C8051F345-GQR

Overview

The C8051F345-GQR is an 8-bit mixed-signal System-on-Chip microcontroller from the Silicon Labs C8051F34x family. It features a high-speed pipelined 8051 core operating at 48 MIPS, integrated with a full-speed USB 2.0 function controller and 64 kB of in-system programmable Flash memory. The device includes 4352 bytes of RAM, a 10-bit ADC with up to 200 ksps sampling rate, two comparators, and an internal voltage reference. It supports multiple digital communication interfaces including SPI, SMBus, and dual UARTs, housed in a 48-pin TQFP package.

Feature Summary

• Integrated full-speed USB 2.0 function controller with built-in transceiver and clock recovery
• High-performance 48 MIPS pipelined 8051-compatible core with on-chip debug capabilities
• Mixed-signal analog peripherals including a 10-bit ADC, temperature sensor, and comparators
• Flexible I/O configuration via programmable digital crossbar with 5 V tolerant ports

Applications

• USB-enabled data acquisition systems
• Point-of-sale terminals and embedded modems
• Medical diagnostic equipment interfaces
• Voice over Internet Protocol (VoIP) telephones

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific revision level matches design requirements. Check for End-of-Life status notifications as this series may be discontinued. Ensure environmental compliance documentation aligns with target market regulations before finalizing procurement orders.

Selection Notes

Select this model when a complete USB solution without external components is required. The 48 MHz core speed suits applications needing rapid data processing alongside analog signal conditioning. Verify that the 64 kB Flash capacity meets firmware storage needs. Consider the 48-pin package constraints against available PCB real estate and thermal management requirements.

Part Context

This component belongs to the C8051F34x Full Speed Flash MCU family, designed for highly integrated USB applications. It replaces older discrete USB controller designs by combining the microprocessor, USB PHY, and analog peripherals into a single silicon die. The GQR suffix indicates the specific 48-pin Thin Quad Flat Package variant suitable for surface-mount assembly.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.