C8051F920-GQ

Overview

The C8051F920-GQ is an 8-bit microcontroller from Silicon Labs, part of the C8051F92x series. It features a high-speed 8051 core operating at up to 25 MHz with 25 MIPS throughput. The device includes 32 kB of in-system programmable Flash memory and 4352 bytes of internal data RAM. Key peripherals include a 10-bit SAR ADC with up to 300 ksps throughput, two comparators, and a built-in temperature sensor. It supports supply voltages from 0.9 V to 3.6 V via one-cell or two-cell modes with an integrated DC-DC converter. The component is housed in a 32-pin QFN (5 x 5 mm) package.

Feature Summary

• Integrated DC-DC converter enables operation down to 0.9 V for single-cell battery applications
• On-chip debug circuitry provides full-speed non-intrusive in-system debugging without external emulators
• Hardware SmaRTClock operates at low power consumption below 0.5 µA supply current
• Programmable digital crossbar allows flexible assignment of peripheral functions to I/O pins

Applications

• Single-cell battery powered devices
• Portable instrumentation
• Sensor interface circuits
• Low power embedded systems

Procurement Notes

Verify the specific suffix against official documentation to confirm package type and temperature range. Confirm that the ordering code matches the exact memory size and pin configuration required for your design. Check for any recent product change notices regarding availability or manufacturing site updates before finalizing procurement plans.

Selection Notes

Select this component when ultra-low voltage operation is critical due to its integrated DC-DC converter supporting 0.9 V input. Consider it for designs requiring precise analog measurements given the 10-bit ADC specifications. Ensure the 32 kB Flash capacity meets application storage needs compared to the 64 kB variant in the same family.

Part Context

This MCU belongs to the C8051F93x-C8051F92x family of mixed-signal microcontrollers. These devices are designed for cost-sensitive and battery-operated applications. They share the same core architecture and peripheral set as the higher-memory F93x variants, differing primarily in Flash capacity. The family emphasizes low power consumption and high integration levels.

Replacement Considerations

Public confirmed substitute part numbers: C8051F930-GQ.