https://devzone.nordicsemi.com/f/nordic-q-a/38598/nrf52832-i2c-frequency-issueHi team, My customer needs to make some adjustment on I2C frequency due to their SW requirement. As our reference on datasheet, I2C frequency needs to be 100kbps, 250kbps and 400kbps, but customer has changed &quot;Frequency&quot; registor to 0x27000 to makeen-USTelligent Community 13Mon, 17 Sep 2018 17:48:29 GMThttps://devzone.nordicsemi.com/thread/149106?ContentTypeID=1Mon, 17 Sep 2018 17:48:29 GMT137ad170-7792-4731-bb38-c0d22fbe4515:1119e9f5-6d58-4d3e-b000-9355be00909bKenneth<p>Hi Leon,</p> <p>It&#39;s not been tested. They should also check out this errata issue:<br /><a href="http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.nrf52832.Rev1.errata/anomaly_832_149.html?cp=2_1_1_1_1_42">http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.nrf52832.Rev1.errata/anomaly_832_149.html?cp=2_1_1_1_1_42</a>&nbsp;</p> <p>You may also check out the&nbsp;twi_sw_master.c that is a software implemented twi master.</p> <p>Best regards,<br />Kenneth</p><div style="clear:both;"></div>