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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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S29GL032M10BCIR20 데이터시트(PDF) 94 Page - SPANSION |
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S29GL032M10BCIR20 데이터시트(HTML) 94 Page - SPANSION |
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94 / 160 page  94 S29GLxxxM MirrorBitTM Flash Family S29GLxxxM_00A5 April 30, 2004 Pr e l i m i n a r y 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 set- ting 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 1 shows the algorithm, and Figure 23 shows the timing diagrams, for this feature. Notes: 1. All protected sector groups unprotected (If WP# = VIL, the first or last sector will remain protected). 2. All previously protected sector groups are protected once again. Figure 1. Temporary Sector Group Unprotect Operation START Perform Erase or Program Operations RESET# = VIH Temporary Sector Group Unprotect Completed (Note 2) RESET# = VID (Note 1) |
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