FT122T-U

Controllers Overview

The FT122T-U is a USB device controller integrated circuit manufactured by Future Technology Devices International Ltd. It provides a high-performance interface between a host computer and an external microcontroller or FPGA via a generic parallel bus. The device integrates a Serial Interface Engine (SIE), endpoint buffer, transceiver, and voltage regulators. It supports USB 2.0 Full Speed compatibility and operates on a single power supply of 3.3V or 5V. The component features internal 1.8V and 3.3V LDO regulators and a power-on-reset circuit. It is available in Pb-free TSSOP-28 and QFN-28 packages and supports an extended operating temperature range from -40°C to 85°C.

Controllers Feature Summary

• Integrates USB 2.0 Full Speed compatible controller with SIE, transceiver, and regulators
• Supports 8-bit parallel interface for communication with external microcontrollers
• Includes internal 1.8V and 3.3LDO regulators and power-on-reset circuitry
• Features dedicated programmable clock output pin

Controllers Applications

• Providing USB ports to microcontrollers
• Providing USB ports to FPGAs
• USB industrial control systems
• Mass storage data transfers for embedded medical and test instrumentation

Controllers Procurement Notes

Verify the specific suffix 'U' against the manufacturer's official documentation to confirm package type and temperature grade. Ensure the selected variant matches the required operating environment and physical footprint constraints for the target design.

Controllers Selection Notes

Select this component when a direct USB-to-parallel bridge is required for microcontroller or FPGA integration. Consider the FT122T-U for applications needing integrated voltage regulation and support for both bulk and isochronous transfer modes within an extended temperature range.

Controllers Part Context

The FT122T-U belongs to the FT120 series of USB controllers developed by Future Technology Devices International Ltd. This series is designed to simplify USB implementation in embedded systems by providing a ready-made solution that replaces discrete USB PHY and controller components, reducing board space and design complexity.

Controllers Replacement Considerations

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