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Checked 02SC 04SC 08SC 40SC 50SC, appear Altera made 3 different series on same package:
02SC is just compatible itself and not with other members.
04 08 are compatible thru 25, only 04 08 checked,
40 50 are exchangeable themselves only but not with other member of SC series.
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Yes, as you can see in the M10-Overview document, Figure 2: Migration Capability Across MAX 10 Devices. MAX10 E144 migration compatibility is in fact non mind-blowing.
Please notice that even devices marked as vertical migration compatible, e.g. Cyclone V E, F484, A2-A9 have several pins with changed function, you either need to let Quartus list the required pin connections for you or determine it yourself by comparing the pinout tables.
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