C8051F902-D-GU

Overview

The C8051F902-D-GU is an 8-bit microcontroller from the Silicon Labs C8051F90x series, featuring a CIP-51 core with up to 25 MIPS throughput at a 25 MHz clock. It integrates 8 kB of in-system programmable Flash memory and 768 bytes of RAM. The device supports a supply voltage range of 0.9 V to 3.6 V, including one-cell mode operation down to 0.9 V via a built-in DC-DC converter. Key peripherals include a 12-bit SAR ADC with up to 75 ksps throughput, two comparators, and multiple digital interfaces such as SMBus, SPI, and UART. It operates within a temperature range of –40 °C to +85 °C.

Feature Summary

• Ultra-low power architecture with sleep modes consuming as low as 10 nA for memory retention.
• Integrated 12-bit analog-to-digital converter with auto-averaging accumulator and burst mode capabilities.
• Built-in DC-DC converter enabling efficient operation in single-cell battery applications.
• High-speed pipelined CIP-51 core executing up to 70% of instructions in one or two system clocks.

Applications

• Single-cell battery powered devices
• Portable medical equipment
• Industrial sensor nodes

Procurement Notes

Verify the specific suffix 'D' indicates the QSOP package variant when sourcing. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Check for obsolescence notices or product change notifications regarding this specific part number to ensure long-term availability for production runs.

Selection Notes

Select this component for designs requiring high precision analog acquisition alongside low-power digital processing. The integrated DC-DC converter makes it suitable for single-cell lithium battery systems where voltage regulation efficiency is critical. Ensure the application utilizes the available GPIO count and peripheral set, specifically the 12-bit ADC resolution and dual comparators, to maximize hardware utilization.

Part Context

This device belongs to the C8051F9xx family of mixed-signal microcontrollers designed for cost-sensitive, battery-operated applications. It combines a standard 8051 instruction set with modern silicon features like crossbar logic and on-chip debug. The F902 variant specifically offers reduced Flash capacity compared to the F912 sibling while maintaining identical analog performance and power management features.

Replacement Considerations

The C8051F912-D-GU serves as a direct pin-compatible substitute offering increased Flash memory capacity. Other members of the C8051F90x series may be considered if different memory configurations are acceptable.