New USB device for I2 and SPI communication - February 2006

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New USB device for I² and SPI communication

February 2006 Maintenance, Test & Measurement, Calibration

National Instruments is offering a new USB device for use with inter-integrated circuit (I²C) and serial peripheral interface (SPI) communication devices. Engineers and scientists can use the new NI USB-8451 interface with NI LabVIEW software to easily create programs to test, validate and program devices such as analog-to-digital converters (ADCs) and EEPROMs. Because the module operates on the USB bus, it offers plug-and-play set-up and is good for use in close proximity to the system components.

Many consumer electronics such as DVD players and computer motherboards contain hundreds of components that work with each other and communicate through I²C or SPI. Previously, engineers often faced programming challenges when implementing I²C and SPI protocols for use with digital I/O boards. The new USB-8451 interface includes driver software that provides high-level, easy-to-use LabVIEW functions for quickly developing applications without requiring in-depth knowledge of I²C and SPI communications.

In addition to providing both I²C and SPI communication, the new USB-8451 also includes eight digital lines for general-purpose I/O and is capable of full-speed USB connectivity. The USB-8451 interface is ideal for applications involving consumer electronics such as programming, testing and communicating with devices including LCDs, ADCs and sensors.

Hardware design engineers can use the USB-8451 interface to test and validate component prototypes. For example, engineers wanting to validate the functionality of a microcontroller that includes I²C or SPI communication lines no longer need to place the microcontroller on the printed circuit board (PCB) and hope that it interacts well with the other components. Instead, they now can send I²C or SPI commands to the microcontroller through the USB-8451 interface to validate its functionality before placing it on the PCB.

About National Instruments

National Instruments (www.ni.com) is a technology pioneer and leader in virtual instrumentation - a concept that has changed the way engineers and scientists in industry, government and academia approach measurement and automation. Using PCs and commercial technologies, virtual instrumentation increases productivity and lowers costs for test, control and design applications through easy-to-integrate software, such as NI LabVIEW, and modular measurement and control hardware for PXI, PCI, USB and Ethernet. Headquartered in Austin, Texas, NI has more than 3700 employees and direct operations in nearly 40 countries. In 2004, the company sold products to more than 25000 companies in 90 countries.

For more information contact Michael Hutton, National Instruments SA, 0800 203 199, ni.southafrica@natinst.co.za, www.natinst.co.za

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Maintenance, Test & Measurement, Calibration

New USB device for I² and SPI communication

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