C8051F34B-GQ

Overview

The C8051F34B-GQ is a mixed-signal System-on-Chip microcontroller from Silicon Labs, featuring a high-speed pipelined 8051 core operating at up to 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 supporting up to 200 ksps, two comparators, and an internal voltage reference. Digital interfaces include enhanced UARTs, SPI, and SMBus. It operates within a supply voltage range of 2.7 V to 5.25 V and supports industrial temperatures from -40 °C to +85 °C.

Feature Summary

• Integrated full-speed USB 2.0 controller with on-chip clock recovery and transceiver
• High-performance 8051-compatible core with pipelined architecture
• On-chip debug circuitry enabling non-intrusive in-system debugging
• Mixed-signal capabilities with 10-bit ADC and dual comparators

Applications

• PC peripherals and point-of-sale terminals
• USB communication devices
• Data acquisition systems
• Portable instruments

Procurement Notes

Verify the specific suffix '-GQ' corresponds to the 32-pin LQFP package variant as defined in the official datasheet. Confirm that the component meets the required industrial temperature range specifications. Ensure compatibility with existing design tools and development environments provided by the manufacturer. Check for any end-of-life notices or recommended replacement alternatives before finalizing procurement plans.

Selection Notes

Select this model when a fully integrated USB solution is required without external PHY components. Consider the 48 MIPS processing speed for applications demanding efficient firmware execution. Evaluate the 64 kB Flash capacity against application code size requirements. Verify that the 32-pin LQFP package fits the target PCB layout constraints and thermal management needs.

Part Context

This component belongs to the C8051F34x family of Full Speed Flash MCUs designed specifically for embedded USB applications. The series provides a single-chip solution by combining the CPU, memory, USB interface, and analog peripherals. It is part of Silicon Labs' broader portfolio of mixed-signal system-on-chip microcontrollers aimed at simplifying design complexity.

Replacement Considerations

Consult the official datasheet for direct pin-to-pin compatible substitutes within the same family, such as other C8051F34x variants with differing memory sizes or package options.