C8051F854-C-GM

Overview

The C8051F854-C-GM is a mixed-signal 8-bit microcontroller from the 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, four 16-bit timers, and a Programmable Counter Array. Communication interfaces include UART, I2C/SMBus, and SPI. It operates on a 2.2 V to 3.6 V supply and is housed in a 20-pin QFN package.

Feature Summary

• High-performance pipelined CIP-51 core delivering up to 25 MIPS throughput
• Integrated 12-bit Analog-to-Digital Converter supporting up to 16 input channels
• On-chip debug circuitry enabling full-speed non-intrusive system debugging
• Low-power internal oscillators including a calibrated 24.5 MHz High-Frequency Oscillator

Applications

• Battery chargers
• Electronic toys and games
• Motor control systems
• Optical communications devices

Procurement Notes

Verify the specific suffix 'GM' corresponds to the commercial temperature range (-40°C to +85°C) and QFN-20 package. Confirm that the part status is Not Recommended for New Designs (NRND) before finalizing procurement plans. Ensure compatibility with existing design infrastructure given the end-of-life recommendation.

Selection Notes

Select this component when an 8-bit MCU with integrated analog peripherals is required. The C8051F854 variant provides 8 kB of Flash and 512 Bytes of RAM. Consider the -IM suffix if industrial temperature ratings are necessary. Evaluate the AEC-Q100 qualification status for automotive reliability requirements.

Part Context

This device belongs to the Silicon Labs C8051F85x/86x family of low-cost 8-bit MCUs. The family shares a common architecture but varies in memory size and pin count. The C8051F854 specifically offers 8 kB Flash within the 20-pin QFN form factor, distinguishing it from smaller variants like the F850 or larger packages in the series.

Replacement Considerations

Public confirmed substitute part numbers: EFM8BB51F8I-C-QFN20R.