Welcome to my store , Hope you have a pleasant shopping trip!Description: It is a USB to I2C/IIC/SPI/UART/TTL/ISP Converter Module CH341A USB Adapter Signal Communicator.Feature: 1>.Full-speed USB device interface, compatible with USB V2.0, Standard USB-A male design; 2>.Direct power supply from USB connectin to PC.Analogue standard serial port, for upgrading original serial peripherals, or increased additional serial port via USB; 3>.Support 3.3V and 5V TTL target system, the serial application is fully compatible with the computer under the Windows operating system, without need for modification; 4>.Support a variety of serial communication mode, UART, IIC, SPI, etc.; 5>.Support 2-wire and 4-wire synchronous serial interface, IIC support 4 kinds of transmission speed; 6>.Support the outwards output voltage, optional 3.3V/ 5V or no output; 7>.Support working status indication; 8>.Dual interface output; Parameter: 1>.Model: CH341A USB 2>.Work voltage: 5V 3>.Work Temperature: -25~85 4>.Work Humidity: 5%~95%RH 5>.Size: 55*33mmInterface: 1>.SPI interface(XH2.54MM Male pin): MISO/MOSI/SCK/CS2/CS1/CS0/VDD/GND 2>.IIC interface(PH2.0MM Socket): SCL/GND/VDD/ I/O 3>.UART interface(PH2.0 Socket): VDD/RXD/TXD/GND 4>.IIC and UART interface(XH2.5MM Male pin): SCL/GND/VDD/SDA/CTS/RTS/TNOW/VDD/RXD/TXD/GNDPackage List: 1 x USB to IIC/SPI/UART/TTL/ISP Converter Module About this item Full-speed USB Device Interface, Compatible With USB V2.0, Standard USB-A Male Design. Support 3.3V and 5V TTL Target System, the Serial Application Is Fully Compatible With the Computer Under the Windows Operating System, Without Need For Modification. Support A Variety of Serial Communication Mode, UART, IIC, SPI, Etc. Support 2-wire and 4-wire Synchronous Serial Interface, IIC Support 4 Kinds of Transmission Speed. SHOP WITH CONFIDENCE: To provide you with the highest quality service, If you have any question, please feel free to contact us.We will provide after-sales service until you are satisfied. Full-speed USB Device Interface, Compatible With USB V2.0, Standard USB-A Male Design. Support 3.3V and 5V TTL Target System, the Serial Application Is Fully Compatible With the Computer Under the Windows Operating System, Without Need For Modification. Support A Variety of Serial Communication Mode, UART, IIC, SPI, Etc. Support 2-wire and 4-wire Synchronous Serial Interface, IIC Support 4 Kinds of Transmission Speed. SHOP WITH CONFIDENCE: To provide you with the highest quality service, If you have any question, please feel free to contact us.We will provide after-sales service until you are satisfied.