Hello, I am developing a new PCB with NXP MKE04Z8VTG4, I have the problem that when we make a discharge of -8kV with an ESD generator in a plane the microcontroller is RESET.
How I can avoit this?
I have the following schematic for the microcontroller.
Lots of filtering on the reset line.
If you disconnect all that and use a push button and a pull up on Reset for this test,
does the micro still reset? Sometimes we chase the wrong problem. :-(
https://www.analog.com/media/en/technical-documentation/application-notes/AN-793.pdf
Yes, that is for a part you are not using. Goes into the methodology of ESD testing.
Just for your reference, KE04 electrostatic discharge voltage, human body model is +/-6kV, charged-device model is +/-500V.
Hi,
If the reset signal is send by STM809, it's hard to filter. Because reset pin will be pull down for a long time, not just a glitch.
You can add a capacitor after 4k7 resistor to filter glitch.
The RESET_b pin also has a configurable digital filter to reject potential noise on this input after power-up. The configuration bits are located in the RCM_RPFC register.
Regards
Jing