C8051F970-A-GM

Overview

The C8051F970-A-GM is an 8-bit microcontroller from the Silicon Labs C8051F97x series, featuring a high-performance 8051 core operating at up to 25 MHz. It integrates 32 kB of in-system programmable Flash memory and 8 kB of RAM. The device supports low-power operation with sub-microamp wake-up currents for capacitive sensing applications. Key peripherals include a 12-bit ADC, multiple communication interfaces such as I2C, SPI, and UART, and extensive GPIO capabilities.

Feature Summary

• Integrates capacitive sensing technology supporting touch pads, buttons, sliders, and proximity detection with ultra-low power consumption.
• Includes a seven-channel direct memory access module and a single-cycle 16x16 multiply-and-accumulate unit for efficient data processing.
• Features an on-chip full-speed non-invasive debug interface enabling system-in-programming without external hardware.
• Provides comprehensive analog and digital peripherals including a 12-bit ADC, voltage reference, and multiple timer/counters.

Applications

• Human-machine interface (HMI) systems requiring capacitive touch controls
• Battery-powered devices utilizing low-power capacitive sensing solutions
• Embedded control systems needing integrated debugging and programming capabilities

Procurement Notes

Verify the specific suffix against official Silicon Labs documentation to confirm package type and temperature range. Confirm current availability status as distribution channels may list obsolete or end-of-life inventory. Ensure compatibility with existing design constraints regarding pinout and electrical specifications before procurement.

Selection Notes

Select this component for designs requiring integrated capacitive sensing alongside standard 8051 functionality. Consider the QFN-48 package dimensions for PCB layout constraints. Evaluate the 32 kB Flash and 8 kB RAM limits against application code size and data storage requirements. Verify that the 25 MHz clock speed meets real-time processing needs.

Part Context

This part belongs to the C8051F97x family of low-power capacitive sensing microcontrollers. It extends the capabilities of the broader C8051F series by adding specialized touch sensing features while maintaining compatibility with standard C8051 development tools like Simplicity Studio. The series targets cost-sensitive applications requiring robust human interaction interfaces.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult Silicon Labs documentation for potential cross-references within the C8051F97x or C8051F99x families if pinouts and memory sizes align.