STK14CA8
128K x 8 AutoStoreTM nvSRAM
QuantumTrapTM CMOS
Nonvolatile Static RAM
FEATURES
DESCRIPTION
• 25ns, 35ns and 45ns Access Times
The Simtek STK14CA8 is a fast static RAM with a
nonvolatile element in each memory cell. The
embedded nonvolatile elements incorporate
• “Hands-off” Automatic STORE on Power Down
with only a small capacitor
Simtek’s QuantumTrapTM 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 QuantumTrapTM 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.
• STORE to QuantumTrap™ Nonvolatile
Elements is Initiated by Software , device pin
or AutoStore™ on Power Down
• RECALL to SRAM Initiated by Software or
Power Up
• Unlimited READ, WRITE and RECALL Cycles
• 5mA Typical ICC 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
• SOIC, SSOP and DIP Packages
• RoHS Compliance
BLOCK DIAGRAM
VCC
VCAP
Quantum Trap
1024 X 1024
A5
POWER
A6
A7
A8
A9
A12
A13
A14
A15
A16
CONTROL
STORE
RECALL
STORE/
RECALL
CONTROL
STATIC RAM
ARRAY
1024 X 1024
HSB
SOFTWARE
DETECT
A15 – A0
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
COLUMN I/O
COLUMN DEC
A0 A1 A2 A3 A4 A10 A11
G
E
W
Figure 1. Block Diagram
December 2004
1
Document Control #ML0022 rev 1.0
SIMTEK [ SIMTEK CORPORATION ]
