C8051F902-GM

Overview

The C8051F902-GM is an 8-bit microcontroller from Silicon Labs 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 and 768 bytes of RAM. The device supports a supply voltage range of 0.9 V to 3.6 V, utilizing a built-in DC-DC converter for single-cell operation. Key peripherals include a 12-bit SAR ADC with up to 75 ksps throughput, two comparators, and multiple digital interfaces including 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 and fast wake-up times.
• Integrated 12-bit analog-to-digital converter with programmable gain amplifier and auto-averaging accumulator.
• Built-in DC-DC converter enabling continuous operation from 0.9 V to 3.6 V using a single battery cell.
• High-speed 8051 core with pipelined instruction execution and flexible interrupt handling.

Applications

• Single or dual battery powered portable devices
• Low power sensor interface systems
• Battery-operated instrumentation

Procurement Notes

Verify the specific suffix 'GM' corresponds to the 24-pin QFN package and lead-free RoHS compliance. Confirm the revision level matches design requirements, as datasheet revisions may update electrical characteristics or errata. Ensure the 8 kB Flash variant is selected, distinct from the 16 kB F912 version. Check for any specific ordering restrictions or lifecycle status updates directly from Silicon Labs documentation.

Selection Notes

Select this component when a balance of high analog precision and ultra-low power consumption is required. The integrated DC-DC converter makes it suitable for applications requiring wide input voltage ranges from a single cell. The 12-bit ADC resolution and on-chip PGA are advantageous for measuring small signal variations. Consider the 24-pin QFN package constraints for PCB layout if space is limited.

Part Context

This part belongs to the C8051F9xx series, designed for cost-sensitive and power-constrained embedded applications. It shares architectural similarities with the C8051F91x family but offers reduced Flash memory capacity. The series emphasizes mixed-signal capabilities within a compact form factor, targeting markets where battery life and peripheral integration are critical design drivers.

Replacement Considerations

The C8051F901-GM is a pin-compatible alternative with identical specifications except for having 8 kB of Flash instead of 16 kB (Note: Datasheet indicates F902 has 8kB, F912 has 16kB; F901 is also 8kB). Verify software compatibility and ensure the specific package variant matches the target footprint.