cd1020 related issues

[yiguangtang]

When I was using the chip cd1020, I quickly pressed the one-button start switch (50ms ~ 100ms press time), bcm could wake up, but the application layer did not receive the one-button start switch signal, resulting in failure to enter the logic of unlocking the steering wheel lock column. Would you like to ask the current chip cd1020, from the external switch signal input, to the mcu port, how many ms delay? The mcu uses s32k312, how should we fix this problem?

[JozefKozon]

Dear Yiguangtang,

the 50ms should be sufficient time to detect the pressed button. Could you please state on which pin you are pressing the button? Please share your schematic with voltage levels and part values. By the MCU port, do you mean the INT_B pin of the CD1020? 

With Best Regards,

Jozef