C8051F986-C-GU

Overview

The C8051F986-C-GU is an 8-bit microcontroller from the Silicon Labs C8051F9xx series, featuring a CIP-51 core. It operates at a maximum clock frequency of 25 MHz and includes 8 KB of Flash program memory and 512 bytes of RAM. The device integrates ten 12-bit analog-to-digital converters (ADCs). It supports supply voltages between 1.8 V and 3.6 V and functions within a temperature range of -40°C to +85°C. Communication interfaces include SMBus/I2C, SPI, and UART/USART. The component is housed in a 24-pin QSOP package.

Feature Summary

• Integrates ten 12-bit ADC channels for high-resolution signal acquisition.
• Features ultra-low power consumption with sleep modes as low as 10 nA with memory retention.
• Includes a capacitive sensing interface for touch detection applications.
• Provides rapid wakeup capability in approximately 2 microseconds.

Applications

• Battery-powered portable instrumentation
• Capacitive sensing user interfaces
• Low-power data acquisition systems

Procurement Notes

Verify the specific suffix 'C' indicates commercial temperature grade compliance against project requirements. Confirm the 'GU' suffix corresponds to the 24-QSOP package variant. Check current lifecycle status as distribution sources may list this part as obsolete or end-of-life. Ensure design-in documentation references the correct errata for Rev A/B silicon revisions.

Selection Notes

Select this model when ten independent 12-bit ADC channels are required alongside capacitive sensing capabilities. The CIP-51 architecture offers enhanced performance over standard 8051 cores while maintaining compatibility. Consider the 24-QSOP package constraints for board layout. Evaluate power budgets against the specified active and sleep mode currents for battery-operated designs.

Part Context

This component belongs to the C8051F9xx family of ultra-low power mixed-signal microcontrollers. The series emphasizes energy efficiency and integrated analog peripherals for sensor-based applications. The C8051F986 variant specifically provides a balance of processing speed, memory capacity, and extensive analog input capabilities within a compact surface-mount package.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.