What kind of input protection does the nrf51822 have ?

[Gus S. Calabrese]

What kind of input protection does the nrf51822 have ? I am particularly interested in the ADC inputs.

Thank you

[Gus S. Calabrese]

Thank you Ole Morton ....... I had already seen the data you suggested.

I would like to find out if the inputs have protection diodes and if so, what amount of current will they tolerate. Or perhaps the inputs have a different geometry. I would like as many details as I can get. I have found these kind of details about other chips and find such information useful. Gus

[Håkon Alseth]

Hi Gus,

The GPIOs have an over-voltage protection circuit. If you go outside the maximum ratings, -0.3V or VDD+0.3V, then you may trigger the over-voltage diode(s) and blow the GPIO. Then the GPIO will be shorted either to VDD or VSS, and you will get an excessive current draw.

Best regards Håkon