C8051F997-C-GM

Overview

The C8051F997-C-GM is an 8-bit microcontroller from the Silicon Labs C8051F9xx series, featuring a CIP-51 core operating at up to 25 MHz. It integrates 8 KB of Flash program memory and 512 bytes of RAM. The device includes a 10-bit ADC with multiple channels, CapSense capability, and standard interfaces such as SPI, UART/USART, and I2C/SMBus. It operates within a specified voltage range and supports peripherals like Brown-out Detect, POR, PWM, and WDT.

Feature Summary

• Integrates CapSense functionality for touch sensing applications
• Includes comprehensive peripheral set with PWM and watchdog timer
• Supports multiple communication protocols including SPI and I2C

Applications

• Capacitive sensing interface designs
• Low power embedded control systems
• Battery operated devices requiring efficient power management

Procurement Notes

Verify the specific suffix 'C' against official Silicon Labs documentation to confirm temperature grade and package variant. Ensure compatibility with existing PCB footprints for the QFN package. Cross-reference ordering information directly with manufacturer datasheets to avoid discrepancies in pinout or electrical specifications.

Selection Notes

Select this component when an 8-bit MCU with integrated capacitive sensing is required. Consider the 8 KB Flash limit for application code size. Evaluate the 10-bit ADC resolution against sensor accuracy needs. Confirm that the 25 MHz maximum speed meets real-time processing requirements for the target system.

Part Context

This part belongs to the C8051F9xx family of ultra-low power 8-bit MCUs. These devices are designed for applications demanding low power consumption and high integration. The C8051F997 variant specifically targets cost-sensitive designs needing basic connectivity and sensing capabilities without complex external components.

Replacement Considerations

Check for direct substitutes within the C8051F9xx series with higher memory or different package options. Verify pin-to-pin compatibility if replacing with other 8-bit MCUs. Consult Silicon Labs documentation for updated lifecycle status and recommended alternative parts.