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what thing can damage nrf51822 chip?

i was working with a nrf51822 module.after about 50 that i programmed the chip with my jlink programmer (some time i program it with stlink V2) it be damaged and not worked!i do not know why?!! some think like static electricity can effect to it?! please help me!

Parents
  • I connect vcc to 3.3volt and connect gnd and swdio and swclk and at the begin it programmed successfully.the limit was 500mA and at first i can see it in nrfgo stuido.and about static electricity i have no idea and i do not try to remove it!my programmer clockspeed in keil was 10MHz and my error is no cortex m0 founded and all connection is true!

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  • I connect vcc to 3.3volt and connect gnd and swdio and swclk and at the begin it programmed successfully.the limit was 500mA and at first i can see it in nrfgo stuido.and about static electricity i have no idea and i do not try to remove it!my programmer clockspeed in keil was 10MHz and my error is no cortex m0 founded and all connection is true!

Children
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