C8051F344-GQR

Overview

The C8051F344-GQR is a mixed-signal System-on-Chip microcontroller from the Silicon Labs C8051F34x family, designed for embedded USB applications. It features a high-speed pipelined 8051 core operating at up to 48 MIPS and includes 64 kB of in-system programmable Flash memory alongside 4352 bytes of RAM. The device integrates a full-speed USB 2.0 function controller with an on-chip transceiver and clock recovery, eliminating the need for external components. Analog peripherals include a 10-bit ADC with up to 200 ksps sampling rate, two comparators, and a temperature sensor. Digital interfaces comprise SPI, SMBus, and dual UARTs. It operates within a voltage range of 2.7 V to 5.25 V and supports industrial temperatures from -40 °C to +85 °C.

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 high-performance pipelined 8051-compatible core capable of executing instructions in one or two system clocks, providing efficient processing power.
• Includes a 10-bit analog-to-digital converter with built-in multiplexer supporting single-ended and differential modes, along with internal voltage reference options.
• Provides flexible digital I/O configuration through a programmable digital crossbar and priority decoder, allowing peripheral pin assignment flexibility.

Applications

• PC peripherals requiring USB connectivity
• Point-of-sale (POS) terminals
• Embedded modems
• Voice over Internet Protocol (VoIP) telephones

Procurement Notes

Verify component status before design implementation as this series is marked Not Recommended for New Designs. Confirm package type matches the 48-pin TQFP specification. Ensure development tools support the CIP-51 architecture. Check for available replacement families if long-term supply is required. Validate voltage regulator settings for the specific application power requirements.

Selection Notes

Select this model when a complete USB solution is needed without external PHY components. The 48-pin TQFP package suits designs requiring extensive I/O. Consider the 48 MIPS performance for complex protocol handling. Verify that the 64 kB Flash capacity meets firmware storage needs. Ensure the 10-bit ADC resolution aligns with signal conditioning requirements.

Part Context

This component belongs to the C8051F34x Full Speed USB Flash MCU family by Silicon Laboratories. The family shares common architectural features including the CIP-51 core and integrated USB controller. Variants within the series differ primarily in memory size, package type, and specific peripheral availability. The C8051F344 specifically utilizes the 48-pin TQFP package format.

Replacement Considerations

Public confirmed substitute part numbers: C8051F340-GQR, C8051F341-GQR, C8051F342-GQR, C8051F343-GQR, C8051F345-GQR, C8051F346-GQR, C8051F347-GQR, C8051F348-GQR, C8051F349-GQR, C8051F34A-GQR, C8051F34B-GQR, C8051F34C-GQR, C8051F34D-GQR.