参数资料
型号: W29GL128CH9B
厂商: Winbond Electronics
文件页数: 22/67页
文件大小: 0K
描述: IC FLASH 128MBIT 90NS 64LFBGA
标准包装: 171
格式 - 存储器: 闪存
存储器类型: FLASH
存储容量: 128M(16M x 8,8M x 16)
速度: 90ns
接口: 并联
电源电压: 2.7 V ~ 3.6 V
工作温度: -40°C ~ 85°C
封装/外壳: 64-LBGA
供应商设备封装: 64-LFBGA(11x13)
包装: 管件
W29GL128C
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]
Don’t Care
DQ0
Secured Silicon Sector Protection Bit
Table 7-10
Lock Register Bits
Start
Write Data AAh, Address 555h
Write Data 55h, Address2AAh
Lock Register instruction set entry
Write Data 40h, Address 555h
Write Data A0h, Address don’t care
Lock Register data program
Write Program Data, Address don’t care
Data # Polling Algorithm
YES
Done
NO
NO
DQ5=1
YES
Fail
Reset instruction
Pass
Exit lock Register instruction
Figure 7-2
Lock Register Program Algorithm
16
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