C8051F346-GM

Overview

The C8051F346-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 2304 bytes of RAM. Key peripherals include an on-chip USB 2.0 function controller with integrated transceiver and clock recovery, a 10-bit ADC supporting up to 200 ksps, two comparators, and multiple digital communication interfaces such as UART, SPI, and SMBus. 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 built-in transceiver and clock recovery, eliminating the need for external crystals or resistors.
• High-performance 8051-compatible core delivering up to 48 MIPS execution speed with a pipelined architecture.
• On-chip analog peripherals including a multi-channel 10-bit ADC with an internal temperature sensor and dual comparators.
• Non-volatile Flash memory allowing for in-circuit programming and field upgrades without external EEPROM components.

Applications

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

Procurement Notes

Verify the specific suffix 'GM' corresponds to the QFN-32 package variant when ordering. Confirm that the design accounts for the manufacturer's recommendation regarding new designs for this MCU family. Ensure the selected voltage supply aligns with the 2.7 V to 5.25 V operational range specified in the datasheet.

Selection Notes

Select the C8051F346-GM when a compact 32-pin QFN footprint is required alongside 64 kB of Flash memory. This model provides 25 I/O pins and supports both full-speed and low-speed USB operations. Consider the 48 MIPS performance if higher processing throughput is needed compared to the 25 MIPS variants in the same series.

Part Context

This component is part of the C8051F34x Full Speed Flash MCU family by Silicon Labs. These devices are designed as single-chip solutions for embedded USB applications, combining a fast 8051 CPU with extensive analog and digital peripherals. The family shares a common instruction set and debug interface, facilitating migration between different memory sizes and pin counts within the series.

Replacement Considerations

Compatible substitutes within the same family include C8051F340, C8051F341, C8051F342, C8051F343, C8051F344, C8051F345, C8051F347, C8051F348, C8051F349, C8051F34A, C8051F34B, C8051F34C, and C8051F34D. Verify pin compatibility and memory size requirements before substitution.