C8051F931-G-GM

Overview

The C8051F931-G-GM 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 64 kB of in-system programmable Flash memory and 4352 bytes of internal data RAM. The device supports operation across a supply voltage range of 0.9 V to 3.6 V, utilizing a built-in DC-DC converter for one-cell mode efficiency. Key peripherals include a 10-bit SAR ADC with 23 external inputs, two comparators, and multiple digital interfaces such as SMBus, SPI, and UART.

Feature Summary

• Integrated 10-bit SAR ADC with programmable throughput and auto-averaging accumulator
• Built-in DC-DC converter enabling efficient low-voltage single-cell operation
• Hardware SmaRTClock oscillator supporting real-time clock functions with minimal power consumption
• On-chip debug circuitry facilitating non-intrusive in-system debugging

Applications

• Single or dual battery powered portable devices
• Industrial control systems requiring precise analog sensing
• Low-power embedded applications with real-time clock requirements

Procurement Notes

Verify the specific suffix GMR against the official datasheet to confirm package type and tape-and-reel specifications. Ensure the ordering part number matches the exact memory configuration and temperature grade required for the design. Cross-reference the manufacturer's latest documentation for any product change notices or obsolescence warnings prior to final procurement.

Selection Notes

Select this component when a high-performance 8-bit MCU with integrated analog peripherals is required. The C8051F931 offers extensive I/O flexibility and robust clocking options suitable for complex communication protocols. Consider the available package options and ensure the thermal characteristics align with the intended operating environment constraints.

Part Context

This microcontroller belongs to the C8051F9xx family, designed for applications demanding high integration and low power consumption. The series combines a fast 8051-compatible core with significant on-chip resources, reducing the need for external components. It targets cost-sensitive designs that require reliable performance in harsh environments.

Replacement Considerations

Consult the official datasheet for direct pin-to-pin compatible alternatives within the C8051F9xx series. Verify memory size and peripheral availability when selecting substitutes. No public confirmed substitute part numbers are listed in the provided source material.