C8051F985-C-GMR

Overview

The C8051F985-C-GMR is an 8-bit microcontroller from the Silicon Labs C8051F9xx series, featuring a CIP-51 core. It integrates 2KB of flash memory and 512 bytes of RAM within a 20-QFN (3x3) package. The device operates at speeds up to 25MHz with an internal oscillator and supports supply voltages between 1.8V and 3.6V. It includes peripherals such as PWM, WDT, POR, and brown-out detection/reset circuits.

Feature Summary

• Integrates a CIP-51 8051 core with internal oscillator for efficient code execution.
• Includes essential system management features like power-on reset and watchdog timer.
• Supports standard communication interfaces including SPI, UART/USART, and SMBus/I2C.

Applications

• Battery-powered embedded systems requiring low voltage operation
• Industrial control applications utilizing PWM and watchdog functions
• Data acquisition modules using serial communication protocols

Procurement Notes

Verify component authenticity through authorized channels due to discontinued status. Confirm package integrity upon receipt, as moisture sensitivity level is classified as Level 1. Ensure design compatibility with the 20-QFN footprint and thermal requirements before finalizing procurement plans.

Selection Notes

Select this component for designs requiring a compact 20-QFN form factor with integrated flash and basic peripheral sets. Consider the 25MHz speed limit and 2KB memory capacity against application demands. Evaluate the 1.8V to 3.6V operating range for power supply constraints.

Part Context

This part belongs to the C8051F9xx family of mixed-signal microcontrollers. It shares architectural similarities with other members like the C8051F980 and C8051F981, differing primarily in memory size and specific peripheral configurations within the same QFN package style.

Replacement Considerations

EFM8BB50F4G-A-QF is listed as a potential substitute. Verify pinout compatibility and software migration efforts when considering alternative components from the same manufacturer.