https://devzone.nordicsemi.com/f/nordic-q-a/23094/what-is-the-use-of-atsam3u2ca-au-in-pca10040Hello, I was going through the schematic of PCA10040 and I see that the nRF52832 is interfaced to an ATSAM3U2CA-AU. I was under an assumption that nRF52832 itself is a chip with arm core. Why is the additional ARM core used on the board. Sorry am aen-USTelligent Community 13Thu, 29 Jun 2017 08:47:28 GMThttps://devzone.nordicsemi.com/thread/90883?ContentTypeID=1Thu, 29 Jun 2017 08:47:28 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a05d8572-697b-4576-b0e0-e55ac9cb9f95J&#248;rgen Holmefjord<p>Happy to help! Please accept the answer by clicking the checkmark next to it if this was helpful!</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/90884?ContentTypeID=1Thu, 29 Jun 2017 08:44:52 GMT137ad170-7792-4731-bb38-c0d22fbe4515:4ac369d4-7edd-4bc6-8599-eb9306420b5cShankar<p>Hello Jorgen,</p> <p>Thanks a lot for the answer. That clarifies the doubt.</p> <p>Regards, Shankar</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/90882?ContentTypeID=1Wed, 28 Jun 2017 07:35:16 GMT137ad170-7792-4731-bb38-c0d22fbe4515:22d68e43-751f-424a-91c5-85a10de4b75dJ&#248;rgen Holmefjord<p>Hi ,</p> <p>The ATSAM3U2CA-AU MCU on the nRF52 DK (PCA10040) is the <a href="http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.nrf52/dita/nrf52/development/nrf52_dev_kit/interf_mcu.html?cp=2_1_3_4">Interface MCU</a>, running either SEGGER J-Link OB or mbed OB interface firmware and is used to program and debug the firmware of the nRF52832 IC.</p> <p>All code in the SDK examples run on the nRF5x IC alone.</p> <p>Best regards,</p> <p>Jørgen</p><div style="clear:both;"></div>