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Hi,
I would like to confirm about the treatment of unused GPIO.
It is described in AN 80994 as follows.
AN80994
"Terminate the unused I/O lines to ground or supply through resistors of typical value of 10 k."
We understand that it implements resistors on the unused pins of analog Hi-Z.
Instead of implementing external resistors, Is it effective to pull up/pull donw unused pins in PSoC internal NVL setting?
Regards,
Masashi
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"The internal pull up / pull down of PSoC can not obtain the effect of EFT"
The understanding is OK.
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Hi Masashi,
The linker file you give is the EFT Design Consideration Guide line.
It is sure that the used GPIO is configured in analog high Z drive mode.
I think you don't use the pull up /pull down resistor unused pin instead on external resistor.
If you use the internal resistor, then it is not in the Analog High Z drive mode.
Thanks
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Thanks,
It was an idea to reduce the number of external resistors.
"The internal pull up / pull down of PSoC can not obtain the effect of EFT"
Is it OK with the above understanding?
Regards,
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"The internal pull up / pull down of PSoC can not obtain the effect of EFT"
The understanding is OK.