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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： | 19/65页 |
| 文件大小： | 650K |
| 代理商： | W29GL032CB7A |
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W29GL032C
20
7.4
Security Sector Flash Memory Region
An extra memory space length of 128 words is used as the Security Sector Region which can be
factory locked or customer lockable. To enquire about the lock status of the device, the customer can
issue a Security Sector Protect Verify or Security Sector Factory Protect Verify using Automatic Select
Address 03h and DQ7.
The security sector region is unprotected when shipped from factory and the security silicon indicator
bit (DQ7) is set to "0" for a customer lockable device. The security sector region is protected when
shipped from factory and the security silicon sector indicator bit is set to "1" for a factory-locked device.
7.4.1
Factory Locked: Security Sector Programmed and Protected at factory
In a factory locked device, the Security Sector is permanently locked prior to factory shipment The
ESN occupies addresses 00000h to 00007h in word mode for all configurations since the device has a
16-byte (8-word) ESN(Electronic Serial Number) in the security region.
Security Silicon Sector
Address Range
Standard Factory
Locked
Express Flash Factory
Locked
Customer
Lockable
000000h-000007h
ESN
ESN or Determined by
Customer
Determined by
Customer
000008h-00007Fh
Inaccessible
Determined by Customer
Table 7-12
Factory Locked: Security Sector
7.4.2
Customer Lockable: Security Sector Not Programmed or Protected
Important Notice; Once the security silicon sector is protected (Lock Register OTP DQ0 = “0”, Security
Sector indicator DQ7 bit=”0”), there is no way to unprotect the security silicon sector and the contents
of the memory region can no longer be programmed or erased.
Once the security silicon is locked and verified, an Exit Security Sector Region instruction must be
executed to get back to the Read Array mode. A power cycle, or a hardware reset will also return the
device to read array mode.
This region can act as extra memory space when this security feature is not utilized.
相关PDF资料 |
PDF描述 |
|---|---|
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相关代理商/技术参数 |
参数描述 |
|---|---|
| W29GL032CB7ATR | 制造商:Winbond Electronics Corp 功能描述:PF, 32M-BIT, 4KB UNIFORM SECTO |
| W29GL032CB7B | 制造商:Winbond Electronics Corp 功能描述:IC FLASH 32MBIT 70NS 64LFBGA |
| W29GL032CB7S | 功能描述:IC FLASH 32MBIT 70NS 48TSOP RoHS:是 类别:集成电路 (IC) >> 存储器 系列:- 标准包装:2,500 系列:- 格式 - 存储器:EEPROMs - 串行 存储器类型:EEPROM 存储容量:1K (128 x 8) 速度:100kHz 接口:UNI/O?（单线） 电源电压:1.8 V ~ 5.5 V 工作温度:-40°C ~ 85°C 封装/外壳:8-TSSOP，8-MSOP（0.118"，3.00mm 宽） 供应商设备封装:8-MSOP 包装:带卷 (TR) |
| W29GL032CH7B | 制造商:Winbond Electronics Corp 功能描述:IC FLASH 32MBIT 70NS 64LFBGA |
| W29GL032CH7T | 制造商:Winbond Electronics Corp 功能描述:IC FLASH 32MBIT 70NS 56TSOP |
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