C8051F852-C-IMR

Overview

The C8051F852-C-IMR is an 8-bit microcontroller from the Silicon Labs C8051F85x family, featuring a High-Speed CIP-51 core operating at up to 25 MHz. It integrates 8 kB of in-system programmable Flash memory and 512 Bytes of RAM. The device includes a 12-bit ADC with up to 16 channels, two analog comparators, and multiple communication peripherals including UART, I2C/SMBus, and SPI. Powered by a 2.2 V to 3.6 V supply, it operates within a temperature range of -40 °C to +125 °C and is housed in a 20-pin QFN package.

Feature Summary

• High-speed CIP-51 core delivering up to 25 MIPS throughput with standard 8051 instruction set compatibility
• Integrated on-chip debug circuitry enabling full-speed, non-intrusive in-system debugging without external emulators
• Flexible I/O architecture with up to 18 pins, 5 V tolerance, and Crossbar-enabled peripheral routing
• Comprehensive analog subsystem featuring a 12-bit ADC, internal/external voltage reference options, and low-power comparators

Applications

• Industrial control systems requiring robust 8-bit processing and analog signal acquisition
• Battery-powered devices utilizing low-power oscillators and efficient power management modes
• Sensor interfaces leveraging high-resolution ADCs and configurable analog comparators
• Embedded applications needing reliable serial communication via UART, SPI, or SMBus protocols

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific suffix matches the required temperature grade and package variant. Review the latest datasheet revision for any errata or design warnings. Ensure compliance with RoHS standards and AEC-Q100 qualification if automotive application is intended. Validate pinout compatibility during PCB layout finalization.

Selection Notes

Select this MCU for designs prioritizing cost-effective 8-bit performance with integrated analog capabilities. Consider the CIP-51 core for enhanced throughput compared to traditional 8051 architectures. Evaluate the 20-pin QFN package constraints against available board space. Assess power consumption requirements across different clock frequencies and sleep modes. Verify that the 2.2 V to 3.6 V supply range aligns with the system power architecture.

Part Context

This component belongs to the C8051F85x/86x family of low-cost 8-bit MCUs from Silicon Laboratories. The series is characterized by its mixed-signal integration, combining digital processing with analog peripherals like ADCs and comparators. It targets applications requiring moderate processing power, extensive I/O flexibility, and reliable communication interfaces in a compact form factor.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult official Silicon Labs resources for potential cross-references or next-generation alternatives.