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STK14CA8-WF25I Datasheet

  • STK14CA8-WF25I

  • 128K x 8 AutoStoreTM nvSRAM QuantumTrapTM CMOS Nonvolatile S...

  • 221.45KB

  • 15頁

  • ETC

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STK14CA8
128K x 8
AutoStore
nvSRAM
TM
QuantumTrap
CMOS
Nonvolatile Static RAM
FEATURES
鈥?/div>
25ns, 35ns and 45ns Access Times
鈥?/div>
鈥淗ands-off鈥?Automatic
STORE
on Power Down
with only a small capacitor
鈥?/div>
STORE
to
QuantumTrap鈩?/div>
Nonvolatile
Elements is Initiated by Software , device pin
or
AutoStore鈩?/div>
on Power Down
鈥?/div>
RECALL
to SRAM Initiated by Software or
Power Up
鈥?/div>
Unlimited
READ, WRITE
and
RECALL
Cycles
鈥?/div>
5mA Typical I
CC
at 200ns Cycle Time
鈥?/div>
1,000,000
STORE
Cycles to
QuantumTrap鈩?/div>
鈥?/div>
100-Year Data Retention to
QuantumTrap鈩?/div>
鈥?/div>
Single 3V +20%, -10% Operation
鈥?/div>
Commercial and Industrial Temperatures
鈥?/div>
SOIC, SSOP and DIP Packages
鈥?/div>
RoHS Compliance
TM
DESCRIPTION
The Simtek STK14CA8 is a fast static RAM with a
nonvolatile element in each memory cell. The
embedded
nonvolatile
elements
incorporate
TM
Simtek鈥檚
QuantumTrap
technology producing the
world鈥檚 most reliable nonvolatile memory. The
SRAM provides unlimited read and write cycles,
while independent, nonvolatile data resides in the
TM
highly reliable
QuantumTrap
cell. Data transfers
from the SRAM to the nonvolatile elements (the
STORE
operation) takes place automatically at
power down. On power up, data is restored to the
SRAM (the
RECALL
operation) from the nonvolatile
memory. Both the
STORE
and
RECALL
operations
are also available under software control.
BLOCK DIAGRAM
Quantum Trap
1024 X 1024
ROW DECODER
STORE
STATIC RAM
ARRAY
1024 X 1024
RECALL
V
CC
V
CAP
A
5
A
6
A
7
A
8
A
9
A
12
A
13
A
14
A
15
A
16
DQ
0
DQ
1
DQ
2
DQ
3
DQ
4
DQ
5
DQ
6
DQ
7
POWER
CONTROL
STORE/
RECALL
CONTROL
HSB
SOFTWARE
DETECT
INPUT BUFFERS
COLUMN I/O
COLUMN DEC
A
15
鈥?A
0
A
0
A
1
A
2
A
3
A
4
A
10
A
11
G
E
W
Figure 1. Block Diagram
December 2004
1
Document Control #ML0022 rev 1.0

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