C8051F34A-GM

Overview

The C8051F34A-GM is a fully integrated mixed-signal System-on-Chip microcontroller from Silicon Labs, belonging to the C8051F34x family. It features a high-speed pipelined 8051-compatible core operating at up to 48 MIPS with a maximum clock frequency of 48 MHz. The device includes 64 kB of in-system programmable Flash memory and 4.25 kB of RAM. Key peripherals include a full-speed USB 2.0 function controller with an integrated transceiver and clock recovery, a 10-bit ADC supporting up to 200 ksps, two analog comparators, and multiple digital communication interfaces such as UARTs, SPI, and SMBus. It operates within a 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 function controller with on-chip clock recovery and transceiver, eliminating the need for external crystals or resistors.
• High-performance 8051-compatible core delivering up to 48 MIPS throughput via a pipelined instruction architecture.
• On-chip debug circuitry enabling non-intrusive in-system debugging without requiring external emulator hardware.
• Flexible I/O configuration through a programmable digital crossbar allowing peripheral pin mapping.

Applications

• PC peripherals
• Point-of-sale (POS) terminals
• Medical diagnostic equipment
• Embedded modems

Procurement Notes

Verify the specific suffix 'GM' corresponds to the 32-pin QFN package variant when ordering. Confirm that the design accounts for the manufacturer's recommendation regarding new designs for this MCU family. Ensure compatibility with existing firmware development tools and debug adapters specified for the C8051F series.

Selection Notes

Select this model for applications requiring robust USB connectivity combined with mixed-signal processing capabilities. The 64 kB Flash size accommodates complex firmware, while the integrated USB transceiver reduces bill of materials count. Consider the 48 MIPS performance for real-time control tasks and utilize the programmable crossbar for flexible board layout constraints.

Part Context

This component is part of the C8051F34x Full Speed Flash MCU family by Silicon Labs. The family is designed as a single-chip solution for embedded USB applications, integrating CPU, memory, analog peripherals, and USB controllers. The C8051F34A variant specifically offers the higher memory capacity and 48 MHz core speed options available within this series.

Replacement Considerations

Direct substitutes within the same family include C8051F340, C8051F341, C8051F342, C8051F343, C8051F344, C8051F345, C8051F346, C8051F347, C8051F348, C8051F349, C8051F34B, C8051F34C, and C8051F34D. Differences primarily involve package type (TQFP, LQFP, QFN) and minor peripheral variations.