CH347

Part: CH347 — WCH (WCH.CN)

Type: High-Speed USB Bridge Chip

Description: The CH347 is a high-speed USB bus bridge chip that provides asynchronous serial ports, I2C synchronous serial interfaces, SPI synchronous serial interfaces, and JTAG interfaces via the USB bus.

Operating Conditions:

Absolute Maximum Ratings:

Key Specs:

• Asynchronous serial ports: 2 high-speed ports
• Asynchronous serial port features: RS485 serial transceiver enable control, hardware flow control, common MODEM handshake signals
• I2C interface: One 2-wire interface (SCL, SDA)
• SPI interface: One 4-wire interface (SCS, SCK/CLK, MISO/SDI/DIN, MOSI/SDO/DOUT)
• JTAG interface: One interface, supporting 4/5/6-wire interfaces (TMS, TCK, TDI, TDO, TRST, SRST)

Features:

• High-speed USB bus bridge
• Provides asynchronous serial ports
• Provides I2C synchronous serial interfaces
• Provides SPI synchronous serial interfaces
• Provides JTAG interfaces

Applications:

• Expanding asynchronous serial ports for computers
• Upgrading ordinary serial devices or MCUs to the USB bus
• Expanding 2-wire or 4-wire synchronous serial interfaces for computers
• Operating devices such as EEPROM, FLASH, and sensors
• Expanding JTAG interfaces for computers
• Operating devices such as CPU

Package:

Note: Dimensions are in mm (millimeters).

Pin center spacing is a nominal value with no error; other dimensional errors are no greater than ±0.2mm.