M29W640GH Datasheet, PDF (33/90 Pages) Numonyx B.V – 64 Mbit (8Mb x8 or 4Mb x16, Page) 3V supply Flash memory

M29W640GH, M29W640GL, M29W640GT, M29W640GB
Command Interface
4.3.3
Block Protect and Chip Unprotect commands
Groups of blocks can be protected against accidental Program or Erase. The Protection
Groups are shown in Appendix A: Block addresses, Table 28: Top boot block addresses,
M29W640GT and Table 29: Bottom boot block addresses, M29W640GB. The whole chip
can be unprotected to allow the data inside the blocks to be changed.
Block Protect and Chip Unprotect operations are described in : Revision history.
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