C8051F920-G-GQ

Overview

The C8051F920-G-GQ is an 8-bit microcontroller from the Silicon Labs C8051F92x series, featuring a high-speed 8051 core with up to 25 MIPS throughput at a 25 MHz clock. 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 (0.9–1.8 V) or an LDO regulator for two-cell mode (1.8–3.6 V). Key peripherals include a 10-bit ADC with 300 ksps throughput, two comparators, multiple serial interfaces, and a SmaRTClock real-time clock.

Feature Summary

• Operates on a single supply voltage ranging from 0.9 V to 3.6 V, supporting both one-cell and two-cell battery configurations via integrated power management circuitry.
• Integrates a 10-bit SAR ADC with programmable throughput up to 300 ksps, featuring auto-averaging accumulator and burst mode capabilities for enhanced resolution.
• Includes a hardware SmaRTClock oscillator that functions down to 0.9 V with ultra-low supply current, providing precise timing without external components.
• Features a pipelined 8051 core executing 70% of instructions in one or two system clocks, alongside comprehensive digital peripherals including SMBus, SPI, and UART.

Applications

• Single-cell or dual-cell battery-powered embedded systems
• Low-power industrial control devices requiring precise analog sensing
• Portable consumer electronics with strict power budget constraints

Procurement Notes

Verify component authenticity through authorized distributors. Confirm RoHS compliance status as indicated in official documentation. Check for 'Not Recommended for New Designs' notices prior to finalizing procurement plans. Ensure ordering suffixes match required package types and temperature ranges specified in the datasheet.

Selection Notes

Select this model when low-voltage operation below 1.8 V is required using the internal DC-DC converter. Choose based on the need for integrated analog peripherals like the 10-bit ADC and comparators. Consider the 32 kB Flash capacity against application memory requirements. Evaluate pin count and package availability for PCB layout constraints.

Part Context

This component belongs to the C8051F9xx family of mixed-signal microcontrollers designed for low-power applications. It shares architectural similarities with the C8051F93x series but offers reduced Flash memory capacity. The device is part of Silicon Labs' portfolio targeting cost-sensitive, battery-operated markets requiring high integration levels.

Replacement Considerations

C8051F930-G-GQ: Offers identical peripheral sets and performance but includes 64 kB of Flash memory instead of 32 kB. Verify software compatibility regarding memory mapping if upgrading storage capacity.