CH376S USB Module U Disk Read Write Module

CH376S USB Module U Disk Read Write Module is a compact and practical solution for adding USB host and device functionality to embedded projects. Developers use it to read and write files directly to USB flash drives or interface with PCs, making data transfer and storage management much simpler in microcontroller-based systems.

Key Features:

• USB Host and Device Modes: Supports both U-disk file access and USB communication with a PC.
• FAT File System Support: Handles FAT12, FAT16, and FAT32 formats, allowing direct file-level access.
• Multiple Interfaces: Works with UART, SPI, or parallel communication depending on system design.
• Simple File Commands: Provides straightforward instructions for file read, write, and directory operations.
• Low Power Consumption: Suitable for portable and low-power embedded devices.
• Wide MCU Compatibility: Interfaces easily with 8-bit, 16-bit, and 32-bit microcontrollers.

Technical Specifications:

• Operating Voltage: 3.3 V to 5 V
• Communication Interfaces: UART, SPI, or 8-bit parallel
• File System: FAT12 / FAT16 / FAT32
• Supported Devices: USB flash drives, USB peripherals in device mode
• Operating Current: Typically < 30 mA (depends on mode and interface)
• Operating Temperature: −40 °C to +85 °C

Mechanical Specifications:

• Module Type: PCB breakout module with onboard CH376S chip
• Connector: Standard USB-A female socket
• Interface Pins: 2.54 mm header pins for breadboard or PCB use
• PCB Material: FR-4 with solder mask protection

Dimensions:

• Length: ~45 mm
• Width: ~18 mm
• Height: ~12 mm (including USB connector)
• Pin Pitch: 2.54 mm standard

Pinout and Wiring:

• VCC: 3.3 V or 5 V power input
• GND: Ground connection
• TX / RX: UART serial interface
• MISO / MOSI / SCK / CS: SPI communication pins
• D0–D7: Parallel bus interface (optional)
• Wiring Tip: Choose either UART, SPI, or parallel mode depending on your MCU design. Keep USB traces short for stability.

Datasheet Reference:

• Refer to the official CH376S datasheet for full register definitions, command sets, and timing diagrams.

Applications:

• Data Logging Systems: Save sensor or machine data directly to USB drives.
• Embedded Storage Solutions: Provide external USB storage in microcontroller projects.
• Firmware Upgrades: Load updates from a U-disk without a PC connection.
• PC–MCU Communication: Use device mode to connect embedded hardware as a USB peripheral.

Equivalent Models:

• CH372: USB interface chip with basic communication functions
• FT232 + MicroSD: Alternative solution using serial-to-USB and SD card modules
• W25Q Series SPI Flash: Useful for embedded storage where USB is not required

Package Includes:

• 1 x CH376S USB Module U Disk Read Write Module