C8051F327-GMR

Overview

The C8051F327-GMR is an 8-bit microcontroller from the Silicon Labs C8051F32x family, housed in a 28-pin QFN package. It features a high-speed pipelined 8051 core operating at up to 25 MHz with 25 MIPS throughput. The device integrates 16 kB of in-system programmable Flash memory and 1536 bytes of internal RAM. Key peripherals include a USB 2.0 function controller with integrated transceiver and clock recovery, enhanced UART, two 16-bit timers, and 15 general-purpose I/O pins that are 5 V tolerant.

Feature Summary

• Integrated full-speed USB 2.0 function controller with on-chip transceiver and clock recovery, eliminating the need for external crystals or resistors.
• High-performance CIP-51 microcontroller core delivering up to 25 MIPS execution speed with a pipelined instruction architecture.
• On-chip debug circuitry enabling non-intrusive in-system debugging without requiring external emulator hardware.
• All digital I/O ports are 5 V tolerant, providing flexibility for interfacing with various logic levels.

Applications

• Embedded USB connectivity solutions
• In-system programming applications
• General-purpose serial communication interfaces

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific GMR suffix indicates tape-and-reel packaging suitable for automated assembly. Check for RoHS compliance status and ensure the part meets environmental regulations for your target market. Validate that the 28-QFN package dimensions align with your PCB land pattern requirements before finalizing procurement.

Selection Notes

Select this component when a fully integrated USB MCU solution is required without external passive components. The 16 kB Flash capacity suits moderate code storage needs, while the 1536-byte RAM supports complex data handling. Ensure the design accommodates the 28-pin QFN footprint and utilizes the available 15 I/O pins effectively. Consider the 5 V tolerant I/O feature if interfacing with higher voltage logic systems.

Part Context

This part belongs to the C8051F32x series of mixed-signal microcontrollers. It shares architectural similarities with the C8051F326 but differs in specific peripheral configurations or memory mappings as defined by the datasheet. The series is designed for cost-sensitive applications requiring robust USB connectivity and standard 8051 compatibility.

Replacement Considerations

The C8051F326 is a closely related variant within the same family. Verify pinout compatibility and specific peripheral differences before substitution. No other public substitute part numbers are confirmed for direct replacement.