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STK14CA8

128K x 8

AutoStore

nvSRAM

TM

QuantumTrap

CMOS

Nonvolatile Static RAM

FEATURES

鈥?/div>

25ns, 35ns and 45ns Access Times

鈥?/div>

鈥淗ands-off鈥?Automatic

STORE

on Power Down

with only a small capacitor

鈥?/div>

STORE

to

QuantumTrap鈩?/div>

Nonvolatile

Elements is Initiated by Software , device pin

or

AutoStore鈩?/div>

on Power Down

鈥?/div>

RECALL

to SRAM Initiated by Software or

Power Up

鈥?/div>

Unlimited

READ, WRITE

and

RECALL

Cycles

鈥?/div>

5mA Typical I

CC

at 200ns Cycle Time

鈥?/div>

1,000,000

STORE

Cycles to

QuantumTrap鈩?/div>

鈥?/div>

100-Year Data Retention to

QuantumTrap鈩?/div>

鈥?/div>

Single 3V +20%, -10% Operation

鈥?/div>

Commercial and Industrial Temperatures

鈥?/div>

SOIC, SSOP and DIP Packages

鈥?/div>

RoHS Compliance

TM

DESCRIPTION

The Simtek STK14CA8 is a fast static RAM with a

nonvolatile element in each memory cell. The

embedded

nonvolatile

elements

incorporate

TM

Simtek鈥檚

QuantumTrap

technology producing the

world鈥檚 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

Quantum Trap

1024 X 1024

ROW DECODER

STORE

STATIC RAM

ARRAY

1024 X 1024

RECALL

V

CC

V

CAP

A

5

A

6

A

7

A

8

A

9

A

12

A

13

A

14

A

15

A

16

DQ

0

DQ

1

DQ

2

DQ

3

DQ

4

DQ

5

DQ

6

DQ

7

POWER

CONTROL

STORE/

RECALL

CONTROL

HSB

SOFTWARE

DETECT

INPUT BUFFERS

COLUMN I/O

COLUMN DEC

A

15

鈥?A

0

A

0

A

1

A

2

A

3

A

4

A

10

A

11

G

E

W

Figure 1. Block Diagram

December 2004

1

Document Control #ML0022 rev 1.0

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描述

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