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STK14D88 Datasheet(PDF) 1 Page - List of Unclassifed Manufacturers

Part No. STK14D88
Description  32K x 8 AutoStore nvSRAM CMOS Nonvolatile Static RAM
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STK14D88 Datasheet(HTML) 1 Page - List of Unclassifed Manufacturers

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April 2005
Document Control #ML0033 rev 1.2
1
STK14D88
32K x 8 AutoStore
TM nvSRAM
QuantumTrap
TM CMOS
Nonvolatile Static RAM
FEATURES
• 25ns, 35ns and 45ns Access Times
• “Hands-off” Automatic STORE on Power Down
with only a small capacitor
• STORE to QuantumTrap™ Nonvolatile
Elements is Initiated by Software , device pin
or AutoStore™ on Power Down
• RECALL to SRAM Initiated by Software or
Power Restore
• Unlimited READ, WRITE and RECALL Cycles
• 5mA Typical I
CC at 200ns Cycle Time
• 1,000,000 STORE Cycles to QuantumTrap™
• 100-Year Data Retention to QuantumTrap™
• Single 3V +20%, -10% Operation
• Commercial and Industrial Temperatures
• SSOP and SOIC Packages
• RoHS Compliance
DESCRIPTION
The Simtek STK14D88 is a fast static RAM with a
nonvolatile element in each memory cell. The
embedded
nonvolatile
elements
incorporate
Simtek’s QuantumTrap™ technology producing the
world’s most reliable nonvolatile memory. The
SRAM provides unlimited read and write cycles,
while independent, nonvolatile data resides in the
highly reliable QuantumTrap
TM 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
COLUMN DEC
G
E
W
COLUMN I/O
POWER
CONTROL
HSB
STORE/
RECALL
CONTROL
SOFTWARE
DETECT
A13 – A0
A5
A6
A7
A8
A9
A11
A12
A13
A14
Quatum Trap
512 X 512
STATIC RAM
ARRAY
512 X 512
STORE
RECALL
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
A0 A1 A2 A3 A4 A10
VCC
VCAP
Figure 1. Block Diagram


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