https://devzone.nordicsemi.com/f/nordic-q-a/14683/spi-master-nrf51422-timingHi, i&#39;m using SPI to transfer data divided into packets of 24 bit from NRF51 to a DAC. The function that allows to send data is: spi_master_send_recv(SPI_MASTER_1, data_vector_tx, 3, data_vector_rx, 0); Analyzing the MOSI signal and the clock signalen-USTelligent Community 13Thu, 23 Jun 2016 14:07:26 GMThttps://devzone.nordicsemi.com/thread/56043?ContentTypeID=1Thu, 23 Jun 2016 14:07:26 GMT137ad170-7792-4731-bb38-c0d22fbe4515:4415f6b3-f185-40bb-a6e9-84897b4e5b35Jorge<p>I think you send 8 bit because it is what is defined as the tx and rx buffer (uint8_t). about the SPI frequency, I read that you shouldn&#39;t use the 8MHz, try with 4MHz instead.</p><div style="clear:both;"></div>