C8051F985-C-GM

Overview

The C8051F985-C-GM 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 SMBus, SPI, UART/USART, PWM, WDT, POR, and brown-out detection/reset circuits.

Feature Summary

• Integrates a high-performance CIP-51 8051 core with pipelined architecture for efficient code execution.
• Includes on-chip analog peripherals and digital system features for sensor interfacing and control.
• Supports multiple serial communication interfaces including I2C, SPI, and UART for versatile connectivity.

Applications

• Battery-powered portable devices requiring low voltage operation
• Industrial control systems utilizing serial communication protocols
• Consumer electronics with limited pin count requirements

Procurement Notes

Verify component status as this specific part number may be discontinued or not recommended for new designs. Confirm availability through authorized distributors and check for valid replacement options if current stock is insufficient. Ensure compliance with RoHS standards and moisture sensitivity levels during handling.

Selection Notes

Select this MCU for applications needing an 8-bit 8051-compatible architecture in a compact QFN package. Consider the 2KB flash limit for firmware size and verify peripheral requirements match the available SMBus, SPI, and UART channels. Evaluate power consumption against the 1.8V to 3.6V operating range.

Part Context

This component belongs to the C8051F9xx family of mixed-signal microcontrollers. These devices are designed for cost-sensitive applications requiring integrated analog and digital functions. The C8051F985 variant specifically offers smaller memory capacity compared to higher-end models in the same series.

Replacement Considerations

Check for C8051F98x series alternatives or C8051F85x series parts with similar pinouts and peripheral sets. Verify compatibility regarding flash size, RAM, and package dimensions before substitution.