Regarding Buttons on nrf52832 MCU Reference Design

RE: Regarding Buttons on nrf52832 MCU Reference Design

Andreas — Tue, 17 Apr 2018 07:27:07 GMT

Hi,

Look at the layout. I suppose it was not done to avoid a cumbersome routing from the net between R6 and R8 to the second pin, like shown in green.

Best regards,

Andreas

RE: Regarding Buttons on nrf52832 MCU Reference Design

Akash Kamble — Tue, 17 Apr 2018 05:40:18 GMT

[quote userid="9102" url="~/f/nordic-q-a/33374/regarding-buttons-on-nrf52832-mcu-reference-design/128454"]From which of our reference designs have you taken this?[/quote]

I found the reference design at

https://github.com/NordicPlayground/nrf5-eagle-reference-design/blob/master/nRF52832_MCU_Board/nRF52832_MCU.sch

[quote userid="9102" url="~/f/nordic-q-a/33374/regarding-buttons-on-nrf52832-mcu-reference-design/128454"]it should not matter as the terminals are connected internally[/quote]

Of course they are connected internally but still I was curious of it.

Thanks

RE: Regarding Buttons on nrf52832 MCU Reference Design

Andreas — Mon, 16 Apr 2018 12:00:38 GMT

Hi,

From which of our reference designs have you taken this? I am not able to find this in either our reference circuit, any of our reference designs or DK designs.

I suspect R16 and R17 are added as a pre-caution in case the pin is driven high as an output and the button is pressed. If you avoid this you should not need the series resistors. As for the difference in button connections I do not know as I do not know which design you are pointing to, but it should not matter as the terminals are connected internally.

Best regards,

Andreas