C8051F34D-GQ

Overview

The C8051F34D-GQ is an 8-bit microcontroller from the Silicon Labs C8051F34x family, featuring a high-speed pipelined 8051 core operating at up to 25 MIPS. It integrates 32 kB of in-system programmable Flash memory and 2304 bytes of RAM within a 32-pin LQFP package. The device includes a USB 2.0 compliant function controller with integrated transceiver and clock recovery, supporting full speed (12 Mbps) or low speed (1.5 Mbps) operation. Digital peripherals include four 16-bit timers, a PCA, SPI, SMBus, and UARTs. It operates on a voltage supply of 2.7 V to 5.25 V across a temperature range of –40 °C to +85 °C.

Feature Summary

• Integrates a USB 2.0 function controller with built-in transceiver and clock recovery for simplified system design.
• Features a high-performance 8051 core with pipelined architecture executing most instructions in one or two system clocks.
• Includes on-chip debug circuitry enabling non-intrusive in-system debugging without external emulators.
• Provides flexible I/O configuration via a programmable digital crossbar and supports multiple communication interfaces.

Applications

• PC peripherals
• Point-of-sale terminals
• Embedded modems

Procurement Notes

Verify component status before procurement as this series is marked Not Recommended for New Designs. Confirm package type matches the specific suffix requirements for your PCB layout. Check for available replacement families if long-term supply stability is required for production cycles.

Selection Notes

Select this model when a cost-effective USB-enabled 8-bit MCU with moderate memory is sufficient. Compare against higher-memory variants like the C8051F340 if larger program storage is needed. Ensure the 32-pin package fits the mechanical constraints of the target enclosure.

Part Context

This component belongs to the C8051F34x Full Speed USB Flash MCU family by Silicon Laboratories. The family offers mixed-signal System-on-Chip solutions designed for applications requiring USB connectivity and analog processing capabilities alongside standard microcontroller functions.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material.