ماژول USB HOST CH374U 3 PORT:
CH374 is a universal interface chip for USB bus, supports USB-HOST host mode and USB-DEVICE / SLAVE device mode, built-in 3-port HUB root hub, supports low-speed and full-speed control transmission, batch transmission, interrupt transmission and synchronization / isochronous Transmission, cansupport the operation control of 3 devices at the same time, can connect USB mouse keyboard printer and other devices. At the local end, CH374 has an 8-bit data bus and read, write, chip select control lines, and interrupt output, which can be easily connected to the system bus of a microcontroller / DSP / MCU / MPU controller. In addition, CH374 also provides a SPI serial communication method that saves I / O pins. It is connected to a single-chip computer / DSP / MCU / MPU through a 3-or 4-wire SPI serial interface and interrupt output.