48-pin footprint compatible with the IQ suffix. Consider the 96 kB Flash capacity against application code size requirements and verify power consumption profiles within the specified 1.8 V to 5.25 V operating range.

Part Context

This microcontroller belongs to the C8051F58x/F59x mixed-signal ISP Flash MCU family. It shares architectural similarities with other members like the C8051F581 and C8051F586-IM but differs in package type and specific peripheral configurations. The family emphasizes high integration with analog peripherals and digital interfaces suitable for complex embedded environments.

Replacement Considerations

Silicon Labs recommends the EFM8BB31F64I-QFN32 as a replacement for related models in this series. Verify pinout compatibility and software migration efforts before substituting.