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Taking the scenario where the SoC on-chip oscillator is disabled and the SoC and SiT15xx is powered from 1.8 V. The SoC crystal input expects 1.8 V logic compatible signal levels. For this scenario, a NanoDrive setting of D14 or D26 is recommended. In this example, the full part number is SiT15xxAI-x4-D14-32.768. This device will provide a swing of 700 mV consuming approximately 1/3rd of the output driver power compared to a 1.8 V CMOS output device.

PTM Published on: 2017-03-10