C8051F973-A-GM

Overview

The C8051F973-A-GM is an 8-bit microcontroller from the Silicon Labs C8051F9xx series, featuring a high-performance 8051 core operating at up to 25 MHz. It integrates 16 kB of in-system programmable Flash memory and 4 kB of RAM. The device includes a low-power CapSense interface for capacitive touch sensing applications. Analog capabilities are provided by a multi-channel 10-bit ADC. Communication interfaces include SMBus (I2C), SPI, and UART/USART. It operates within a supply voltage range of 1.8 V to 3.6 V and is available in a QFN-48 package.

Feature Summary

• Integrates a low-power CapSense interface for capacitive touch sensor applications
• Features a high-speed 8051 CPU with up to 25 MHz operation
• Includes on-chip analog peripherals such as a multi-channel 10-bit ADC
• Provides comprehensive digital communication interfaces including SMBus, SPI, and UART

Applications

• Capacitive touch sensing controllers
• Low-power embedded control systems
• Battery-operated devices requiring efficient power management
• Industrial monitoring with integrated analog-to-digital conversion

Procurement Notes

Verify the specific suffix 'A' against official Silicon Labs documentation to confirm pinout compatibility and electrical characteristics. Confirm package type is QFN-48. Check current lifecycle status as some C8051F9xx variants may be subject to obsolescence notices. Ensure design-in tools and debug adapters are compatible with the 8051 architecture.

Selection Notes

Select this component when a dedicated low-power capacitive touch solution is required alongside standard 8-bit MCU processing. Compare against the C8051F975-A-GM if different I/O counts or memory sizes are needed. Verify that the 25 MHz clock speed meets real-time processing requirements. Ensure the 1.8 V to 3.6 V supply range aligns with the system power design.

Part Context

This part belongs to the C8051F9xx family of mixed-signal microcontrollers designed for cost-sensitive and space-constrained applications. The family emphasizes low power consumption and integrated peripheral sets, reducing external component count. The C8051F97x sub-series specifically targets applications benefiting from integrated capacitive sensing capabilities.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source data. Consult Silicon Labs documentation for potential cross-references within the C8051F9xx family.