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AS8NVLC512K32QC-20XT 参数 Datasheet PDF下载

AS8NVLC512K32QC-20XT图片预览
型号: AS8NVLC512K32QC-20XT
PDF下载: 下载PDF文件 查看货源
内容描述: 512K ×32模块的nvSRAM 3.3V高速SRAM与非易失性存储 [512K x 32 Module nvSRAM 3.3V High Speed SRAM with Non-Volatile Storage]
分类和应用: 存储静态存储器
文件页数/大小: 17 页 / 362 K
品牌: AUSTIN [ AUSTIN SEMICONDUCTOR ]
 浏览型号AS8NVLC512K32QC-20XT的Datasheet PDF文件第1页浏览型号AS8NVLC512K32QC-20XT的Datasheet PDF文件第2页浏览型号AS8NVLC512K32QC-20XT的Datasheet PDF文件第3页浏览型号AS8NVLC512K32QC-20XT的Datasheet PDF文件第4页浏览型号AS8NVLC512K32QC-20XT的Datasheet PDF文件第6页浏览型号AS8NVLC512K32QC-20XT的Datasheet PDF文件第7页浏览型号AS8NVLC512K32QC-20XT的Datasheet PDF文件第8页浏览型号AS8NVLC512K32QC-20XT的Datasheet PDF文件第9页  
SEMICONDUCTOR, INC.  
ADVANCE INFORMATION  
nvSRAM  
AS8nvLC512K32  
Austin Semiconductor, Inc.  
Mode Selection (continued)  
OE\13  
A15ͲA07  
CE\1Ͳ4  
WE\1Ͳ4  
I/O0Ͳ31  
Mode  
Power  
Active8  
L
H
L
0x4E38  
0xB1C7  
0x83E0  
0x7C1F  
0x703F  
0x4B46  
ReadSRAM  
ReadSRAM  
ReadSRAM  
ReadSRAM  
ReadSRAM  
OutputData  
OutputData  
OutputData  
OutputData  
OutputData  
OutputData  
AutoStoreEnable  
ActiveICC28  
L
H
L
0x4E38  
ReadSRAM  
OutputData  
0xB1C7  
0x83E0  
0x7C1F  
0x703F  
0x8FC0  
ReadSRAM  
ReadSRAM  
ReadSRAM  
OutputData  
OutputData  
OutputData  
OutputData  
OutputHighZ  
ReadSRAM  
NonvolatileStore  
L
H
L
0x4E38  
0xB1C7  
0x83E0  
0x7C1F  
0x703F  
0x4C63  
ReadSRAM  
ReadSRAM  
ReadSRAM  
ReadSRAM  
ReadSRAM  
Nonvolatileꢀꢀ  
Recall  
OutputData  
OutputData  
OutputData  
OutputData  
OutputData  
OutputHighZ  
Active8  
Data Protection  
Preventing AutoStore  
The AS8nvLC512K32 protects data from corruption during low  
voltage conditions by inhibiting all externally initiated  
STORE and write operations. The low voltage condition is detected  
when VCC < VSWITCH. If the AS8nvLC512K32 is in a write mode  
(both CE and WE are LOW) at power up, after a RECALL or STORE,  
the write is inhibited until the SRAM is enabled after tLZHSB (HSB  
to output active). This protects against inadvertent writes during  
power up or brown out conditions.  
TheAutoStore function is disabled by initiating anAutoStore 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 CE 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 0x8B45 AutoStore Disable  
The AutoStore is 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 CE 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  
If the AutoStore function is disabled or re-enabled, a manual STORE  
operation (hardware or software) must be issued to save theAutoStore  
state through subsequent power down cycles. The part comes from  
the factory with AutoStore enabled.  
Austin Semiconductor, Inc. reserves the right to change products or specifications without notice.  
AS8nvLC512K32  
Rev. 0.0 08/09  
5