https://devzone.nordicsemi.com/f/nordic-q-a/123806/nrf-52840-spim3-slew-rate-issue-at-16-mhzI&#39;ve been trying to communicate with an external device which supports up to 25 Mhz on its SPI. So, to improve performance, I&#39;m using the SPI3 at 16 Mhz. I have no issue at 8 Mhz but, when doubling the speed, the slew rate on the clock behaves weirdlyen-USTelligent Community 13Wed, 20 Aug 2025 06:47:40 GMThttps://devzone.nordicsemi.com/thread/546127?ContentTypeID=1Wed, 20 Aug 2025 06:47:40 GMT137ad170-7792-4731-bb38-c0d22fbe4515:e9d15e32-305f-466e-8e70-dda9973656a3Sam-IIT<p>do you mean the&nbsp;CONFIG_NRF52_ANOMALY_198_WORKAROUND ? in that case i do have it in my conf file. if there is something different could you point me to it? thanks!</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/546083?ContentTypeID=1Tue, 19 Aug 2025 15:05:54 GMT137ad170-7792-4731-bb38-c0d22fbe4515:1fc18b78-3346-4f3f-bc8c-f343308fe663Turbo J<p>You probably missed the errata that makes the fast SPI peripherial basically unusable on an NRF52840.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/546074?ContentTypeID=1Tue, 19 Aug 2025 14:32:51 GMT137ad170-7792-4731-bb38-c0d22fbe4515:261014ec-541f-4d92-b0dd-6754abac171aSam-IIT<p>That did the trick, thanks! Is there any documentation about this point? I still get some weird data and I want to check if I&#39;m missing something else.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/546035?ContentTypeID=1Tue, 19 Aug 2025 11:49:24 GMT137ad170-7792-4731-bb38-c0d22fbe4515:96349cb9-7843-40d0-be1c-4770cd93d8f3Turbo J<p>Check that high drive mode is enabled in DTS overlay: Its the&nbsp;<code>nordic,drive-mode = &lt;NRF_DRIVE_H0H1&gt;; </code>entry in the pin confg group.</p> <p>This setting is not enabled by default. You can also check the corresponding pin cfg bits in the debugger.</p><div style="clear:both;"></div>