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PDF STK11C88 Data sheet ( Hoja de datos )
| Número de pieza | STK11C88 | |
| Descripción | 32Kx8 SoftStore nvSRAM | |
| Fabricantes | Simtek | |
| Logotipo |  |
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FEATURES
• 25, 45 ns Read Access & R/W Cycle Time
• Unlimited Read/Write Endurance
• Pin Compatible with Industry Standard SRAMs
• Software-initiated STORE and RECALL
• Automatic RECALL to SRAM on Power Up
• Unlimited RECALL Cycles
• 1 Million Store Cycles
• 100-Year Non-volatile Data Retention
• Single 5V ± 10% Power Supply
• Commercial and Industrial Temperatures
• 28-pin 300-mil and 330-mil SOIC Packages
(RoHS-Compliant)
DESCRIPTION
STK11C88
32Kx8 SoftStore nvSRAM
The Simtek STK11C88 is a 256Kb fast static RAM
with a non-volatile Quantum Trap storage element
included with each memory cell.
The SRAM provides the fast access & cycle times,
ease of use and unlimited read & write endurance of
a normal SRAM.
Data transfers under software control to the non-vol-
atile storage cell (the STORE operation). On power
up, data is automatically restored to the SRAM (the
RECALL operation). RECALL operations are also
available under software control.
The Simtek nvSRAM is the first monolithic non-
volatile memory to offer unlimited writes and reads.
It is the highest performance, most reliable non-
volatile memory available.
BLOCK DIAGRAM
A5
A6
A7
A8
A9
A11
A12
A13
A14
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
QUANTUM TRAP
512 x 512
STATIC RAM
ARRAY
512 X 512
STORE
RECALL
COLUMN I/O
COLUMN DEC
A0 A1 A2 A3 A4 A10
This product conforms to specifications per the
terms of Simtek standard warranty. The product
has completed Simtek internal qualification testing
and has reached production status.
1
STORE/
RECALL
CONTROL
SOFTWARE
DETECT
A13 – A0
G
E
W
Document Control #ML0012 Rev 0.3
February 2007
1 page  
SRAM WRITE CYCLES #1 & #2
SYMBOLS
NO.
#1 #2 Alt.
PARAMETER
12 tAVAV
13 tWLWH
14 tELWH
15 tDVWH
16 tWHDX
17 tAVWH
18 tAVWL
19 tWHAX
20 tWLQZh, i
21 tWHQX
tAVAV
tWLEH
tELEH
tDVEH
tEHDX
tAVEH
tAVEL
tEHAX
tWC Write Cycle Time
tWP Write Pulse Width
tCW Chip Enable to End of Write
tDW Data Set-up to End of Write
tDH Data Hold after End of Write
tAW Address Set-up to End of Write
tAS Address Set-up to Start of Write
tWR Address Hold after End of Write
tWZ Write Enable to Output Disable
tOW Output Active after End of Write
Note i: If W is low when E goes low, the outputs remain in the high-impedance state.
Note j: E or W must be ≥ VIH during address transitions.
SRAM WRITE CYCLE #1: W Controlledj
ADDRESS
12
tAVAV
14
tELWH
E
18
tAVWL
W
17
tAVWH
13
tWLWH
DATA IN
DATA OUT
20
tWLQZ
PREVIOUS DATA
15
tDVWH
DATA VALID
HIGH IMPEDANCE
SRAM WRITE CYCLE #2: E Controlledj
ADDRESS
E
18
tAVEL
12
tAVAV
14
tELEH
STK11C88
(VCC = 5.0V + 10%)
STK11C88-25 STK11C88-45
UNITS
MIN MAX MIN MAX
25 45 ns
20 30 ns
20 30 ns
10 15 ns
0 0 ns
20 30 ns
0 0 ns
0 0 ns
10 15 ns
5 5 ns
19
tWHAX
16
tWHDX
21
tWHQX
19
tEHAX
W
DATA IN
DATA OUT
17
tAVEH
13
tWLEH
15
tDVEH
DATA VALID
HIGH IMPEDANCE
16
tEHDX
Document Control #ML0012 Rev 0.3
February 2007
5
5 Page 
Ordering Codes
Part Number
STK11C88-SF25
STK11C88-SF45
STK11C88-NF25
STK11C88-NF45
STK11C88-SF25TR
STK11C88-SF45TR
STK11C88-NF25TR
STK11C88-NF45TR
STK11C88-SF25I
STK11C88-SF45I
STK11C88-NF25I
STK11C88-NF45I
STK11C88-SF25ITR
STK11C88-SF45ITR
STK11C88-NF25ITR
STK11C88-NF45ITR
Description
5V 32Kx8 SoftStore nvSRAM SOP28-330
5V 32Kx8 SoftStore nvSRAM SOP28-330
5V 32Kx8 SoftStore nvSRAM SOP28-300
5V 32Kx8 SoftStore nvSRAM SOP28-300
5V 32Kx8 SoftStore nvSRAM SOP28-330
5V 32Kx8 SoftStore nvSRAM SOP28-330
5V 32Kx8 SoftStore nvSRAM SOP28-300
5V 32Kx8 SoftStore nvSRAM SOP28-300
5V 32Kx8 SoftStore nvSRAM SOP28-330
5V 32Kx8 SoftStore nvSRAM SOP28-330
5V 32Kx8 SoftStore nvSRAM SOP28-300
5V 32Kx8 SoftStore nvSRAM SOP28-300
5V 32Kx8 SoftStore nvSRAM SOP28-330
5V 32Kx8 SoftStore nvSRAM SOP28-330
5V 32Kx8 SoftStore nvSRAM SOP28-300
5V 32Kx8 SoftStore nvSRAM SOP28-300
Temperature
Commercial
Commercial
Commercial
Commercial
Commercial
Commercial
Commercial
Commercial
Industrial
Industrial
Industrial
Industrial
Industrial
Industrial
Industrial
Industrial
STK11C88
Document Control #ML0012 Rev 0.3
February 2007
11
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet STK11C88.PDF ] | |
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