C8051F854-C-IU

Overview

The C8051F854-C-IU 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. 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. It operates on a supply voltage of 2.2 V to 3.6 V within an industrial temperature range of -40°C to +125°C.

Feature Summary

• High-Speed CIP-51 Core: Pipelined instruction architecture delivering up to 25 MIPS throughput using the standard 8051 instruction set.
• On-Chip Debug Circuitry: Facilitates full-speed, non-intrusive in-system debugging without requiring an emulator.
• Mixed-Signal Peripherals: Integrates a 12-bit ADC with up to 16 channels and two analog comparators with programmable hysteresis.
• Flexible I/O Architecture: Features up to 18 pins with 5 V tolerance and Crossbar-enabled pin mapping.

Applications

• Industrial control systems
• Medical devices
• Smart instrumentation

Procurement Notes

Verify the specific suffix '-IU' confirms the industrial temperature grade (-40°C to +125°C) and QSOP-24 package. Confirm RoHS compliance status for the current production lot. Check for any active Product Change Notifications (PCN) or Errata sheets relevant to revision 1.3 before finalizing procurement orders.

Selection Notes

Select this component when a low-cost 8-bit MCU with mixed-signal capabilities is required. Ensure the application fits within the 2.2 V to 3.6 V supply range. Verify that the 4 kB flash and 512 bytes RAM meet program storage needs. Consider the QSOP-24 package dimensions against available PCB space constraints.

Part Context

This part belongs to the C8051F85x/86x family, which offers up to 8 kB of flash memory. The C8051F854 variant specifically provides 4 kB of flash. The family is designed for applications requiring low latency and mixed-signal processing, utilizing the efficient CIP-51 core architecture for enhanced performance over traditional 8051 designs.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult Silicon Labs for potential obsolescence notices or newer generation alternatives if this part is discontinued.

FAQ

What is the maximum system clock frequency for the C8051F854-C-IU?

The maximum system clock frequency is 25 MHz, allowing for up to 25 MIPS throughput.

Does the C8051F854-C-IU include an internal voltage reference for the ADC?

Yes, the device supports both an internal voltage reference and an external voltage reference for the 12-bit ADC.