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M29W128GH70N3E Datasheet(PDF) 51 Page - Numonyx B.V |
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M29W128GH70N3E Datasheet(HTML) 51 Page - Numonyx B.V |
51 / 94 page M29W128GH, M29W128GL Registers 51/94 Table 18. Lock register bits(1) 1. DQ0, DQ1 and DQ2 lock register bits are set to ‘1’ when shipped from the factory. DQ15-3 DQ2 DQ1 DQ0 Don’t care Password protection mode lock bit Non-volatile protection mode lock bit Extended block protection bit Table 19. Block protection status NVPB lock bit(1) 1. If the NVPB lock bit is set to ‘0’, all NVPBs are locked. If the NVPB lock bit is set to ‘1’, all NVPBs are unlocked. Block NVPB(2) 2. If the block NVPB is set to ‘0’, the block is protected, if set to ‘1’, it is unprotected. Block VPB(3) 3. If the block VPB is set to ‘0’, the block is protected, if set to ‘1’, it is unprotected. Block protection status Block protection status 0 0 x 01h Block protected (non-volatile protection through NVPB) 0 1 1 00h Block unprotected 01 0 00h Block protected (volatile protection through VPB) 10 x 01h Block protected (non-volatile protection through NVPB) 11 0 01h Block protected (volatile protection through VPB) 1 1 1 00h Block unprotected |
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