C8051F920-G-GMR

Overview

The C8051F920-G-GMR is an 8-bit microcontroller from the Silicon Labs C8051F9xx series, featuring a high-speed CIP-51 core operating at up to 25 MHz. It integrates 32 kB of in-system programmable Flash memory and 4352 bytes of internal data RAM. The device supports a supply voltage range of 0.9 V to 3.6 V, utilizing a built-in DC-DC converter for one-cell mode operation. Key peripherals include a 10-bit ADC with 300 ksps throughput, two comparators, multiple serial interfaces (SMBus, SPI, UART), and a SmaRTClock real-time clock module.

Feature Summary

• Integrated 10-bit SAR ADC with auto-averaging accumulator and burst mode for enhanced resolution and low-power sampling.
• Built-in DC-DC converter enabling efficient single-cell battery operation down to 0.9 V.
• Hardware SmaRTClock oscillator providing precise timing with minimal power consumption.
• On-chip debug circuitry supporting full-speed, non-intrusive in-system debugging without external emulators.

Applications

• Single-cell battery-powered embedded systems
• Dual-cell battery monitoring applications
• Low-power industrial control devices
• Portable instrumentation requiring precise analog-to-digital conversion

Procurement Notes

Verify the specific suffix G-GMR against the manufacturer's current datasheet to confirm package type and tape-and-reel specifications. Ensure compatibility with existing PCB footprints for the 32-pin QFN package. Cross-reference the part number with official Silicon Labs documentation to confirm active status and any recent product change notices affecting assembly or labeling.

Selection Notes

Select this component when designing systems requiring low-voltage operation from a single cell. The integrated DC-DC converter simplifies power management compared to LDO-only solutions. Consider the 32 kB Flash capacity for firmware size requirements. Verify that the 10-bit ADC resolution meets application accuracy needs before choosing over higher-resolution alternatives.

Part Context

This part belongs to the C8051F93x-C8051F92x family, which shares architectural similarities but differs in Flash memory size. The 'F92x' designation specifically indicates 32 kB Flash, whereas the 'F93x' variant offers 64 kB. Both share identical peripheral sets and pinouts, allowing for potential code portability between variants within the same package style.

Replacement Considerations

C8051F930-G-GMR