USB2251-NU-05

The USB2251-NU-05 is a USB-to-I2C bridge controller from NXP Semiconductors. It is used to facilitate communication between USB-based systems and I2C-based systems. The USB2251 chip is the only dedicated USB-to-I2C bridge controller available on the market.

The USB2251-NU-05 application field is vast and versatile. From USB-based sensors to PC-peripheral devices and even embedded system designs, the USB2251-NU-05 bridge controller has become an integral part of many designs. With offerings that include a data rate of up to 400 kbps, a wide bus voltage range, and BIOS support, the USB2251-NU-05 gives developers and designers a powerful and efficient tool that can facilitate the development of complex projects.

The USB2251-NU-05 device uses the latest MSCI-SPI protocol which is based on the I2C-bus Architecture. The standard I2C-bus architecture is a two wire serial communication interface between microcontrollers (or slaves) and a host controller (or master). The USB2251-NU-05 bridge controller effectively substitutes the host controller in this architecture and enables communication between USB devices and I2C devices.

The USB2251-NU-05 working principle is quite simple. It acts as the master in the I2C architecture, and transmits/receives data from the I2C slave devices via the MSCI-SPI protocol. The USB2251-NU-05 provides a “Direct Memory Access” (DMA) mode for data transfer, which significantly increases the data speed. The USB2251-NU-05 also supports multiple control and status registers, and features a 7-bit system address and 10-bit device address.

In summary, the USB2251-NU-05 is a highly efficient and powerful bridge controller offering maximum data rates of 400 kbps. It is suitable for a wide range of applications and designs, and can be used to migrate data between USB and I2C systems using the MSSP-SPI protocol. The USB2251-NU-05 can also be used in embedded system designs and offers support for BIOS, wide voltage ranges and DMA mode for maximum data transfer speed.