- Bus-powered USB interface for I2C, SMBus, and SPI communication; cable included
- Compatible with Windows Vista/XP/2000
- 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
- High-Level API for LabVIEW, LabWindows™/CVI, and Microsoft Visual C/C++ 6.0
- Available in OEM board-only version
- 8 general-purpose digital I/O lines
Data Sheet | Specifications
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The National Instruments USB-8451 is an interface for connecting to and communicating with I2C, SMBus, and SPI devices. With plug-and-play USB connectivity, the NI 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.
The National Instruments USB-6000 prototyping accessory attaches to the 16-position connector of the USB-8451 (non-OEM version) interface. It has a small breadboarding area for custom-defined signal conditioning and prototyping within the housing. You can use up to two accessories per USB-8451 module.
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