C8051F347-GQR

Overview

The C8051F347-GQR is an 8-bit microcontroller from the Silicon Labs C8051F34x family, featuring a high-speed 8051 core operating at 25 MIPS. It integrates 32 kB of Flash memory and 2.25 kB of RAM within a 32-pin LQFP package. 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, two comparators, and a temperature sensor. Digital interfaces include SPI, SMBus, and UARTs, while the I/O ports are 5 V tolerant.

Feature Summary

• Integrates a full-speed USB 2.0 function controller with an on-chip transceiver and clock recovery circuitry, enabling single-chip USB connectivity without external resistors or crystals.
• Features a pipelined 8051 core executing instructions in one or two system clocks, providing efficient processing performance for embedded applications.
• Includes a 10-bit analog-to-digital converter with built-in multiplexer, voltage reference options, and a programmable window detector for signal monitoring.
• Provides flexible digital peripheral configuration through a priority crossbar decoder, allowing hardware-enhanced SPI, SMBus, and UART interfaces to be mapped to various pins.

Applications

• Embedded USB communication devices
• Data acquisition systems
• Portable instrumentation

Procurement Notes

Verify component authenticity by checking manufacturer markings against official datasheet specifications. Confirm package type matches the required 32-pin LQFP form factor. Ensure the specific revision level meets design requirements. Check for end-of-life status as indicated in documentation. Validate that all electrical parameters align with system constraints before integration.

Selection Notes

Select this component when a cost-effective 8-bit MCU with native USB functionality is required. The 32 kB Flash size suits applications with moderate code storage needs. The 25 MIPS execution speed provides adequate processing power for standard control tasks. Consider the 32-pin LQFP package for space-constrained designs requiring surface mount technology. Verify that the 2.7 V to 5.25 V supply range fits the target power architecture.

Part Context

This part belongs to the C8051F34x series of mixed-signal system-on-chip microcontrollers. The series is characterized by its fully integrated USB capabilities and high-performance 8051 cores. Devices in this family share common architectural features such as the CIP-51 core and extensive analog peripherals. The C8051F347 variant specifically offers 32 kB of program memory, distinguishing it from higher-capacity models in the same lineup.

Replacement Considerations

Public confirmed substitute part numbers: C8051F340-GQ, C8051F341-GQ, C8051F342-GQ, C8051F343-GQ, C8051F344-GQ, C8051F345-GQ, C8051F346-GQ, C8051F348-GQ, C8051F349-GQ, C8051F34A-GQ, C8051F34B-GQ, C8051F34C-GQ, C8051F34D-GQ.