National Instruments USB-8451 USB I2C/SPI Interface
Features
- I2C Master Interface with Clock Rates up to 250 kHz
- SMBus Master Interface with Clock Rates up to 100 kHz
- SPI Master Interface with Clock Rates up to 12 MHz
The National Instruments USB-8451 USB I2C/SPI Interface is an interface for connecting to and communicating with I2C, SMBus, and SPI devices. With plug-and-play USB connectivity, the USB-8451 is a portable solution to communicate with consumer electronics and integrated circuits. It also includes eight general-purpose digital I/O lines for a variety of applications, such as configuring the address of I2C devices or toggling LEDs. The USB-8451 can be physically located more closely to I2C/SPI devices than PCI interfaces, reducing I2C bus length and minimizing noise problems. Additionally, the interface provides +5 V and GND to power circuits up to 230 mA with no external power supply.
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