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STK16CA8-WF45 Fiches technique(PDF) 1 Page - Simtek Corporation

No de pièce STK16CA8-WF45
Description  128K x 8 AutoStorePlus??nvSRAM QuantumTrap??CMOS Nonvolatile Static RAM
Download  12 Pages
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Fabricant  SIMTEK [Simtek Corporation]
Site Internet  http://www.simtek.com
Logo SIMTEK - Simtek Corporation

STK16CA8-WF45 Fiches technique(HTML) 1 Page - Simtek Corporation

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September 2003
1
Document Control # ML0023 rev 0.1
PIN CONFIGURATIONS
PIN NAMES
A0 - A16
Address Inputs
W
Write Enable
DQ0 - DQ7
Data In/Out
E
Chip Enable
G
Output Enable
VCC
Power (+ 3V)
VSS
Ground
STK16CA8
128K x 8 AutoStorePlus™nvSRAM
QuantumTrap™ CMOS
Nonvolatile Static RAM
Preliminary
FEATURES
• 25ns, 35ns and 45ns Access Times
• Directly Replaces 128K x 8 Static RAM, Bat-
tery-Backed RAM or EEPROM
• Transparent Data Save on Power Down
• STORE to QuantumTrap™ Nonvolatile Ele-
ments is Initiated by Software or AutoStore-
Plus™on Power Down
• RECALL to SRAM Initiated by Software or
Power Restore
• 5mA Typical I
CC at 200ns Cycle Time
• Unlimited READ and WRITE Cycles to SRAM
• 100-Year Data Retention to Quantum Trap
• Single 3V +20%, -10% Operation
• Commercial and Industrial Temperatures
• 32-Pin DIP Package
DESCRIPTION
The Simtek STK16CA8 is a fast static RAM with a
nonvolatile element in each static 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 inde-
pendent, nonvolatile data resides in the nonvolatile
elements. Data transfers from the SRAM to the non-
volatile elements (the STORE operation) can take
place automatically on power down or under soft-
ware control. An internal capacitor guarantees the
STORE
operation, even under extreme power-down
slew rates or loss of power from “hot swapping”.
Transfers from the nonvolatile elements to the SRAM
(the RECALL operation) take place automatically on
restoration of power. Initiation of STORE and RECALL
cycles can also be controlled by entering control
sequences on the SRAM inputs. The STK16CA8 is
pin-compatible with 128k x 8 SRAMs and battery-
backed SRAMs, allowing direct substitution while
providing superior performance.
BLOCK DIAGRAM
COLUMN I/O
COLUMN DEC
STATIC RAM
ARRAY
1024 x 1024
Quantum Trap
1024 x 1024
STORE/
RECALL
CONTROL
STORE
RECALL
POWER
CONTROL
A5
A6
A7
A8
A9
A12
A13
A14
A15
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
SOFTWARE
DETECT
G
E
W
VCC
A0 - A15
A16
A0 A1 A2 A3 A4 A10 A11
A13
A8
A9
A11
NC
A16
A12
A7
A6
A5
A4
A3
A2
A1
A0
DQ0
DQ1
DQ2
VSS
VCC
A15
W
A10
E
DQ7
DQ6
DQ5
DQ4
DQ3
NC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
A14
VCC
A15
G
A10
E
DQ7
DQ6
DQ5
DQ4
DQ3
NC


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