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GPIO pin behavior during JTAG programming

Question asked by jeffrey zhang on May 9, 2018
Latest reply on May 9, 2018 by AvaTar

Hi,

 

this question may be hardware related. I saw some weird power ripple when I programming the STM32L4 device with JTAG. so can anyone explain what are GPIO status during JTAG programming? will it draw high current or less current compare to normal status?

Thanks,

Jeff

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