C8051F34C-GQ

Overview

The C8051F34C-GQ is an 8-bit mixed-signal microcontroller from the Silicon Labs C8051F34x family, housed in a 48-pin TQFP package. It features a high-speed 8051 core operating at 48 MIPS with 64 kB of Flash memory and 4.25 kB of RAM. The device integrates a full-speed USB 2.0 function controller with an integrated transceiver and clock recovery, eliminating the need for external components. Digital peripherals include two UARTs, SPI, SMBus, four timers, and a PCA. Unlike other members of the series, this specific variant lacks an on-chip ADC and voltage reference but retains dual comparators.

Feature Summary

• Integrates a full-speed USB 2.0 function controller with built-in transceiver and clock recovery for simplified board design.
• Features a high-performance pipelined 8051 core capable of executing instructions in one or two system clocks.
• Includes dual enhanced UARTs, hardware-enhanced SPI, and SMBus interfaces for versatile digital communication.
• Provides non-intrusive on-chip debug capabilities via the C2 interface without requiring external emulation hardware.

Applications

• Embedded modems
• Voice over Internet Protocol (VoIP) telephones
• Point-of-sale (POS) terminals
• Medical diagnostic equipment

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the datasheet revision matches current specifications. Check for 'Not Recommended for New Designs' status to assess long-term availability and lifecycle implications before finalizing procurement plans.

Selection Notes

Select this model when USB connectivity and multiple serial ports are required without analog-to-digital conversion needs. Compare against variants like the C8051F340 which include ADCs if sensor interfacing is necessary. Ensure the 48-pin TQFP footprint aligns with the target PCB layout constraints.

Part Context

This component belongs to the C8051F34x Full Speed USB Flash MCU family. It shares the same core architecture and package as the C8051F340 but omits the 10-bit ADC and internal voltage reference found in that variant. It is designed for applications requiring robust digital I/O and USB communication.

Replacement Considerations

Public confirmed substitute part numbers: C8051F340-GQ, C8051F341-GQ, C8051F344-GQ, C8051F345-GQ, C8051F348-GQ.

FAQ

Does the C8051F34C-GQ include an on-chip ADC?

No, the C8051F34C does not include a 10-bit ADC or internal voltage reference. These features are available in other members of the C8051F34x family such as the C8051F340.

What type of USB controller is integrated?

It integrates a USB specification 2.0 compliant full-speed (12 Mbps) or low-speed (1.5 Mbps) function controller with an integrated transceiver and clock recovery.