Welcome to the store! 1. Support Mode: USB download module uses SPI interface, supports single, dual, and quad SPI master modes, has configurable target clock speed and data transfer rate up to 28 Mbps for high performance. 2. Multifunctional: USB development board can be used for peripheral connection solutions for mobile phones and tablets, software and hardware encryption, and USB dedicated charging port detection to enable high-current battery charging in portable devices. 3. Features: USB development board supports up to 4 slave pins in SPI master mode and single SPI slave mode. SCK working frequency is as high as 20 MHz. IC interface supports 7-bit address, fully compatible with I2C master or slave mode v2.1 and v3 specifications. 4. Remote Wake-up: USB 2.0 download module supports USB 2.0 pause/resume and remote wake-up functions, as well as battery charging detection. Internal OTP memory is used to store USB vendor ID (VID), product ID (PID), device serial number, product string, and various other vendor-specific data. 5. FT4222H Configuration Mode: USB download module is used for built-in firmware for FT4222H configuration mode, USB current configuration, and VCCIO current selection, integrating the reset circuit of the power switch. Real 3.3 V CMOS drive and TTL input, supporting a wide voltage range.