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S29GL032A Datasheet(PDF) 41 Page - SPANSION |
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S29GL032A Datasheet(HTML) 41 Page - SPANSION |
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41 / 95 page  September 10, 2007 S29GL-A_00_A11 S29GL-A 41 Data She e t 7.9 Sector Group Protection and Unprotection The hardware sector group protection feature disables both program and erase operations in any sector group (see Table 7.11 on page 38 to Table 7.22 on page 45). The hardware sector group unprotection feature re-enables both program and erase operations in previously protected sector groups. Sector group protection/unprotection can be implemented via two methods. Sector protection/unprotection requires VID on the RESET# pin only, and can be implemented either in- system or via programming equipment. Figure 7.2 on page 46 shows the algorithms and Figure 16.13 on page 86 shows the timing diagram. This method uses standard microprocessor bus cycle timing. For sector group unprotect, all unprotected sector groups must first be protected prior to the first sector group unprotect write cycle. The device is shipped with all sector groups unprotected. Spansion offers the option of programming and protecting sector groups at its factory prior to shipping the device through Spansion Programming Service. Contact a Spansion representative for details. It is possible to determine whether a sector group is protected or unprotected. See Autoselect Mode on page 40 for details. Table 7.13 S29GL016A (Model R1, 01) Sector Group Protection/Unprotection Addresses Sector A19–A12 Sector/Sector Block Size (Kbytes) Sector A19–A12 Sector/Sector Block Size (Kbytes) SA0-SA3 000XXXXXh 256 (4x64) SA31 11111000h 8 SA4-SA7 001XXXXXh 256 (4x64) SA32 11111001h 8 SA8-SA11 010XXXXXh 256 (4x64) SA33 11111010h 8 SA12-SA15 011XXXXXh 256 (4x64) SA34 11111011h 8 SA16-SA19 100XXXXXh 256 (4x64) SA35 11111100h 8 SA20-SA23 101XXXXXh 256 (4x64) SA36 11111101h 8 SA24-SA27 110XXXXXh 256 (4x64) SA37 11111110h 8 SA28-SA30 11100XXXh 192 (3x64) SA38 11111111h 8 11101XXXh 11110XXXh Table 7.14 S29GL016A (Model R2, 02) Sector Group Protection/Unprotection Addresses Sector A19–A12 Sector/Sector Block Size (Kbytes) Sector A19–A12 Sector/Sector Block Size (Kbytes) SA0 00000000h 8 SA8–SA10 00001XXXh 192 (3x64) SA1 00000001h 8 00010XXXh SA2 00000010h 8 00011XXXh SA3 00000011h 8 SA11–SA14 001XXXXXh 256 (4x64) SA4 00000100h 8 SA15–SA18 010XXXXXh 256 (4x64) SA5 00000101h 8 SA19–SA22 011XXXXXh 256 (4x64) SA6 00000110h 8 SA23–SA26 100XXXXXh 256 (4x64) SA7 00000111h 8 SA27-SA30 101XXXXXh 256 (4x64) SA31-SA34 110XXXXXh 256 (4x64) SA35-SA38 111XXXXXh 256 (4x64) |
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