C8051F346-GMR

Overview

The C8051F346-GMR is a 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. The device integrates 64 kB of in-system programmable Flash memory and 2304 bytes 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 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 temperature ranges.

Feature Summary

• Integrates a high-speed 8051 CPU with up to 48 MIPS performance and on-chip debug capabilities for non-intrusive system debugging.
• Features a fully integrated USB 2.0 function controller with built-in transceiver and clock recovery, eliminating the need for external components.
• Includes analog peripherals such as a multi-channel 10-bit ADC with a built-in temperature sensor and dual comparators.
• Provides flexible digital I/O with a programmable crossbar and supports various serial communication protocols including UART, SPI, and SMBus.

Applications

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

Procurement Notes

Verify the specific suffix 'GMR' against the manufacturer's current documentation to confirm packaging type and reel specifications. Confirm that the component status remains active or acceptable for your design lifecycle, as this series may be marked as not recommended for new designs. Ensure compatibility with existing PCB footprints for the 32-pin LQFP package.

Selection Notes

Select this model when a complete single-chip USB solution is required without external PHY components. It is suitable for applications needing moderate Flash memory capacity and analog signal processing capabilities. Consider the 48 MHz core speed if higher instruction throughput is necessary compared to lower-end variants in the same family.

Part Context

This part belongs to the C8051F34x Full Speed Flash MCU family, which are fully integrated mixed-signal SoCs designed specifically for USB applications. The family shares common architectural features but varies in memory size, package options, and specific peripheral configurations. The C8051F346 variant specifically utilizes a 32-pin LQFP package.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material. Consult official Silicon Labs documentation for any officially designated replacement devices within the C8051F3xx series or newer generations.