I am using S29GL032N.
Most the operations (block erasing, write, chip erasing) require a command sequence by writing some specific values to some specific addresses. For example, to ease a block starting at 0x10000, we need :
write 0x555 with 0xAA
write 0x2AA with 0x55
write 0x555 with 0x80
write 0x555 with 0xAA
write 0x2AA with 0x55
write 0x10000 with 0x30
This works.
But today I accidently find the operation still work if I change some MSBs of the address to 1 instead of 0. For example, the below sequence:
write 0xFFD55 with 0xAA
write 0xFFAAA with 0x55
write 0xFFD55 with 0x80
write 0xFFD55 with 0xAA
write 0xFFAAA with 0x55
write 0x10000 with 0x30
It looks like that only bit 0~10 matter. Is this true？ Is this a common feature for NOR flash?
