Now,we are developing one product using MK60DN512VLQ10.When the PCBA first came back we can update the firmware.But now there is one strange problem the reset pin of the MCU outputs the following waveform.
I have removed the reset circuit when I tested .
Also checking the user manual of the MCU ,I found using the Ezport can erase the chip but had any effect.
Can anyone help me to solve this ?
Have a good day.