C8051F34A-GQR

Overview

The C8051F34A-GQR is a high-speed 8-bit microcontroller from the Silicon Labs C8051F34x family, featuring a pipelined 8051 core operating at 48 MIPS. It integrates 64 kB of in-system programmable Flash memory and 4352 bytes of RAM. The device includes a full-speed USB 2.0 function controller with an integrated transceiver and clock recovery, eliminating the need for external components. Analog peripherals consist of a 10-bit ADC with up to 20 channels, two comparators, and an internal voltage reference. Digital interfaces include SPI, SMBus, and dual UARTs. It operates on a supply voltage of 2.7 V to 5.25 V using an on-chip regulator and supports temperatures from -40 °C to +85 °C in a 32-pin LQFP 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 64 kB Flash and 4352 bytes RAM
• On-chip analog subsystem including a 10-bit ADC, dual comparators, and internal voltage reference
• Flexible digital I/O with hardware-enhanced communication interfaces and non-invasive debug support

Applications

• PC peripherals and embedded USB connectivity solutions
• Point-of-sale (POS) terminals and weigh scales
• Medical diagnostic equipment and embedded modems
• Voice over Internet Protocol (VoIP) telephones

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific revision level matches project requirements, as datasheet revisions may update electrical characteristics or pin definitions. Ensure compliance with RoHS directives and check for any product change notifications regarding manufacturing site transfers or material substitutions prior to final procurement authorization.

Selection Notes

Select this component when a fully integrated mixed-signal SoC with native USB capability is required without external PHY components. The 48 MHz processing speed and substantial memory footprint suit applications demanding complex firmware logic alongside data acquisition. Verify that the 32-pin LQFP package dimensions fit the target PCB layout constraints and that the 2.7 V to 5.25 V operating range aligns with the system power architecture.

Part Context

This part belongs to the C8051F34x series of full-speed flash MCUs designed for USB applications. It shares architectural similarities with other members like the C8051F340 and C8051F349 but differs in memory size and peripheral availability. The 'G' suffix indicates lead-free and RoHS-compliant packaging, while 'QR' specifies the tape-and-reel shipping format for automated assembly processes.

Replacement Considerations

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