C8051F902-GMR

Overview

The C8051F902-GMR is an 8-bit microcontroller from the Silicon Labs C8051F9xx series, featuring a high-speed 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 includes a 12-bit SAR ADC with up to 75 ksps throughput, two comparators, and a built-in DC-DC converter supporting operation from 0.9 V to 3.6 V. Key peripherals include hardware SMBus, dual SPI, UART, four general-purpose timers, and a PCA with PWM capabilities. It operates within a temperature range of –40 °C to +85 °C and is housed in a 24-pin QFN package.

Feature Summary

• Ultra-low power architecture with sleep modes consuming as low as 10 nA and active current of 160 uA/MHz.
• Integrated 12-bit SAR ADC with auto-averaging accumulator and programmable window detector for precise analog sensing.
• Built-in DC-DC converter enables single-cell battery operation down to 0.9 V while maintaining stable internal voltages.
• High-speed CIP-51 core executes most instructions in one or two system clocks for efficient processing.

Applications

• Single or dual battery powered portable devices
• Low-power sensor nodes requiring precise analog measurement
• Battery management systems utilizing the integrated voltage monitors
• Industrial control applications needing robust I/O and communication interfaces

Procurement Notes

Verify the specific suffix 'GMR' corresponds to the tape and reel packaging format required for your assembly line. Confirm that the 24-pin QFN footprint matches your PCB design guidelines. Check for any recent Product Change Notices (PCNs) regarding manufacturing site changes or material updates. Ensure the component meets RoHS3 compliance requirements for your target market regulations.

Selection Notes

Select this part if your application requires ultra-low standby currents and operation below 1.8 V using a single cell. The integrated DC-DC converter simplifies power supply design for battery-operated systems. Choose this model over variants with less Flash or lower ADC resolution if code space or analog precision is critical. Verify that the 24-pin package fits your spatial constraints compared to other available packages like QSOP.

Part Context

This component belongs to the C8051F9xx family of mixed-signal microcontrollers designed for extreme low-power applications. It shares the CIP-51 core and peripheral set with siblings like the C8051F912 but differs in Flash size and specific power features. The GMR suffix indicates a specific packaging variant within the broader C8051F product line, targeting automated surface-mount assembly processes.

Replacement Considerations

Public confirmed substitute part numbers: None listed in verified documentation.