C8051F34B-GQR

Overview

The C8051F34B-GQR is a mixed-signal System-on-Chip microcontroller from the Silicon Labs C8051F34x family. It features a high-speed 8051 core operating at up to 48 MIPS, integrated with a full-speed USB 2.0 function controller and a 10-bit analog-to-digital converter. The device includes 64 kB of in-system programmable Flash memory and 4352 bytes of RAM. It operates within a voltage range of 2.7 V to 5.25 V and supports an industrial temperature range of -40 °C to +85 °C.

Feature Summary

• Integrates a full-speed USB 2.0 function controller with an on-chip transceiver and clock recovery circuitry, eliminating the need for external crystals or resistors.
• Features a high-performance pipelined 8051-compatible core capable of executing instructions in one or two system clocks.
• Includes a 10-bit ADC with built-in analog multiplexer supporting single-ended and differential modes, alongside internal voltage reference and temperature sensor.
• Provides flexible digital peripherals including hardware-enhanced SPI, SMBus, UARTs, and a Programmable Counter Array.

Applications

• PC peripherals requiring embedded USB connectivity
• Point-of-sale terminals
• Embedded modems
• Voice over Internet Protocol telephones

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm package integrity and pin alignment against the TQFP-32 specification. Ensure compliance with RoHS directives and check for specific manufacturing lot codes if required by quality standards. Review datasheet revision history for any functional updates prior to integration.

Selection Notes

Select this component for designs requiring a fully integrated USB solution without external PHY components. Consider the 48-pin TQFP or 32-pin LQFP/QFN packages based on board space constraints. Evaluate the 10-bit ADC resolution and sampling rate against application signal requirements. Verify that the 64 kB Flash and 4352 bytes RAM meet firmware and data storage needs.

Part Context

This part belongs to the C8051F34x Full Speed Flash MCU family, designed as a single-chip solution for embedded USB applications. It combines a robust 8051 CPU with extensive analog and digital peripherals. The series targets cost-sensitive and high-performance applications needing reliable USB communication and mixed-signal processing capabilities.

Replacement Considerations

Consult the official datasheet for cross-referencing compatible devices within the C8051F34x series. Verify pinout compatibility and peripheral availability before substituting. Note that this family is marked as Not Recommended for New Designs; evaluate long-term supply stability and potential migration paths to newer silicon generations.