C8051F997-C-GUR

Overview

The C8051F997-C-GUR is an 8-bit microcontroller from Silicon Labs, part of the C8051F9xx series. It features a CIP-51 8051 core operating at up to 25 MHz. The device integrates 8 KB of Flash memory and 512 bytes of RAM. Key peripherals include a 12-bit ADC with 10 channels, SMBus, SPI, and UART/USART interfaces. It operates within a voltage range of 1.8V to 3.6V and supports surface-mount installation in a 24-QSOP package.

Feature Summary

• Integrates a high-performance CIP-51 8051 core with on-chip clock oscillator for standalone operation.
• Includes mixed-signal capabilities with a multi-channel 12-bit Analog-to-Digital Converter.
• Provides comprehensive digital communication interfaces including SMBus, SPI, and UART/USART.
• Features system-level monitoring tools such as Power-On Reset, VDD monitor, and Watchdog Timer.

Applications

• Industrial control systems requiring mixed-signal processing
• Battery-powered devices utilizing low-voltage operation
• Data acquisition systems using integrated ADC peripherals
• Embedded applications needing robust serial communication interfaces

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels due to end-of-life status. Confirm package integrity and moisture sensitivity level handling procedures prior to assembly. Review official product discontinuance notifications for final purchase dates and last-time-buy information. Ensure design-in compatibility with existing firmware architectures before procurement.

Selection Notes

Select this component for designs requiring a compact 8-bit MCU with integrated analog peripherals. The 24-pin QSOP package suits space-constrained layouts. Consider the 25 MHz speed and 12-bit ADC resolution for moderate performance needs. Evaluate power supply constraints against the 1.8V to 3.6V operating range. Compare pin counts and peripheral sets against alternative C8051F9xx variants if specific interface requirements differ.

Part Context

This microcontroller belongs to the C8051F9xx family, known for high integration and low power consumption. It utilizes the CIP-51 architecture, which enhances standard 8051 performance through pipelined execution. The series is designed for cost-sensitive applications requiring significant on-chip resources without external support components.

Replacement Considerations

Consult official Silicon Labs documentation for verified substitute part numbers within the C8051F9xx series. Pin-compatible alternatives may exist but require verification of electrical specifications and peripheral availability. Cross-reference datasheets for any functional differences in memory size or I/O configurations.