C8051F855-C-GM

Overview

The C8051F855-C-GM is an 8-bit microcontroller from the Silicon Labs C8051F85x/86x 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 (256 + 256). The device includes a 12-bit ADC with up to 16 input channels, two analog comparators, and communication peripherals including UART, I2C/SMBus, and SPI. Powered by a 2.2 V to 3.6 V supply, it operates within -40 °C to +85 °C 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 with up to 16 input channels
• On-chip debug circuitry enabling full-speed, non-intrusive system debugging
• Flexible general-purpose I/O with 5 V tolerance and configurable crossbar

Applications

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

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific suffix matches the required temperature grade (-Gx for commercial) and package type. Check current lifecycle status as this series may be marked Not Recommended for New Designs. Ensure ESD handling protocols are followed during storage and assembly.

Selection Notes

Select this model when a compact 8-bit MCU with integrated mixed-signal capabilities is required. The C8051F855 variant specifically offers 8 kB Flash and 512 Bytes RAM. Consider the AEC-Q100 qualification if automotive reliability standards are necessary. Evaluate pin count and peripheral needs against the 20-pin QFN footprint constraints.

Part Context

This component belongs to the C8051F85x/86x low-cost 8-bit MCU family. It shares architectural similarities with other members like the C8051F850 but differs in memory configuration and specific peripheral availability. The family emphasizes high integration to reduce external component counts in embedded designs.

Replacement Considerations

Public confirmed substitute part numbers: C8051F850-C-GM, C8051F851-C-GM, C8051F852-C-GM, C8051F853-C-GM, C8051F854-C-GM, C8051F855-C-GMR, C8051F860-C-GM, C8051F861-C-GM, C8051F862-C-GM, C8051F863-C-GM, C8051F864-C-GM, C8051F865-C-GM.