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STK11C68-5K45M Arkusz danych(PDF) 1 Page - List of Unclassifed Manufacturers

Numer części STK11C68-5K45M
Szczegółowy opis  CMOS NV SRAM
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STK11C68-5K45M Arkusz danych(HTML) 1 Page - List of Unclassifed Manufacturers

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STK11C68-M
4-31
STK11C68-M
CMOS nvSRAM
High Performance
8K x 8 Nonvolatile Static RAM
MIL-STD-883/SMD # 5962-92324
LOGIC BLOCK DIAGRAM
PIN CONFIGURATIONS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
NC
A
A
A
A
A
A
A
A
DQ
DQ
DQ
DQ
DQ
DQ
DQ
DQ
V
V
W
NC
A
A
G
A
E
SS
7
6
5
4
3
2
1
0
0
1
2
8
9
10
7
6
5
4
3
CC
A 11
A 12
28 - 300 C-DIP
28 - LCC
PIN NAMES
A
A
A
A
A
A
4
5
6
7
8
EEPROM ARRAY
256 x 256
STORE
RECALL
STATIC RAM
ARRAY
256 x 256
STORE/
RECALL
CONTROL
AA
A
A
A
0
12
10
12
DQ
DQ
DQ
DQ
DQ
DQ
DQ
DQ
0
1
2
3
4
5
6
7
G
E
W
COLUMN I/O
COLUMN DECODER
AA
011
A3
A
9
12
A
0 - A12
Address Inputs
W
Write Enable
DQ0 - DQ7
Data In/Out
E
Chip Enable
G
Output Enable
VCC
Power (+5V)
V
SS
Ground
DESCRIPTION
The Simtek STK11C68-M is a fast static RAM (35, 45
and 55ns), with a nonvolatile electrically-erasable PROM
(EEPROM) element incorporated in each static memory
cell. The SRAM can be read and written an unlimited
number of times, while independent nonvolatile data
resides in EEPROM. Data transfers from the SRAM to
the EEPROM (STORE), or from the EEPROM to the
SRAM
(RECALL) are initiated through software se-
quences. It combines the high performance and ease
of use of a fast SRAM with nonvolatile data integrity.
The STK11C68-M is pin compatible with industry stan-
dard SRAMs and is available in a 28-pin 300 mil
ceramic DIP or 28-pad LCC package. Commercial and
industrial devices are also available.
FEATURES
• 35, 45 and 55ns Access Times
• 17, 20 and 25ns Output Enable Access
• Unlimited Read and Write to SRAM
• Software STORE Initiation
• Automatic STORE Timing
• 100,000 STORE cycles to EEPROM
• 10 year data retention in EEPROM
• Automatic RECALL on Power Up
• Software RECALL Initiation
• Unlimited RECALL cycles from EEPROM
• Single 5V
± 10% Operation
• Available in multiple standard packages
A
A
A
A
A
A
A
A
A
A
DQ
DQ
DQ
G
A
E
DQ
NC
6
5
4
3
2
1
0
0
1
8
9
11
10
7
6
TOP VIEW
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7
8
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32
1
28 27
26
25
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