CH376 is a chip that helps manage files on USB flash drives or SD cards. It supports different communication interfaces, like 8-bit parallel port, SPI interface, or asynchronous serial port. This chip can be controlled by controllers like MCU/DSP/MPU to access files on U disk or SD card, or communicate with a computer.
Features
- Supports 1.5Mbps low speed and 12Mbps full speed USB communication
- Compatible with USB V2.0; peripheral components only require crystal and capacitor
- Supports USB-HOST host interface and USB-DEVICE device interface
- Allows dynamic switching between host mode and device mode
- Supports control transfer, bulk transfer, and interrupt transfer of USB devices
- Automatically detects connection and disconnection of USB devices, providing event notifications
- Provides a 6MHz SPI host interface, supporting SD card, MMC card, and TF card compatible with its protocol
- Built-in USB control transfer protocol processor for simplifying common control transfers
- Handles dedicated communication protocols for mass storage devices
- Supports USB storage devices with Bulk-Only transport protocol and SCSI, UFI, RBC, or equivalent command set
- Built-in FAT16, FAT32, and FAT12 file system management firmware
- Supports U disk and SD card with a capacity of up to 32GB
- Provides file management functions such as opening, creating, or deleting files, enumerating and searching files, creating subdirectories, and supporting long file names
- Offers file read and write functions for multi-level subdirectories in units of bytes or sectors
- Includes disk management functions like initializing disk, querying physical capacity, querying remaining space, and reading and writing physical sectors
- Provides a 2MB speed 8-bit passive parallel interface for connecting to a single-chip microcomputer
- Offers a 2MB/24MHz speed SPI device interface for connecting to a single-chip microcomputer via SPI serial bus
- Provides an asynchronous serial port with up to 3Mbps speed, supporting a serial interface connected to a single-chip microcomputer with dynamic baud rate adjustment
- Supports 5V, 3.3V, and 3V supply voltages, including low power mode
- Fully compatible with CH372 chip in USB device mode; basically compatible with CH375 chip in USB host mode
- Available in SOP-28 package
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