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STK22C48-S25TR 参数 Datasheet PDF下载

STK22C48-S25TR图片预览
型号: STK22C48-S25TR
PDF下载: 下载PDF文件 查看货源
内容描述: 2Kx8自动存储的nvSRAM [2Kx8 AutoStore nvSRAM]
分类和应用: 存储静态存储器
文件页数/大小: 15 页 / 229 K
品牌: SIMTEK [ SIMTEK CORPORATION ]
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STK22C48
2Kx8 AutoStore nvSRAM
FEATURES
• 25, 45 ns Read Access & R/W Cycle Times
• Unlimited Read/Write Endurance
• Automatic Non-Volatile
STORE
on Power Loss
• Non-Volatile
STORE
Under Hardware Control
• Automatic
RECALL
to SRAM on Power Up
• Unlimited RECALL Cycles
• 1 Million
STORE
Cycles
• 100-Year Non-volatile Data Retention
• Single 5V + 10% Operation
• Commercial, Industrial, and Military
Temperatures
• 28-Pin 300 mil SOIC or 330 mil SOIC (RoHS-
Compliant)
DESCRIPTION
The Simtek STK22C48 is a 16Kb fast static RAM with
a nonvolatile Quantum Trap storage element included
with each memory cell.
The SRAM provides the fast access & cycle times,
ease of use, and unlimited read & write endurance of
a normal SRAM.
Data transfers automatically to the non-volatile stor-
age cells when power loss is detected (the
STORE
operation). On power-up, data is automatically
restored to the SRAM (the
RECALL
operation). Both
STORE
and RECALL operations are also available
under software control.
The Simtek nvSRAM is the first monolithic non-vola-
tile memory to offer unlimited writes and reads. It is
the highest-performance, most reliable non-volatile
memory available.
BLOCK DIAGRAM
V
CCX
V
CAP
Quantum Trap
32 x 512
POWER
CONTROL
A
5
A
6
A
7
A
8
A
9
ROW DECODER
STORE
STATIC RAM
ARRAY
32 x 512
RECALL
STORE/
RECALL
CONTROL
HSB
DQ
0
DQ
1
DQ
2
DQ
3
DQ
4
DQ
5
DQ
6
DQ
7
INPUT BUFFERS
COLUMN I/O
COLUMN DEC
A
0
A
1
A
2
A
3
A
4
A
10
G
E
W
This product conforms to specifications per the
terms of Simtek standard warranty. The product
has completed Simtek internal qualification testing
and has reached production status.
1
Document Control #ML0004 Rev 0.3
February 2007