C8051F343-GM

Overview

The C8051F343-GM is a high-speed 8-bit microcontroller from the Silicon Labs C8051F34x family, featuring a pipelined CIP-51 core operating at up to 48 MIPS. It integrates 32 kB of in-system programmable Flash memory and 2304 bytes of RAM. The device includes a full-speed USB 2.0 function controller with an integrated transceiver and clock recovery, eliminating the need for external components. Analog peripherals consist of a 10-bit ADC supporting up to 200 ksps and two analog comparators. Digital interfaces include hardware-enhanced SPI, SMBus, and UARTs. It operates within a voltage range of 2.7 V to 5.25 V and supports temperatures from –40 °C to +85 °C.

Feature Summary

• Integrated full-speed USB 2.0 function controller with on-chip transceiver and clock recovery
• High-performance pipelined 8051 core delivering up to 48 MIPS throughput
• On-chip debug circuitry enabling non-intrusive in-system debugging without external emulators
• Flexible pin mapping via priority crossbar decoder with 5 V tolerant I/O

Applications

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

Procurement Notes

Verify the specific suffix 'GM' corresponds to the 32-pin QFN package variant as defined in the official datasheet. Confirm that the component meets the required industrial temperature range specifications. Ensure compatibility with existing design tools and compilers such as Keil C51. Check for any end-of-life notices or obsolescence warnings associated with this part number before finalizing procurement plans.

Selection Notes

Select this MCU for applications requiring robust USB connectivity combined with mixed-signal processing capabilities. The integrated USB transceiver reduces bill of materials complexity by removing external resistors and crystals. Consider the 32 kB Flash size for firmware requirements and verify that the 2304 byte RAM suffices for data handling. The 5 V tolerant I/O simplifies interfacing with legacy digital systems.

Part Context

This component belongs to the C8051F34x series of full-speed USB flash MCUs. It shares architectural similarities with other members like the C8051F340 and C8051F342 but differs in memory configuration and package options. The series is designed for cost-sensitive and high-end applications needing USB integration. Note that the datasheet marks this family as not recommended for new designs.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.