C8051F989-C-GMR

Overview

The C8051F989-C-GMR is an 8-bit microcontroller from the Silicon Labs C8051F9xx series, utilizing the CIP-51 core. It features 4KB of in-system programmable Flash memory and 512 bytes of RAM. The device operates at a maximum clock speed of 25MHz with an internal oscillator. It includes nine 12-bit analog-to-digital converters, SMBus, SPI, and UART/USART interfaces. Power supply ranges from 1.8V to 3.6V, with an operating temperature range of -40°C to 85°C. The component is housed in a 24-QFN (4x4) package.

Feature Summary

• Integrates nine 12-bit ADCs for high-resolution analog signal acquisition.
• Includes on-chip temperature sensor and power-on reset circuitry.
• Supports multiple serial communication protocols including SMBus, SPI, and UART.

Applications

• Battery-powered sensor nodes requiring low voltage operation
• Industrial control systems with analog input requirements
• Data acquisition modules using integrated ADCs

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm package marking and datasheet revision alignment. Check for obsolescence notices as this part may be discontinued. Ensure ESD handling procedures are followed during assembly due to QFN packaging sensitivity.

Selection Notes

Select this MCU when nine 12-bit ADC channels are required within a compact 24-pin footprint. Compare against C8051F980 variants if fewer ADCs suffice but similar I/O counts are needed. Evaluate pin compatibility with existing designs before substitution.

Part Context

This component belongs to the C8051F9xx family of mixed-signal microcontrollers. It shares architectural similarities with other members like C8051F980 and C8051F985, differing primarily in Flash capacity and peripheral availability. The CIP-51 core provides enhanced performance over standard 8051 architectures.

Replacement Considerations

C8051F980-C-GMR offers identical pinout and peripherals but with 8KB Flash instead of 4KB. C8051F985-C-GMR provides 2KB Flash with the same package. Verify software compatibility and memory usage before substituting these variants.