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F49L320BA-90TIG Datasheet(PDF) 11 Page - Elite Semiconductor Memory Technology Inc. |
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F49L320BA-90TIG Datasheet(HTML) 11 Page - Elite Semiconductor Memory Technology Inc. |
11 / 55 page ESMT F49L320UA/F49L320BA Operation Temperature Condition -40 °C~85°C Elite Semiconductor Memory Technology Inc. Publication Date : Sep. 2008 Revision: 1.1 11/55 Temporary Sector Unprotect Mode This feature allows temporary unprotection of previously protected sector to change data in-system. This mode is activated by setting the ESET R pin to VID(10V-10.5V). During this mode, all formerly protected sectors are un-protected and can be programmed or erased by selecting the sector addresses. Once VID is removed from the ESET R pin, all the previously protected sectors are protected again. Notes: 1. All protected sectors unprotected. 2. All previously protected sectors are protected once again. Start RESET = VID (Note 1) Perform Erase or Program Operation RESET = VIH Temporary Sector Unprotect Completed (Note 2) Operation Completed |
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