MPC5748G sleep wake up problem.

[my_souls]

Hi,When MPC5748G currently uses WAKE-UP, it continuously enters stop mode and wakes up more than ten times. Once again, enters stop mode, and it is found that the rising or falling edge of the external hardware pin cannot wake up for the first time, but can wake up for the second time. What might be the reason for this?

[lukaszadrapa]

Hi Kun,

it sounds like some kind of application problem. What is length of the pulse? Is there any capacitance on the wake up pin? Isn't the pulse filtered out?

Regards,

Lukas

[my_souls]

Hi Lukas

      At present, the falling edge changes from high level to low level, and there is no capacitance on the wake-up pin.

      The wake-up filtering has been cancelled in the program, but the problem still exists, what operation in the program will cause this situation?

   thanks

[lukaszadrapa]

Hi Kun,

do you have any simple project to reproduce the behavior? It's not clear to me what happened.

Regards,

Lukas