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Nordic NRF51822 flashing

Dear all We did nordic beacon board in that we not able to flash the device We are checked core voltage 1.2V and 1.7V are coming .But i want to confirm external CLOCK will generate before code is flashing or after code is flashed then only this clock can turn on.

Regards naga

  • Dear All I am facing issues on nRF51822 nordic chip We make Pcb with chip antenna (W3008 ) .We are flashed the our beacon code . The device is no detected .Could you please me the issues I am attaching the my schematic and board files nrf51822-pcb.JPG

    Layer Stack up layer 1 top components layer 2 ground layer 3 power layer 4 Bottom Board thickness 1.6mm ST balun chip balu chip output track width is 25 mils
    Please give me your commands on this issues

  • Hi,

    Have you tried connecting a spectrum analyzer to the output of the balun? Also where is your pi-network to match the chip antenna to 50ohm? Please see the general PCB design guidelines, it contains a lot of useful information on designing your layout.

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