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Hi support team.
I received a inquiry from my customer below.
1) The inquiry is what is the state of PENIRQ immediately after startup?
Also, they would like to get a PENIRQ signal without any settings after startup, but the reality doesn't seem to be the case.
2) It seems that the internal initial settings are not described in the data sheet, is there a way to know?
Or are all the settings undefined immediately after startup?
Best regards,
Higa
Hello Higa,
I will take a deeper look into your question and respond within the day.
Best Regards,
Carson
LPA Applications Engineer
Hello Higa,
PINIRQ pin is left floating until external pull-up resistor is put into place
Diode is blocking voltage to be set from internal turn-on.
Hi Allen-san
Thank you for your confirming.
Would you please answer the second question?
2) It seems that the internal initial settings are not described in the data sheet, is there a way to know?
Or are all the settings undefined immediately after startup?
Regards,
Higa
There are no default settings like you would see in a register/i2c controlled device, digital pins are required to be set as they are only weekly biased to be pulled-up when left floating.