Max 10 unused VREF's

The Pin Connection Guidelines are actually referring to the automatically generated .pin file. It will give you information like:

Pin Name/Usage : Location : Dir. : I/O Standard : Voltage : I/O Bank : User Assignment

-------------------------------------------------------------------------------------------------------------

RESERVED_INPUT_WITH_WEAK_PULLUP : A2 : : : : 8A :

RESERVED_INPUT_WITH_WEAK_PULLUP : A3 : : : : 8A :

RESERVED_INPUT_WITH_WEAK_PULLUP : A4 : : : : 8A :

RESERVED_INPUT_WITH_WEAK_PULLUP : A5 : : : : 8A :

RESERVED_INPUT_WITH_WEAK_PULLUP : A6 : : : : 8A :

VCCIO8A : A7 : power : : 1.8V : 8A :

RESERVED_INPUT_WITH_WEAK_PULLUP : A8 : : : : 8A :

RESERVED_INPUT_WITH_WEAK_PULLUP : A9 : : : : 8A :

RESERVED_INPUT_WITH_WEAK_PULLUP : A10 : : : : 8A :

RESERVED_INPUT_WITH_WEAK_PULLUP : A11 : : : : 8A :

GND : A12 : gnd : : : :

Hi,

You can actually set the unused pins as "Input tri-stated with weak pull-up" from Quartus II setting

Goto "Device and Pin Options" -->Unused Pins --> Reserved all unused pins: As input tri-stated with weak pull-up"

Here is the link from Altera can be your reference:

https://www.altera.com/support/support-resources/knowledge-base/solutions/rd10192006_240.html

Hi CATastrophe,

When and where is this file generated? Thanks

Hi mattschwende,

The .pin file will be generated after completion of the Fitter compilation.