C8051F347-GM

Overview

The C8051F347-GM is a mixed-signal system-on-chip microcontroller from Silicon Labs, belonging to the C8051F34x family. It features an 8-bit 8051 core operating at up to 25 MHz with 32 kB of Flash memory and 2.25 kB of RAM. The device integrates a full-speed USB 2.0 controller, a 10-bit ADC with up to 200 ksps sampling rate, two comparators, and an internal voltage reference. 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. The component is housed in a 32-pin LQFP package.

Feature Summary

• Integrates a high-speed pipelined 8051 core capable of executing most instructions in one or two system clocks.
• Includes a full-speed USB 2.0 function controller with integrated transceiver and clock recovery.
• Features a 10-bit analog-to-digital converter with built-in multiplexer and temperature sensor.
• Provides on-chip debug circuitry for non-intrusive in-system debugging without external emulators.

Applications

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

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and temperature grade. Confirm that the component status aligns with project lifecycle requirements, as this series may be designated as not recommended for new designs. Ensure compatibility with existing PCB footprints and programming interfaces before finalizing procurement.

Selection Notes

Select this component when a fully integrated solution combining USB connectivity with analog signal processing is required. The 32 kB Flash capacity suits applications needing moderate code storage. Verify that the 25 MHz performance meets real-time processing demands. Consider the 32-pin LQFP package constraints for board space limitations and thermal management requirements during the design phase.

Part Context

This part belongs to the C8051F34x family of full-speed USB flash microcontrollers. It shares architectural similarities with other members like the C8051F346 and C8051F349 but differs in memory size and peripheral configuration. The family utilizes the CIP-51 core and offers footprint compatibility across certain variants within the same package style.

Replacement Considerations

Consult official substitution lists for direct replacements. Cross-reference pinouts and electrical characteristics carefully when considering alternative MCUs from different manufacturers.