ESMT
F49L160UA/F49L160BA
Temporary Sector Unprotect Mode
This feature allows temporary unprotection of previously
protected sector to change data in-system. This mode is
un-protected and can be programmed or erased by
selecting the sector addresses. Once VID is removed from
activated by setting the
pin to VID(10V-10.5V).
the
pin, all the previously protected sectors are
RESET
During this mode, all formerly protected sectors are
RESET
protected again.
Start
RESET = VID (Note 1)
Perform Erase or
Program Operation
Operation Completed
RESET = VIH
Temporary Sector
Unprotect Completed
(Note 2)
Notes:
1. All protected sectors unprotected.
2. All previously protected sectors are protected once again.
Elite Semiconductor Memory Technology Inc.
Publication Date : Jan. 2008
Revision: 1.8 9/50
ESMT [ ELITE SEMICONDUCTOR MEMORY TECHNOLOGY INC. ]
