Simplifying USB-to-SPI/I²C Integration with the FT4222HQ from FTDI

The FT4222HQ is a trusted by engineers needing seamless communication between USB 2.0 and serial interfaces such as SPI and I²C.

The FT4222HQ remains widely adopted in embedded and IoT applications for its ease of use and robust performance.

By managing complex USB-to-SPI/I²C transactions internally, it allows developers to focus on their system’s core functions.

Key Technical Features

• USB 2.0 Hi-Speed (480 Mbps) interface
• SPI Master and Slave modes (up to 40 MHz)
• I²C Master functionality
• Multiple channels for flexible system design
• Driver support via FTDI D2XX and LibFT4222 across Windows, Linux, and macOS

The FT4222HQ is a practical choice for embedded designers, test equipment developers, and those integrating custom USB peripherals.