C8051F561-IQR

Overview

The C8051F561-IQR is an 8-bit mixed-signal microcontroller from the Silicon Labs C8051F56x family, housed in a 32-pin QFP package. It features a high-speed CIP-51 core operating at up to 50 MHz with 50 MIPS throughput. The device includes 32 kB of in-system programmable Flash memory and 2304 bytes of internal data RAM (256 + 2048 XRAM). Key analog peripherals consist of a 12-bit ADC supporting up to 200 ksps and two comparators. Digital interfaces include CAN 2.0, LIN 2.1, UART, SMBus, and SPI. It operates on a supply voltage of 1.8 V to 5.25 V and supports an industrial temperature range of –40 °C to +125 °C.

Feature Summary

• Integrated 12-bit ADC with selectable gain and built-in temperature sensor for precise analog signal acquisition.
• On-chip debug circuitry enabling full-speed, non-intrusive in-system debugging without external emulators.
• Hardware-enhanced serial communication controllers including CAN 2.0 and LIN 2.1 requiring no external crystal.
• Pipelined CIP-51 architecture executing 70% of instructions in one or two system clocks for high performance.

Applications

• Industrial control systems requiring robust communication protocols like CAN and LIN.
• Automotive embedded applications meeting AEC-Q100 qualification standards.
• Mixed-signal data acquisition systems utilizing high-resolution analog-to-digital conversion.
• Battery-powered devices benefiting from low-power stop mode operation.

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific suffix matches the required package type and temperature rating. Review the latest datasheet revision for any errata or design changes. Ensure compatibility with existing development tools and programming interfaces before integration into production workflows.

Selection Notes

Select this model when a balance of high-speed processing and extensive analog capabilities is required within a compact 32-pin footprint. Consider the C8051F56x series for designs needing integrated CAN and LIN controllers without external transceivers. Evaluate power consumption requirements against the typical operating current specifications at the target clock frequency.

Part Context

This component belongs to the C8051F55x/56x/57x mixed-signal ISP Flash MCU family. These devices are designed for applications demanding high integration and reliability. The family shares common architectural features such as the CIP-51 core and crossbar logic, differing primarily in memory size and pin count configurations across the various sub-models.

Replacement Considerations

Consult the official datasheet for compatible alternatives within the same family. Verify pinout compatibility and peripheral availability when substituting models. Check for any updates regarding end-of-life status or recommended design replacements issued by the manufacturer.