C8051F854-C-IM

Overview

The C8051F854-C-IM is an 8-bit microcontroller from the Silicon Labs C8051F85x/86x family, utilizing a High-Speed CIP-51 core with up to 25 MIPS throughput at a 25 MHz clock. It features 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 such as UART, I2C/SMBus, and SPI. Operating voltage ranges from 2.2 V to 3.6 V, with an industrial temperature range of –40 °C to +125 °C.

Feature Summary

• High-speed CIP-51 microcontroller core with pipelined instruction architecture
• On-chip debug circuitry for full speed, non-intrusive in-system debugging
• 12-bit Analog-to-Digital Converter with up to 16 input channels
• Integrated internal low-power oscillators for low supply current operation

Applications

• Industrial control systems requiring robust environmental tolerance
• Battery-powered devices benefiting from low supply current modes
• Sensor interface applications utilizing integrated ADC and comparators
• Embedded systems needing on-chip debug capabilities without external emulators

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific suffix matches the required package and temperature grade. Check for official notices regarding the Not Recommended for New Designs status to ensure long-term project viability. Validate datasheet revisions against the manufacturing date code.

Selection Notes

Select this component when an 8-bit MCU with integrated analog peripherals and debug features is required within a 2.2 V to 3.6 V supply range. Consider the industrial temperature rating for harsh environments. Evaluate the 8 kB Flash limit against application code size requirements. Assess if the CIP-51 core performance meets real-time processing needs compared to higher-speed alternatives.

Part Context

This part belongs to the C8051F85x/86x series, which offers low-cost 8-bit MCU solutions with mixed-signal capabilities. The family emphasizes high integration by combining digital processing with analog functions like ADCs and comparators on a single chip. This approach reduces external component count and simplifies board design for cost-sensitive embedded applications.

Replacement Considerations

Official documentation lists the C8051F854-C-IM as Not Recommended for New Designs. Verify availability of alternative parts within the same Silicon Labs portfolio that maintain compatible pinouts and peripheral sets. Ensure any substitute supports the required industrial temperature range and voltage specifications.