M29F800DB70M6F datasheet check from
http://www.chinaicmart.com/series-M29/M29F800DB70M6F.html
SUMMARY DESCRIPTION
The M29F800D is a 8 Mbit (1Mb x8 or 512Kb x16) non-volatile memory that can be read, erased and
reprogrammed. These operations can be performed using a single low voltage (5V) supply. On power-up the memory defaults to its Read mode where it can be read in the same way as a ROM or
EPROM.
The memory is divided into blocks that can be erased independently so it is possible to preserve
valid data while old data is erased. Each block can be protected independently to prevent accidental
Program or Erase commands from modifying the memory. Program and Erase commands are written
to the Command Interface of the memory. An on-chip Program/Erase Controller simplifies the process of programming or erasing the memory by taking care of all of the special operations that are required to update the memory contents.