参数资料
型号: W29GL032CB7A
厂商: WINBOND ELECTRONICS CORP
元件分类: PROM
英文描述: 2M X 16 FLASH 3V PROM, 80 ns, PBGA48
封装: GREEN, VFBGA-48
文件页数: 14/65页
文件大小: 650K
代理商: W29GL032CB7A
W29GL032C
Publication Release Date: January 19, 2011
15
Preliminary - Revision B
7.3
Enhanced Sector Protect/Un-protect
This device is set from the factory in the Individual Protection mode of the Enhanced Sector Protect
scheme. The user can disable or enable the programming or erasing operation to any individual sector
or whole chip. The figure below helps describe an overview of these methods.
The device defaults to the Individual mode and all sectors are unprotected when shipped from the
factory.
The following flow chart shows the detailed algorithm of Enhanced Sector Protect:
Figure 7-1
Enhanced Sector Protect/Un-protect IPB Program Algorithm
Start
Individual Protection
Mode
(Default)
Set IPB
Lock Bit
IPB lock Bit locked
All IPB not changeable
Dynamic Write Protect bit
(DPB)
Sector Array
Individual Protect bit
(IPB)
DPB=0 Sector Protect
DPB=1 Sector Unprotect
IPB Lock bit Unlocked
IPB is Changeable
DPB 0
DPB 1
DPB 2
DPB + n
.
SA 0
SA 1
SA 2
SA + n
.
IPB 0
IPB 1
IPB 2
IPB + n
.
IPB=0 Sector Protect
IPB=1 Sector Unprotect
IPB=0
IPB=1
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