C8051F987-GM

Overview

The C8051F987-GM is an 8-bit microcontroller from Silicon Labs, utilizing the CIP-51 8051 core architecture. It features a maximum clock frequency of 25 MHz and includes 4 kB of in-system programmable flash memory alongside 512 bytes of RAM. The device is housed in a 24-pin QFN package with dimensions of 4x4 mm. It supports a supply voltage range of 1.8 V to 3.6 V and operates within a temperature range of -40°C to +85°C. Key peripherals include multiple I/O lines, timers, and standard communication interfaces.

Feature Summary

• Integrates capacitive sensing capabilities for touch interface applications
• Provides high-speed analog-to-digital conversion for signal acquisition
• Includes on-chip temperature sensor for thermal monitoring

Applications

• Capacitive touch sensing controllers
• Battery-powered portable devices
• Industrial control systems requiring low power consumption

Procurement Notes

Verify the specific revision level and manufacturing date code upon procurement, as component revisions may affect electrical characteristics or pin compatibility. Confirm that the supplier provides original manufacturer documentation and traceability records. Ensure the ordering suffix matches the required package variant and lead-free status specifications defined in the official datasheet.

Selection Notes

Select this component when a compact 8-bit MCU with integrated capacitive touch functionality is required. It is suitable for designs needing moderate processing speed with minimal external components. Consider the available I/O count and peripheral set against application requirements before choosing over higher-memory variants in the same family.

Part Context

This part belongs to the C8051F9xx series of mixed-signal microcontrollers. These devices are designed for cost-sensitive applications requiring integrated analog and digital peripherals. The series emphasizes low power operation and ease of development through comprehensive on-chip debug capabilities.

Replacement Considerations

Check for direct pin-compatible substitutes within the C8051F9xx family that offer increased memory or additional peripherals. Verify software compatibility if migrating between different silicon revisions or closely related model numbers.