https://devzone.nordicsemi.com/f/nordic-q-a/10248/nrf5x-connection-with-smartcard-iso7816-via-usartHello, Is it possible to configure nRF&#39;s USART to work with Smartcards (ISO 7816)? The ISO7816 specification defines the bit rate with the following formula: B=(Di/Fi)*f ,where: B is the bit rate, Di is the bit-rate adjustment factor, Fi is the clocken-USTelligent Community 13Fri, 20 Nov 2015 12:30:07 GMThttps://devzone.nordicsemi.com/thread/38052?ContentTypeID=1Fri, 20 Nov 2015 12:30:07 GMT137ad170-7792-4731-bb38-c0d22fbe4515:2065d756-25be-4e3f-b2ea-cc098aa8fbb4Valer_I<p>Ok, now I see, thank you!</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/38051?ContentTypeID=1Mon, 16 Nov 2015 13:32:19 GMT137ad170-7792-4731-bb38-c0d22fbe4515:e3e7d949-7275-457e-9973-889662d188b9Einar Thorsrud<p>Neither the nRF51 nor the nRF52 has USART (universal synchronous/asynchronous receiver/transmitter), only UART. I do not know of any example on using the nRF51/52 to communicate with a smart card. An option could be to use a smart card interface IC or bit-banging.</p><div style="clear:both;"></div>