C8051F349-GMR

Overview

The C8051F349-GMR is an 8-bit mixed-signal System-on-Chip microcontroller from the Silicon Labs C8051F34x family. It features a high-speed pipelined 8051-compatible core operating at up to 48 MIPS, paired with 32 kB of in-system programmable Flash memory and 2304 bytes 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 25 port I/O pins, hardware-enhanced SPI, SMBus, and dual enhanced UARTs. Analog capabilities consist of two comparators and a temperature sensor. The MCU supports a supply voltage range of 2.7 V to 5.25 V and operates within a temperature range of –40 °C to +85 °C.

Feature Summary

• Integrates a high-speed 8051-compatible CPU with up to 48 MIPS performance and 32 kB Flash memory.
• Includes a fully compliant USB 2.0 function controller with integrated transceiver and on-chip clock recovery.
• Features a programmable digital crossbar for flexible peripheral-to-pin mapping and 5 V tolerant I/O.
• Provides non-invasive in-system debugging via the C2 interface without requiring external emulators.

Applications

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

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific suffix 'GMR' corresponds to the required tape-and-reel packaging format. Check current lifecycle status as this series may be designated Not Recommended for New Designs. Ensure compliance with RoHS and REACH regulations relevant to your region before finalizing procurement orders.

Selection Notes

Select this part when a cost-effective USB connectivity solution is required alongside moderate processing power. The 32 kB Flash variant suits applications with smaller firmware footprints compared to the 64 kB models. Verify that the 25 available GPIO pins meet system interface requirements. Consider the integrated voltage regulator if operation above 3.6 V is necessary using the internal regulator mode.

Part Context

This component belongs to the C8051F34x Full Speed Flash MCU family, designed for embedded USB applications. It shares architectural similarities with other members like the C8051F340 and C8051F342 but differs in memory size and package options. The family emphasizes high integration by combining analog, digital, and USB functions on a single chip to reduce external component count.

Replacement Considerations

Public confirmed substitute part numbers: None identified.