Description
Yes, all Stratix® devices support vertical migration within the same package (e.g., the designer can migrate between the EP1S10, EP1S20, and EP1S25 devices in the 672-pin BGA package).
Vertical migration is a device feature that maintains the locations of dedicated pins, configuration pins, and power pins for a given package across device densities.
For I/O pin migration across densities, the designer must cross reference the available I/O pins using the device pin-outs for all planned densities of a given package type to identify which I/O pins are migrate-able. The Quartus® II software automatically cross references and places all pins except differential I/O pins for migration when given a device migration list. Use the pin-out tables for each device to verify differential I/O pin placement .