C8051F997-C-GMR

Overview

The C8051F997-C-GMR is an 8-bit microcontroller from the Silicon Labs C8051F9xx series, utilizing the CIP-51 core. It features a maximum operating speed of 25MHz and includes 64KB of in-system programmable Flash memory alongside 4.25KB of RAM. The device operates within a supply voltage range of 0.9V to 3.6V and supports an industrial temperature range of -40°C to +85°C. It is housed in a 32-QFN (5x5) package with 24 available I/O lines. Connectivity options include SMBus, SPI, and UART/USART interfaces, supported by peripherals such as PWM, WDT, and POR.

Feature Summary

• Integrates a high-performance CIP-51 8051 core for efficient code execution
• Supports low-voltage operation down to 0.9V for energy-constrained applications
• Includes comprehensive on-chip analog and digital peripherals
• Features in-system programmable Flash for flexible firmware updates

Applications

• Battery-powered sensor nodes requiring ultra-low voltage operation
• Industrial control systems with multiple communication interfaces
• Portable medical devices needing precise analog signal processing
• Smart home automation controllers

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for any Product Change Notifications (PCNs) related to assembly or material changes. Ensure the specific suffix matches the required packaging format. Review the latest errata sheet for known silicon revisions before finalizing procurement plans.

Selection Notes

Select this model when a balance of moderate program memory and extensive analog capabilities is required at very low voltages. Compare against the C8051F98x series if higher I/O counts are unnecessary but lower cost is preferred. Evaluate pin compatibility with existing designs using the 32-QFN footprint. Consider the internal oscillator accuracy requirements versus external crystal solutions for timing-sensitive applications.

Part Context

This component belongs to the C8051F9xx family, which emphasizes mixed-signal integration and low-power performance. It shares architectural similarities with other members like the C8051F930 and C8051F980 but offers distinct memory and peripheral configurations. The series is designed for applications demanding robust analog functionality combined with standard digital control tasks.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Consult official Silicon Labs resources for potential obsolescence management or cross-reference recommendations.