參數(shù)資料
型號(hào)： W78M32VP110BM
廠商： MICROSEMI CORP-PMG MICROELECTRONICS
元件分類(lèi)： PROM
英文描述： 8M X 32 FLASH 3.3V PROM, 110 ns, PBGA159
封裝： 13 X 22 MM, 1.27 MM PITCH, PLASTIC, BGA-159
文件頁(yè)數(shù)： 15/51頁(yè)
文件大?。?/td> 1637K
代理商： W78M32VP110BM
22
White Electronic Designs Corporation (602) 437-1520 www.whiteedc.com
White Electronic Designs
W78M32VP-XBX
January 2010
Rev. 12
White Electronic Designs Corp. reserves the right to change products or specications without notice.
TABLE 21 SECTOR PROTECTION SCHEMES: DYB, PPB AND PPB LOCK BIT COMBINATIONS
Uniques Device PPB Lock Bit
0 = locked
1 = unlock
Sector PPB
0 = locked
1 = unlock
Sector DYB
0 = locked
1 = unlock
Sector Protection Status
Any Sector
0
x
Protected through PPB
Any Sector
0
x
Protected through PPB
Any Sector
0
1
Unportected
Any Sector
0
1
0
Protected through PPB
Any Sector
1
0
x
Protected through PPB
Any Sector
1
0
x
Protected through PPB
Any Sector
1
0
Protected through PPB
Any Sector
1
Unportected
Table 21 contains all possible combinations of the DYB, PPB, and PPB Lock Bit relating to the status of the
sector. In summary, if the PPB Lock Bit is locked (set to “0”), no changes to the PPBs are allowed. The PPB
Lock Bit can only be unlocked (reset to “1”) through a hardware reset or power cycle. See also FIG: 8.1 for
an overview of the Advanced Sector Protection feature.
TABLE 22 LOCK REGISTER
Secured Silicon Sector Address
Range
Customer Lockable
ESN Factory Locked
ExpressFlash Factory Locked
000000h-000007h
Determined by customer
ESN
ESN or determinded by customer
000008h-000007Fh
Unavailable
Determinined by customer
TABLE 23 SECURED SILICON SECTOR ENTRY
(LLD Function = lld_SecSiSectorEntryCmd)
Cycle
Operation
Word Address
Data
Unlock Cycle 1
Write
Base + 555h
00AAh
Unlock Cycle 2
Base + 2AAh
0055h
Entry Cycle
Base + 555h
0088h
Note
Base = Base Address.
TABLE 24 SECURED SILICON SECTOR PROGRAM
(LLD Function = lld_ProgramCmd)
Cycle
Operation
Word Address
Data
Unlock Cycle 1
Write
Base + 555h
00AAh
Unlock Cycle 2
Base + 2AAh
0055h
Program Setup
Base + 555h
0088h
Program
Word Address
Data Word
Note
Base = Base Address.
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