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STK14EX8-TF25I 参数 Datasheet PDF下载

STK14EX8-TF25I图片预览
型号: STK14EX8-TF25I
PDF下载: 下载PDF文件 查看货源
内容描述: 512Kx8自动存储的nvSRAM [512Kx8 Autostore nvSRAM]
分类和应用: 存储静态存储器
文件页数/大小: 18 页 / 203 K
品牌: SIMTEK [ SIMTEK CORPORATION ]
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STK14EC8  
Preliminary  
The AutoStore can be re-enabled by initiating an  
AutoStore Enable sequence. A sequence of READ  
operations is performed in a manner similar to the  
software RECALL initiation. To initiate the AutoStore  
Enable sequence, the following sequence of E con-  
trolled or G controlled READ operations must be  
performed:  
PREVENTING AUTOSTORE  
The AutoStore function can be disabled by initiating  
an AutoStore Disable sequence. A sequence of  
READ operations is performed in a manner similar  
to the software STORE initiation. To initiate the  
AutoStore Disable sequence, the following  
sequence of E controlled or G controlled READ  
operations must be performed:  
1 Read Address 0x4E38 Valid READ  
2 Read Address 0xB1C7 Valid READ  
3 Read Address 0x83E0 Valid READ  
4 Read Address 0x7C1F Valid READ  
5 Read Address 0x703F Valid READ  
6 Read Address 0x4B46 AutoStore Enable  
1 Read Address 0x4E38 Valid READ  
2 Read Address 0xB1C7 Valid READ  
3 Read Address 0x83E0 Valid READ  
4 Read Address 0x7C1F Valid READ  
5 Read Address 0x703F Valid READ  
6 Read Address 0x8B45 AutoStore Disable  
If the AutoStore function is disabled or re-enabled, a  
manual STORE operation (Hardware or Software)  
needs to be issued to save the AutoStore state  
through subsequent power down cycles. The part  
comes from the factory with AutoStore enabled, but  
best design practice is to set the enable or disable  
state during each power-up sequence and not  
depend on this factory default condition. Simtek rec-  
ommends users configure the part completely for  
the specific application.  
This is a product in development that has fixed tar-  
get specifications that are subject to change pend-  
ing characterization results.  
14  
Rev 1.0  
Document Control #ML0060  
April, 2007  
Simtek Confidential & Proprietary