参数资料
型号: W29GL032CT7A
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: 15/65页
文件大小: 650K
代理商: W29GL032CT7A
W29GL032C
16
7.3.1
Lock Register
User can choose Secured Silicon Sector Protection Bit for security sector protection method via setting
the Lock Register bit, DQ0. Lock Register is a 16-bit one time programmable register. Once
programmed DQ0, will be locked in that mode permanently.
Once the Instruction Set Entry instruction sequence for the Lock Register Bits is issued, all sectors
read and write functions are disabled until Lock Register Exit sequence has been executed.
The memory sectors and extended memory sector protection is configured using the Lock Register.
DQ[15:1]
DQ0
Don’t Care
Secured Silicon Sector Protection Bit
Table 7-10
Lock Register Bits
Figure 7-2
Lock Register Program Algorithm
Start
Write Data AAh, Address 555h
Write Data 55h, Address2AAh
Write Data 40h, Address 555h
Write Data A0h, Address don’t care
Write Program Data, Address don’t care
Data # Polling Algorithm
Fail
Reset instruction
Done
DQ5=1
NO
YES
Pass
Exit lock Register instruction
YES
Lock Register instruction set entry
Lock Register data program
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