C8051F981-C-GMR

Overview

The C8051F981-C-GMR is an 8-bit microcontroller from the Silicon Labs C8051F9xx series, utilizing the CIP-51 core. It features 8KB of in-system programmable Flash memory and 512 bytes of RAM. The device operates at a maximum clock frequency of 25MHz with an internal oscillator. It provides 16 general-purpose I/O pins and supports SMBus, SPI, and UART interfaces. Operating voltage ranges from 1.8V to 3.6V within a temperature range of -40°C to +85°C. The component is housed in a 20-QFN (3x3) package.

Feature Summary

• Integrates high-speed 8-bit CIP-51 processor architecture for efficient code execution
• Includes on-chip analog-to-digital conversion capabilities for signal processing
• Supports multiple serial communication protocols including SPI and UART
• Features low-power operation suitable for battery-constrained applications

Applications

• Industrial control systems requiring compact MCU solutions
• Consumer electronics with limited power budgets
• Sensor interface nodes using serial communication
• Portable instrumentation devices

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm package marking and lot traceability against official datasheets. Check for obsolescence notices as this part may be discontinued. Ensure ESD handling procedures are followed during storage and assembly. Validate supply chain documentation for RoHS compliance and material declarations.

Selection Notes

Compare pin compatibility and peripheral availability against alternative C8051F variants. Assess memory requirements to ensure 8KB Flash and 512B RAM meet application needs. Verify voltage level compatibility with system power rails. Consider thermal performance within the specified operating temperature range. Evaluate software toolchain support for the CIP-51 architecture.

Part Context

This component belongs to the C8051F9xx family of mixed-signal microcontrollers. These devices integrate standard 8051 peripherals with advanced analog features on a single chip. The C8051F981 variant specifically omits the ADC found in other members like the C8051F980. This differentiation allows for cost optimization in applications not requiring analog input.

Replacement Considerations

C8051F980-C-GMR offers identical specifications but includes integrated ADC functionality. C8051F989-GM provides similar architecture but differs in package size and memory configuration.