Like I said in another post:
You could write aproximately 32,000 times your nand back on to the switch before having the chip failing on you, that's 87 years doing it daily or 17 years writting it 5 times a day.
You could write aproximately 32,000 times your nand back on to the switch before having the chip failing on you, that's 87 years doing it daily or 17 years writting it 5 times a day.