C8051F854-C-IMR

Overview

The C8051F854-C-IMR is an 8-bit microcontroller from the Silicon Labs C8051F85x family, featuring a High-Speed CIP-51 core with up to 25 MIPS throughput at a 25 MHz clock. It integrates 4 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 operating at 200 ksps, two analog comparators, and multiple communication peripherals including UART, I2C/SMBus, and SPI. It operates on a supply voltage of 2.2 V to 3.6 V within a temperature range of -40 °C to +125 °C.

Feature Summary

• High-speed pipelined CIP-51 core compatible with standard 8051 instruction sets
• Integrated 12-bit ADC supporting burst mode and internal/external voltage references
• On-chip debug circuitry enabling full-speed non-intrusive system debugging
• Programmable Counter Array (PCA) with hardware kill/safe state capability

Applications

• Industrial control systems requiring robust analog signal processing
• Battery-powered devices utilizing low-power oscillators and power modes
• Embedded applications needing precise timing via PCA PWM generation
• Sensor interfaces leveraging high-resolution ADC and comparator inputs

Procurement Notes

Verify component authenticity through authorized Silicon Labs distributors or direct manufacturer channels. Confirm the specific suffix matches the required package and temperature grade. Review the latest datasheet revision for any errata or design changes. Ensure compatibility with existing development tools and programming interfaces before finalizing procurement decisions.

Selection Notes

Select this model when a cost-effective 8-bit solution with integrated analog peripherals is required. Consider the C8051F85x family for designs needing moderate Flash capacity and extensive GPIO flexibility. Evaluate power consumption requirements against the specified idle and stop mode currents. Ensure the 2.2 V to 3.6 V supply range aligns with the target system's power architecture.

Part Context

This component belongs to the C8051F85x/86x series of low-cost 8-bit MCUs. It shares architectural similarities with other members of the C8051F family but offers specific memory and peripheral configurations. The device is designed for mixed-signal applications, combining digital control capabilities with analog conversion and comparison functions on a single chip.

Replacement Considerations

Consult the official Silicon Labs ordering guide for verified substitute part numbers within the same family. Ensure any replacement maintains compatibility with the CIP-51 core and pinout configuration. Verify that alternative components meet the same electrical specifications and temperature ranges.