Short time is relative.
Even Zaragoza, in the far north, was Moslem for 400 years.
Nearly all of Spain was Moslem controlled for at least 200 years. Only small areas, and those remote and poor, were never conquered.
Asturias was never conquered, and other parts of Northern Spain were conquered briefly, reconquered many years later when a different band of Arabs swept through, and then in many cases were simply vassals - that is, they paid trribute (in money, goods or young men and women) but were ruled by their own kings and did not follow Islamic law or customs. Pigs abounded...