C8051F387-GMR

Overview

The C8051F387-GMR is an 8-bit microcontroller from the Silicon Labs C8051F38x family, featuring a high-speed pipelined 8051-compatible core operating at up to 48 MIPS. It integrates 32 kB of in-system programmable Flash memory and 2304 bytes of RAM. The device includes a USB 2.0 compliant full-speed controller with integrated transceiver and clock recovery. Analog peripherals include two comparators and a temperature sensor. Digital interfaces comprise hardware-enhanced SPI, dual I2C/SMBus, and dual UARTs. It operates on a voltage supply of 2.7 V to 5.25 V within a temperature range of –40 °C to +85 °C.

Feature Summary

• Integrates a high-speed 48 MIPS pipelined 8051 core with in-system programmable Flash memory for field upgrades.
• Features a USB 2.0 compliant full-speed controller with integrated transceiver and internal clock recovery, eliminating external components.
• Includes versatile digital communication peripherals such as enhanced SPI, dual I2C/SMBus, and dual UARTs alongside multiple timers.
• Provides analog capabilities including two comparators, a built-in temperature sensor, and brown-out detection circuitry.

Applications

• USB-enabled PC peripherals
• Point-of-sale terminals
• Industrial control systems requiring mixed-signal processing
• Embedded devices needing robust serial communication interfaces

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm package integrity upon receipt, as surface-mount QFN packages are sensitive to physical damage. Ensure compatibility with existing design specifications regarding voltage levels and pin configurations before integration into production workflows.

Selection Notes

Select this model when a compact 32-pin QFN package is required alongside USB connectivity and moderate Flash capacity. Consider the 2304-byte RAM limit for complex data handling tasks. Evaluate the 2.7 V to 5.25 V operating range against system power constraints. Verify that the absence of an onboard ADC aligns with application requirements, as other variants in the series may offer additional analog conversion features.

Part Context

This component belongs to the C8051F38x Full Speed Flash MCU family by Silicon Labs. It shares architectural similarities with the C8051F34x series but offers enhanced USB integration and higher performance. The GMR suffix indicates a tape-and-reel packaging format suitable for automated surface-mount assembly processes.

Replacement Considerations

Direct substitutes within the same family include C8051F380, C8051F381, C8051F383, C8051F385, and C8051F387/C variants. Cross-family replacements require careful evaluation of pinout compatibility and peripheral availability. Always consult official datasheets to confirm functional equivalence before substituting components in existing designs.