New Contributori have done a blank check and even erased the device again, but nothing changes, still the device has many high voltage I/O's.
my bank voltage is 3.3V. please advice why this happens and why the I/O's aren't Tri-stated?
Frequent Contributor
New Contributorconfiguration setting in the quartus is irrelevant because I am talking about a blank max10, a max10 that comes from the factory.
I assume it is the same as an erased one.
why aren't the output of the device at tri-state on a blank component?
thank you,
Itai
ContributorBlank, unprogrammed parts all have tri-state I/O with weak pull-ups.
Cheers,
Alex
Frequent ContributorHello Alex ,
Can you kindly point out in datasheet where it is mentioned ?
Thank you ,
Regards,
Sree
Contributorhttps://www.intel.com/content/www/us/en/programmable/documentation/mcn1397700832153.html#mcn1397811237452
Table 17:
"Value of I/O pin (dedicated and dual-purpose) pull-up resistor before and during configuration, as well as user mode if the programmable pull-up resistor option is enabled"
Cheers,
Alex
New ContributorThank you for the answer and pointing on the datasheet,
Though, I see that it is possible to change User I/Os weak pull up during configuration: https://www.intel.com/content/www/us/en/programmable/documentation/sss1393988509894.html#sss1426059991604 through changing the ICB settings.
Is it possible to configure the weak pull up also when the max10 is not configured? (for example , configuring the icb settings and then erasing the device)
Thanks, Itai.
ContributorThis only affects the device during configuration. As soon as you erase the part these settings will have no effect.
Cheers,
Alex
