C8051F989-C-GUR

Overview

The C8051F989-C-GUR is an 8-bit microcontroller from the Silicon Labs C8051F9xx series, featuring a CIP-51 core. It integrates 4KB of flash memory and 512 bytes of RAM. The device operates at speeds up to 25MHz with an internal oscillator. It supports supply voltages between 1.8V and 3.6V and functions within a temperature range of -40°C to 85°C. Connectivity includes SMBus, SPI, and UART/USART interfaces. The component is housed in a 24-QSOP package.

Feature Summary

• Integrates capacitive sensing capabilities for touch interface applications
• Features ultra-low power consumption modes including sleep states with memory retention
• Includes on-chip temperature sensor and brownout detector for system monitoring

Applications

• Battery-powered portable devices requiring low current draw
• Consumer electronics utilizing capacitive touch controls
• Industrial sensors with temperature monitoring requirements

Procurement Notes

Verify component authenticity through authorized distributors as this part may be end-of-life. Confirm package integrity and moisture sensitivity level handling procedures during storage. Check for specific revision errata documents relevant to the manufacturing date code before integration into final designs.

Selection Notes

Select this model when 4KB program memory suffices for the application logic. Ensure the design accommodates the 24-QSOP footprint constraints. Verify that the required I/O count aligns with the available pins. Consider the operating voltage range compatibility with other system components.

Part Context

This MCU belongs to the C8051F9xx family designed for high integration and low power. It combines standard 8051 functionality with mixed-signal peripherals. The series targets cost-sensitive embedded systems needing efficient processing and analog features in a compact form factor.

Replacement Considerations

Check for direct substitutes within the C8051F9xx series such as C8051F986 or C8051F987 if pin compatibility is required. Review datasheets for memory size differences and peripheral variations before substitution.