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M29W640FT Datasheet(PDF) 65 Page - Numonyx B.V |
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M29W640FT Datasheet(HTML) 65 Page - Numonyx B.V |
65 / 71 page M29W640FT, M29W640FB Block protection 65/71 Table 30. Programmer technique bus operations, BYTE = VIH or VIL Operation E G W Address Inputs A0-A21 Data Inputs/Outputs DQ15A–1, DQ14-DQ0 Block (Group) Protect(1) VIL VID VIL Pulse A9 = VID, A12-A21 = Block address Others = X X Chip Unprotect VID VID VIL Pulse A9 = VID, A12 = VIH, A15 = VIH Others = X X Block (Group) Protection Verify VIL VIL VIH A0, A2, A3 = VIL, A1 = VIH, A6 = VIL, A9 = VID, A12-A21 = Block address Others = X Pass = XX01h Retry = XX00h Block (Group) Unprotection Verify VIL VIL VIH A0, A2, A3 = VIL, A1 = VIH, A6 = VIH, A9 = VID, A12-A21 = Block address Others = X Retry = XX01h Pass = XX00h 1. Block Protection Groups are shown in Appendix A, Tables 21 and 22. |
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