C8051F349-GQR

Overview

The C8051F349-GQR is an 8-bit microcontroller from the Silicon Labs C8051F34x family, featuring a high-speed 8051 core operating at 25 MIPS. It integrates 32 kB of Flash memory and 2304 bytes of RAM within a 32-pin LQFP package. The device includes a USB 2.0 compliant full-speed function controller with integrated transceiver and clock recovery. Digital peripherals consist of hardware-enhanced SPI, SMBus, two UARTs, four 16-bit timers, and a Programmable Counter Array. Analog features include two comparators, an internal voltage reference, and a temperature sensor.

Feature Summary

• Integrates a USB 2.0 full-speed function controller with built-in transceiver and clock recovery for simplified system design.
• Features a pipelined 8051 core delivering 25 MIPS performance with expanded interrupt handling capabilities.
• Includes comprehensive digital communication interfaces such as enhanced SPI, SMBus, and dual UARTs alongside multiple timer modules.

Applications

• Embedded modems requiring USB connectivity
• Voice over Internet Protocol (VoIP) telephones
• Point-of-sale (POS) terminals
• Weigh scales

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific revision level matches project requirements. Check for moisture sensitivity classification prior to soldering. Ensure proper ESD handling protocols are followed during storage and assembly processes.

Selection Notes

Select this component when a compact solution with integrated USB functionality is required without external passive components. Consider the 25 MIPS processing speed and available I/O count for system complexity. Evaluate the 32 kB Flash size against application code requirements. Note that this series is designated as not recommended for new designs.

Part Context

This part belongs to the C8051F34x Full Speed USB Flash MCU Family by Silicon Laboratories. It shares architectural similarities with other members like the C8051F340 and C8051F342 but differs in memory capacity and peripheral availability. The GQR suffix indicates a tape and reel packaging format suitable for automated surface-mount assembly.

Replacement Considerations

Public confirmed substitute part numbers: None identified in verified documentation.