 |
์ ์๋ถํ ๋ฐ์ดํฐ์ํธ ๊ฒ์์์ง |
|
|
์ ์๋ถํ ๋ฐ์ดํฐ์ํธ ๊ฒ์์์ง |
|
AM41DL3208G ๋ฐ์ดํฐ์ํธ(HTML) 23 Page - SPANSION |
|
||||||||||||||||||||||||||||||
AM41DL3208G ๋ฐ์ดํฐ์ํธ(HTML) 23 Page - SPANSION |
|
|
23 / 65 page 
22 Am41DL3208G February 13, 2002 P R E L IMINARY Note that the WP#/ACC pin must not be left floating or unconnected; inconsistent behavior of the device may result. Temporary Sector/Sector Block Unprotect (Note: For the following discussion, the term โsectorโ applies to both sectors and sector blocks. A sector block consists of two or more adjacent sectors that are protected or unprotected at the same time (see Table 10). This feature allows temporary unprotection of previ- ously protected sectors to change data in-system. The Sector Unprotect mode is activated by setting the RE- SET# pin to V ID (11.5 V โ 12.5 V). During this mode, formerly protected sectors can be programmed or erased by selecting the sector addresses. Once V ID is removed from the RESET# pin, all the previously pro- tected sectors are protected again. Figure 1 shows the algorithm, and Figure 25 shows the timing diagrams, for this feature. Figure 1. Temporary Sector Unprotect Operation START Perform Erase or Program Operations RESET# = VIH Temporary Sector Unprotect Completed (Note 2) RESET# = VID (Note 1) Notes: 1. All protected sectors unprotected (If WP#/ACC = V IL, outermost boot sectors will remain protected). 2. All previously protected sectors are protected once again. |
Korean โผ 
English
Chinese
German
Japanese
Russian
Spanish
French
Italian
Portuguese
Polish
Vietnamese
