STK14CA8
128Kx8 AutoStore
™
nvSRAM
Cypress Semiconductor Corporation
•
198 Champion Court
•
San Jose
,
CA 95134-1709
•
408-943-2600
Document Number: 001-51592 Rev. **
Revised March 04, 2009
Features
■
25, 35, 45 ns Read Access and Read/Write Cycle Time
■
Unlimited Read/Write Endurance
■
Automatic Nonvolatile STORE on Power Loss
■
Nonvolatile STORE Under Hardware or Software Control
■
Automatic RECALL to SRAM on Power Up
■
Unlimited RECALL Cycles
■
200K STORE Cycles
■
20-Year Nonvolatile Data Retention
■
Single 3.0V + 20%, -10% Operation
■
Commercial and Industrial Temperatures
■
Small Footprint SOIC and SSOP Packages (RoHS Compliant)
Description
The Cypress STK14CA8 is a 1 Mb fast static RAM with a nonvol-
atile QuantumTrap™ storage element included with each
memory cell. This SRAM provides fast access and cycle times,
ease of use, and unlimited read and write endurance of a normal
SRAM.
Data transfers automatically to the nonvolatile storage 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 Cypress nvSRAM is the first monolithic nonvolatile memory
to offer unlimited writes and reads. It is the highest performing
and most reliable nonvolatile memory available.
R
O
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IN
PUT BU
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F
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S
COLUMN DEC
G
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COLUMN I/O
POWER
CONTROL
HSB
STORE/
RECALL
CONTROL
SOFTWARE
DETECT
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15
– A
0
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5
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Quantum Trap
1024 X 1024
STATIC RAM
ARRAY
1024 X 1024
STORE
RECALL
DQ
0
DQ
1
DQ
2
DQ
3
DQ
4
DQ
5
DQ
6
DQ
7
A
0
A
1
A
2
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3
A
4
A
10
A
11
V
CC
V
CAP
Logic Block Diagram
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