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STK14D88-R35

Description
32K x 8 AutoStore nvSRAM CMOS Nonvolatile Static RAM
File Size216KB,15 Pages
ManufacturerETC
Download Datasheet View All

STK14D88-R35 Overview

32K x 8 AutoStore nvSRAM CMOS Nonvolatile Static RAM

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
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
5
A
6
A
7
A
8
A
9
A
11
A
12
A
13
A
14
Quatum Trap
512 X 512
ROW DECODER
STORE
STATIC RAM
ARRAY
512 X 512
RECALL
V
CC
V
CAP
POWER
CONTROL
STORE/
RECALL
CONTROL
HSB
SOFTWARE
DETECT
INPUT BUFFERS
COLUMN I/O
COLUMN DEC
A
13
– A
0
DQ
0
DQ
1
DQ
2
DQ
3
DQ
4
DQ
5
DQ
6
DQ
7
A
0
A
1
A
2
A
3
A
4
A
10
G
E
W
Figure 1. Block Diagram
April 2005
1
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