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Product Parameters

1.2X8 connector, convenient for hanging with MCU

2. Depending on the jumper selection, it can work in parallel or serial mode

3. USB status indicator light

4. Onboard 3.3V LDO 1117, providing a maximum current of 500MA

5. The 5V power supply is supplied by the target board

6.12MHZ crystal oscillator

Product Instructions

Introduction to the main control chip

The module uses the CH375 chip, which is a universal interface chip for USB bus that supports USB-HOST host mode and USB-DDEVICE/SLAVE device mode. On the local end, CH375 has an 8-bit data bus, read, write, chip select control lines, and interrupt outputs, which can be easily connected to the system bus of microcontrollers/DSP/MCU/MCU and other controllers. In USB host mode, CH375 also provides serial communication mode, connecting with microcontrollers/DSP/MCU/MCU through serial input, serial output, and interrupt output.

The USB device mode of CH375 is fully compatible with the CH372 chip, and CH375 includes all the functions of CH372. The instructions for CH375 in USB device mode can refer to the CH372 manual CH372D1.PDF.

The USB host mode of CH375 supports commonly used USB full speed devices, and external microcontrollers can communicate with USB devices through CH375 according to the corresponding USB protocol.

CH375 also comes with firmware for a dedicated communication protocol for handling Mass Storage devices. External microcontrollers can directly read and write commonly used USB storage devices (including USB hard drives/USB flash drives/USB drives) on a sector by sector basis.

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