From Saturday, Nov 23rd 7:00 PM CST - Sunday, Nov 24th 7:45 AM CST, ni.com will undergo system upgrades that may result in temporary service interruption.
We appreciate your patience as we improve our online experience.
From Saturday, Nov 23rd 7:00 PM CST - Sunday, Nov 24th 7:45 AM CST, ni.com will undergo system upgrades that may result in temporary service interruption.
We appreciate your patience as we improve our online experience.
250 kHz I2C,12 MHz SPI I2C/SPI接口设备—NI USB‑8451是一款主接口,用于连接集成电路(I2C)、系统管理总线(SMBus)和串行外设接口(SPI)设备并与其进行通信。 USB‑8451具有即插即用的USB连接,是一款用于与消费电子产品或集成电路通信的便携式解决方案。 它还包括八条通用数字I/O线,可用于各种应用,比如配置I2C设备的地址或切换LED。 相比PCI接口,USB‑8451可以安装在更靠近I2C/SPI设备的位置,从而减少I2C总线长度并最大程度减少噪声问题。 此外,该接口无需外部电源,就可为电源电路提供+5 V和GND电压。
No longer available. Suggested replacement: