C8051F989-GM

Overview

The C8051F989-GM 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 supports a supply voltage range of 1.8V to 3.6V and functions within a temperature range of -40°C to 85°C. The component is housed in a 24-QFN (4x4) package with 17 I/O lines.

Feature Summary

• Integrates CIP-51 8051 architecture for high-performance instruction execution
• Includes on-chip peripherals such as PWM, WDT, and power-on reset
• Supports standard communication interfaces including SPI, UART/USART, and SMBus

Applications

• Battery-powered embedded systems requiring low voltage operation
• Industrial control applications with temperature constraints
• Data acquisition modules using internal analog peripherals

Procurement Notes

Verify current availability status as the part may be discontinued or subject to obsolescence notices. Confirm package marking and revision level against official errata documents before integration. Ensure design compatibility with existing toolchains and debug adapters for the C8051F9xx family.

Selection Notes

Select this component when a compact 24-pin QFN form factor is required alongside moderate Flash capacity. Compare against other C8051F9xx variants if higher I/O counts or larger memory sizes are needed. Validate that the 1.8V minimum supply voltage aligns with system power rails.

Part Context

This MCU belongs to the C8051F9xx full-digital mixed-signal system-on-chip family. These devices integrate high-speed ADCs, DACs, and various digital peripherals onto a single silicon die. The C8051F989-GM represents a specific configuration within this series optimized for cost-sensitive and space-constrained designs.

Replacement Considerations

Check for direct pin-compatible substitutes within the C8051F9xx series offering increased memory. Review manufacturer PCNs for end-of-life notifications. Alternative packages may require schematic and layout modifications.