C8051F855-C-GMR

Overview

The C8051F855-C-GMR is an 8-bit microcontroller from Silicon Labs, part of the C8051F85x/86x family. It features a high-speed CIP-51 core operating at up to 25 MHz. The device includes 2 kB of in-system programmable Flash memory and 256 bytes of RAM. It integrates a 12-bit ADC with up to 16 input channels, two analog comparators, and multiple communication interfaces including UART, I2C/SMBus, and SPI. The MCU operates on a supply voltage of 2.2 V to 3.6 V and is housed in a 20-pin QFN package.

Feature Summary

• High-speed CIP-51 core with pipelined architecture for efficient instruction execution
• Integrated 12-bit Analog-to-Digital Converter supporting up to 16 input channels
• On-chip debug circuitry enabling full-speed, non-intrusive system debugging without external emulators
• Flexible general-purpose I/O pins that are 5 V-tolerant and configurable via priority crossbar

Applications

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

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific suffix matches the required package and temperature grade. Check current availability status as this series may be subject to lifecycle changes. Ensure compliance with relevant RoHS directives and AEC-Q100 qualification requirements if applicable to your design specifications.

Selection Notes

Select this MCU for applications requiring low-cost 8-bit processing with mixed-signal capabilities. Consider the 2 kB Flash limit for firmware size constraints. Evaluate the 25 MHz clock speed against real-time processing needs. Verify that the 20-pin QFN package fits the board layout. Ensure the 2.2 V to 3.6 V supply range aligns with the system power design.

Part Context

This component belongs to the C8051F85x/86x family of low-cost 8-bit MCUs. These devices are designed as highly integrated mixed-signal system-on-chip solutions. They combine a standard 8051-compatible core with extensive peripheral sets. The family targets cost-sensitive embedded applications requiring analog interfacing and digital control.

Replacement Considerations

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