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参数资料
| 型号： | S29JL032J70TFI213 |
| 厂商： | SPANSION LLC |
| 元件分类： | PROM |
| 英文描述： | 2M X 16 FLASH 3V PROM, 70 ns, PDSO48 |
| 封装： | LEAD FREE, MO-142(D)DD, TSOP-48 |
| 文件页数： | 20/63页 |
| 文件大小： | 1618K |
| 代理商： | S29JL032J70TFI213 |
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August 24, 2011 S29JL032J_00_05
S29JL032J
27
Data
Sheet
8.13
Secured Silicon Region
The Secured Silicon Region feature provides a Flash memory region that enables permanent part
identification through an Electronic Serial Number (ESN). The Secured Silicon Region is 256 bytes in length,
and may shipped unprotected, allowing customers to utilize that sector in any manner they choose, or may
shipped locked at the factory (upon customer request). The Secured Silicon Indicator Bit data will be 82h if
factory locked, 42h if customer locked, or 02h if neither. Refer to Table 8.5 on page 22 for more details.
The system accesses the Secured Silicon through a command sequence (see Enter Secured Silicon Region/
Exit Secured Silicon Region Command Sequence on page 33). After the system has written the Enter
Secured Silicon Region command sequence, it may read the Secured Silicon Region by using the addresses
normally occupied by the boot sectors. This mode of operation continues until the system issues the Exit
Secured Silicon Region command sequence, or until power is removed from the device. On power-up, or
following a hardware reset, the device reverts to sending commands to the first 256 bytes of Sector 0. Note
that the ACC function and unlock bypass modes are not available when the Secured Silicon Region is
enabled.
8.13.1
Factory Locked: Secured Silicon Region Programmed and Protected At the
Factory
In a factory locked device, the Secured Silicon Region is protected when the device is shipped from the
factory. The Secured Silicon Region cannot be modified in any way. The device is preprogrammed with both
a random number and a secure ESN. The 8-word random number is at addresses 000000h-000007h in word
mode (or 000000h-00000Fh in byte mode). The secure ESN is programmed in the next 8 words at addresses
000008h-00000Fh (or 000010h-00001Fh in byte mode). The device is available preprogrammed with one of
the following:
A random, secure ESN only
Customer code through Spansion programming services
Both a random, secure ESN and customer code through Spansion programming services
Contact an your local sales office for details on using Spansion programming services.
8.13.2
Customer Lockable: Secured Silicon Region NOT Programmed or Protected
At the Factory
If the security feature is not required, the Secured Silicon Region can be treated as an additional Flash
memory space. The Secured Silicon Region can be read any number of times, but can be programmed and
locked only once. Note that the accelerated programming (ACC) and unlock bypass functions are not
available when programming the Secured Silicon Region.
Write the three-cycle Enter Secured Silicon Region command sequence, and then follow the insystem
sector protect algorithm as shown in Figure 8.2 on page 26, except that RESET# may be at either VIH or
VID. This allows in-system protection of the Secured Silicon Region without raising any device pin to a high
voltage. Note that this method is only applicable to the Secured Silicon Region.
To verify the protect/unprotect status of the Secured Silicon Region, follow the algorithm shown in
Once the Secured Silicon Region is locked and verified, the system must write the Exit Secured Silicon
Region command sequence to return to reading and writing the remainder of the array. The Secured Silicon
Region lock must be used with caution since, once locked, there is no procedure available for unlocking the
Secured Silicon Region area and none of the bits in the Secured Silicon Region memory space can be
modified in any way.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| S29JL032J70TFI220 | 功能描述:闪存 32MB 闪存 3.0V 70ns Parallel NOR 闪存 RoHS:否 制造商:ON Semiconductor 数据总线宽度:1 bit 存储类型:Flash 存储容量:2 MB 结构:256 K x 8 定时类型: 接口类型:SPI 访问时间: 电源电压-最大:3.6 V 电源电压-最小:2.3 V 最大工作电流:15 mA 工作温度:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体: 封装:Reel |
| S29JL032J70TFI310 | 功能描述:闪存 32MB 闪存 3.0V 70ns Parallel NOR 闪存 RoHS:否 制造商:ON Semiconductor 数据总线宽度:1 bit 存储类型:Flash 存储容量:2 MB 结构:256 K x 8 定时类型: 接口类型:SPI 访问时间: 电源电压-最大:3.6 V 电源电压-最小:2.3 V 最大工作电流:15 mA 工作温度:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体: 封装:Reel |
| S29JL032J70TFI313 | 制造商:Spansion 功能描述: |
| S29JL032J70TFI320 | 功能描述:闪存 32Mb 3V 70ns Parallel NOR 闪存 RoHS:否 制造商:ON Semiconductor 数据总线宽度:1 bit 存储类型:Flash 存储容量:2 MB 结构:256 K x 8 定时类型: 接口类型:SPI 访问时间: 电源电压-最大:3.6 V 电源电压-最小:2.3 V 最大工作电流:15 mA 工作温度:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体: 封装:Reel |
| S29JL032J70TFI323 | 功能描述:闪存 32M, 3V, 70ns Parallel NOR 闪存 RoHS:否 制造商:ON Semiconductor 数据总线宽度:1 bit 存储类型:Flash 存储容量:2 MB 结构:256 K x 8 定时类型: 接口类型:SPI 访问时间: 电源电压-最大:3.6 V 电源电压-最小:2.3 V 最大工作电流:15 mA 工作温度:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体: 封装:Reel |
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