https://devzone.nordicsemi.com/f/nordic-q-a/100465/best-comunication-type-between-multiple-nrf-5340-chipsHello, what type of synchronous communication would be best for communication between nRF5340 chips ? The chips will be close to each other about 20-30 mm apart. The idea is that 3 chips send data to the fourth with the highest possible speed. en-USTelligent Community 13Mon, 05 Jun 2023 08:58:41 GMThttps://devzone.nordicsemi.com/thread/429206?ContentTypeID=1Mon, 05 Jun 2023 08:58:41 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c71bdef7-907d-4aab-bd5b-656d1f62fe26Jared<p>Hi there,</p> <p>What kind of application are you making?</p> <p>Without knowing anything about your application I would suggest using the SPI protocol, the nRF5340 has a SPI master peripheral (SPIM) and a SPI slave peripheral (SPIS) with fully compatible drivers in nrfx.</p> <p>You can use the same MOSI,MISO and SCLK but need a separate CS for each device. Note that each device on the line will add capacitance making it harder to drive the line. You might need to lower the frequency for it to work if the added capacitance is too high.&nbsp;</p> <p>regards</p> <p>Jared&nbsp;</p><div style="clear:both;"></div>