Voltage Range Specifications for MAGPIO, SIM Interface, nRESET, ENABLE and SWD Interface

[ShaunR]

Hello,

I have been looking through Nordic's documentation for the nRF9160 and trying to find voltage ranges for several pins but am having no luck. Can someone please answer the following questions:

What are the VIH and VIL ranges for the following input pins:

nRESET, ENABLE, SWDCLK

What are the VOH and VOL ranges for the following output pins:

SIM_RST, SIM_CLK

What are the VIH, VIL, VOH, and VOL ranges for the following bidirectional pins:

MAGPIO(2-0), SWDIO, SIM_IO

Thanks for your time!

[Amanda Hsieh]

Hi Shaun, 

The VDD in this equation is the VDD in that segment of GPIOs.
So if the supply for the GPIOs are 1.8V, this is the VDD used in the equations.
To guarantee a "low" input it should be below: VILmin = 0.3xVDD = 0.54V.
To guarantee a "high" input it should be above: VIHmax = 0.7xVDD = 1.26V.

-Amanda H.

[ShaunR]

Hi Amanda,

Gotcha, makes sense! That answers all of my questions then.

Thank you again for your help!

- ShaunR