Arria, Arria II have an nIO_PULLUP pin, but Arria V doesn't seem to have it. What is the state of the IO pins from power up to end of configuration on Arria V?
Arria, Arria II have an nIO_PULLUP pin, but Arria V doesn't seem to have it. What is the state of the I/O pins from power up to end of configuration in Arria V?
The nIO_PULLUP pin is a pin that sets the state of user I/O pins (including Dual-Purpose pins) after power-up, before configuration starts, and during configuration, and it exists in Arria/Arria II. .
・ nIO_PULLUP = High (directly connected to VCC)
⇒The internal Weak Pull-Up resistor is disabled, and the device enters a Tri-State state without Weak Pull-Up.
・ nIO_PULLUP = Low (directly connected to GND)
⇒The internal Weak Pull-Up resistor is enabled, and the state becomes Tri-State with Weak Pull-Up.
* For details, search for "nIO_PULLUP" in the Device Handbook of each device and refer to it.
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Arria V does not have an nIO_PULLUP pin and does not have a Weak Pull-Up On/Off control function.
Arria V user I/O pins (including Dual-Purpose pins) are in Tri-Satte state with weak pull-up resistors enabled after power-on, before configuration starts, and during configuration. increase.
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