參數(shù)資料
型號： W78M64VP120SBI
廠商： WHITE ELECTRONIC DESIGNS CORP
元件分類： 存儲器
英文描述： SPECIALTY MEMORY CIRCUIT, PBGA156
封裝： 13 X 22 MM, PLASTIC, BGA-156
文件頁數(shù)： 29/48頁
文件大?。?/td> 1548K
代理商： W78M64VP120SBI
35
White Electronic Designs Corporation (602) 437-1520 www.whiteedc.com
White Electronic Designs
W78M64VP-XSBX
October 2008
Rev. 2
ADVANCED
White Electronic Designs Corp. reserves the right to change products or specications without notice.
FIG: 8 SECTOR ERASE OPERATION
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WP#/ACC = VIL
(Highest or Lowest
Sector Locked)
Password Method
(DQ2)
Persistent Method
(DQ1)
Lock Register
(One Time Programmable)
PPB Lock Bit
1,2,3
64-bit Password
(One Time Protect)
1 = PPBs Unlocked
0 = PPBs Locked
Memory Array
Sector 0
Sector 1
Sector 2
Sector N-2
Sector N-1
Sector N
3
PPB 0
PPB 1
PPB 2
PPB N-2
PPB N-1
PPB N
Persistent
Protection Bit
(PPB)
4,5
DYB 0
DYB 1
DYB 2
DYB N-2
DYB N-1
DYB N
Dynamic
Protection Bit
(DYB)
6,7,8
6. 0 = Sector Protected,
1 = Sector Unprotected.
7. Protect effective only if PPB Lock Bit is
unlocked and corresponding PPB is “1”
(unprotected).
8. Volatile Bits: defaults to user choice upon
power-up (see ordering options).
4. 0 = Sector Protected,
1 = Sector Unprotected.
5. PPBs programmed individually,
but cleared collectively
1. Bit is volatile, and defaults to “1” on reset.
2. Programming to “0” locks all PPBs to their
current state.
3. Once programmed to “0”, requires hardware
reset to unlock.
3. N = Highest Address Sector.
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