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S29AL016J70TFI020 Datasheet(PDF) 21 Page - SPANSION |
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S29AL016J70TFI020 Datasheet(HTML) 21 Page - SPANSION |
21 / 58 page April 12, 2012 S29AL016J_00_12 S29AL016J 21 Data She e t 7.11 Temporary Sector Group Unprotect This feature allows temporary unprotection of previously protected sector groups to change data in-system. The Sector Group Unprotect mode is activated by setting the RESET# pin to VID. During this mode, formerly protected sector groups can be programmed or erased by selecting the sector group addresses. Once VID is removed from the RESET# pin, all the previously protected sector groups are protected again. Figure 7.1 shows the algorithm, and Figure 17.11 on page 50 shows the timing diagrams, for this feature. Table 7.7 S29AL016J Top Boot Device Sector/Sector Group Protection Sector / Sector Block A19 A18 A17 A16 A15 A14 A13 A12 Sector / Sector Block Size SA0-SA3 0 0 0 X X X X X 256 (4x64) Kbytes SA4-SA7 0 0 1 X X X X X 256 (4x64) Kbytes SA8-SA11 0 1 0 X X X X X 256 (4x64) Kbytes SA12-SA15 0 1 1 X X X X X 256 (4x64) Kbytes SA16-SA19 1 0 0 X X X X X 256 (4x64) Kbytes SA20-SA23 1 0 1 X X X X X 256 (4x64) Kbytes SA24-SA27 1 1 0 X X X X X 256 (4x64) Kbytes SA28-SA29 1 1 1 0 X X X X 128 (2x64) Kbytes SA30 1 1110 X X X 64 Kbytes SA31 1 11110 X X 32 Kbytes SA32 1 1111100 8 Kbytes SA33 1 1111101 8 Kbytes SA34 1 111111 X 16 Kbytes Table 7.8 S29AL016J Bottom Boot Device Sector/Sector Group Protection Sector / Sector Block A19 A18 A17 A16 A15 A14 A13 A12 Sector / Sector Block Size SA0 0 00000 0 X 16 Kbytes SA1 0 00000 10 8 Kbytes SA2 0 00000 11 8 Kbytes SA3 0 00001 X X 32 Kbytes SA4 0 0001 X X X 64 (1x64) Kbytes SA5-SA6 0 0 0 1 XXXX 128 (2x64) Kbytes SA7-SA10 0 0 1 XXXXX 256 (4x64) Kbytes SA11-SA14 0 1 0 XXXXX 256 (4x64) Kbytes SA15-SA18 0 1 1 XXXXX 256 (4x64) Kbytes SA19-SA22 1 0 0 XXXXX 256 (4x64) Kbytes SA23-SA26 1 0 1 XXXXX 256 (4x64) Kbytes SA27-SA30 1 1 0 XXXXX 256 (4x64) Kbytes SA31-SA34 1 1 1 XXXXX 256 (4x64) Kbytes |
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