Introduction - If you have any usage issues, please Google them yourself
FLASH programming principles are the only one written as 0, can not be written as one. Before FLASH programming must be the corresponding block erase, erased all of the bits are written for a process, all within a block of bytes into 0Xff. The most basic operations on FALSH read, write and erase operations. The following details are reference sst39vf1601 datasheet