Internal Pull-up resistance on GPIO of nRF51822https://devzone.nordicsemi.com/f/nordic-q-a/25873/internal-pull-up-resistance-on-gpio-of-nrf51822Hi, the pull-up resistance Rpu of GPIO pins as stated in Product Specification v3.1 in Table 62 is supposed to be 13 kOhm (typ). Since we measured a different value on pin n_RESET/SWDIO - does the stated resistance apply to n_RESET/SWDIO? Thank yen-USTelligent Community 13Fri, 27 Jul 2018 06:44:58 GMTRE: Internal Pull-up resistance on GPIO of nRF51822https://devzone.nordicsemi.com/thread/141600?ContentTypeID=1Fri, 27 Jul 2018 06:44:58 GMT137ad170-7792-4731-bb38-c0d22fbe4515:74ba2fcc-c042-4faf-af1e-5cf5ea688120cp52<p>Other considerations for pull ups here:</p> <p><a href="https://devzone.nordicsemi.com/f/nordic-q-a/36881/best-practice---delay-between-setting-pin-as-input-with-pull-up-pull-down-and-reading-the-pin">devzone.nordicsemi.com/.../best-practice---delay-between-setting-pin-as-input-with-pull-up-pull-down-and-reading-the-pin</a></p><div style="clear:both;"></div>RE: Internal Pull-up resistance on GPIO of nRF51822https://devzone.nordicsemi.com/thread/101901?ContentTypeID=1Thu, 12 Oct 2017 13:43:33 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b9d63b32-d6fb-445f-8474-bc0aaac97e99MartinBL<p>Hi,</p> <p>Under normal operating conditions (supply voltage higher than &gt;1.8V ) the pull-up resistance on SWDIO should be typ. 13 kOhm and max 17 kOhm. However, if the supply voltage is lower than that you might measure resistances more than 10 times higher.</p><div style="clear:both;"></div>