STK14CC8
512K x 8
AutoStore
nvSRAM
TM
QuantumTrap
CMOS
Nonvolatile Static RAM
Advanced Information
FEATURES
•
25ns Time
•
“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 Up
•
Unlimited
READ, WRITE
and
RECALL
Cycles
•
10mA Typical I
CC
at 200ns Cycle Time
•
500,000
STORE
Cycles to
QuantumTrap™
•
100-Year Data Retention to
QuantumTrap™
•
Single 3V +20%, -10% Operation
•
Commercial and Industrial Temperatures
•
SSOP package
•
RoHS Compliance
TM
DESCRIPTION
The Simtek STK14CC8 is a fast static RAM with a
nonvolatile element in each memory cell. The
embedded
nonvolatile
elements
incorporate
TM
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
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
A
8
A
9
A
10
A
11
A
12
A
13
A
14
A
15
A
16
A
17
A
18
DQ
0
DQ
1
DQ
2
DQ
3
DQ
4
DQ
5
DQ
6
DQ
7
Quantum Trap
2048 X 2048
ROW DECODER
STORE
STATIC RAM
ARRAY
2048 X 2048
RECALL
V
CC
V
CAP
POWER
CONTROL
STORE/
RECALL
CONTROL
HSB
SOFTWARE
DETECT
INPUT BUFFERS
COLUMN I/O
COLUMN DEC
A
18
– A
0
A
0
A
1
A
2
A
3
A
4
A
5
A
6
A
7
G
E
W
Figure 1. Block Diagram
September 2005
1
Document Control #ML0034 rev 0.0
SIMTEK [ SIMTEK CORPORATION ]
