U2C-12 Adapter Supported Interfaces

The usb i2c spi interface - U2C-12 adapter which is produced by Diolan allows managing various hardware devices using your PC. U2C-12 Adapter is a USB to I2C master and SPI controller. U2C-12 adapter is assigned to access your hardware from PC using I2C, SPI interfaces. Let us describe the meaning of U2C-12 adapter supported interfaces.

The I2C bus physically consists of 2 active wires and a ground connection. The active wires, called SDA and SCL, are both bi-directional. SDA is the Serial Data line, and SCL is the Serial CLock line.

The I2C bus is a multi-master bus. This means that more than one IC capable of initiating a data transfer can be connected to it. The i2c specification states that the IC that initiates a data transfer on the bus is considered the Bus Master. It is a 4 wire Master-Slave serial interface that operates in Full Duplex.

The SPI bus can operate with a single master device and with one or more slave devices. The SPI bus physically consists of 4 active wires. If the devices on the SPI bus have a chip-select signal it is possible to connect many slave devices to the same SPI bus in parallel. Only one slave may talk to the master at any time, and only its SS may be activated by pulling the Slave Select LOW. The SPI Interface id also supported by usb spi bus host adapter - SPI-10.