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STK20C04-W30I Datasheet(PDF) 5 Page - List of Unclassifed Manufacturers

No. de pieza STK20C04-W30I
Descripción Electrónicos  CMOS nvSRAM High Performance 512 x 8 Nonvolatile Static RAM
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Fabricante Electrónico  ETC [List of Unclassifed Manufacturers]
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STK20C04-W30I Datasheet(HTML) 5 Page - List of Unclassifed Manufacturers

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STK20C04
2-43
22
tWLQX
p
tELQXS
tSTORE
STORE Cycle Time
10
ms
23
tWLNH
q
tELNHS
tWC
STORE Initiation Cycle Time
45
ns
24
tGHNL
Output Disable Set-up to NE Fall
0
ns
25
tGHEL
Output Disable Set-up to E Fall
0
ns
26
tNLWL
tNLEL
NE Set-up
0ns
27
tELWL
Chip Enable Set-up
0ns
28
tWLEL
Write Enable Set-up
0
ns
(VCC = 5.0V ± 10%)
STORE CYCLES #1 & #2
NE
G
W
E
DQ (Data Out)
HIGH IMPEDANCE
26
tNLEL
25
tGHEL
28
tWLEL
23
tELNHS
22
tELQXS
STORE CYCLE #2: E CONTROLLEDo
HIGH IMPEDANCE
NE
G
W
E
DQ (Data Out)
24
tGHNL
26
tNLWL
23
tWLNH
27
tELWL
22
tWLQX
STORE CYCLE #1: W CONTROLLEDo
#1
#2
Alt.
SYMBOLS
NO.
PARAMETER
MIN
MAX
UNITS
Note: n: An automatic
RECALL also takes place at power up, starting when VCC exceeds 3.8V, and taking tRECALL from the time at which VCC exceeds 4.5V.
VCC must not drop below 3.8V once it has exceeded it for the RECALL to function properly.
Note o: If E is low for any period of time in which W is high while G and NE are low, then a
RECALL cycle may be initiated.
Note p: Measured with W and NE both returned high, and G returned low. Note that
STORE cycles are inhibited/aborted by VCC < 3.8V (STORE inhibit).
Note q: Once tWC has been satisfied by NE, G, W and E, the STORE cycle is completed automatically. Any of NE, G, W or E may be used to terminate the
STORE initiation cycle.
H
X
X
X
Not Selected
Standby
L
H
L
H
Read RAM
Active
L
L
X
H
Write RAM
Active
L
H
L
L
Nonvolatile
RECALLn
Active
L
L
H
L
Nonvolatile
STORE
ICC
L
L
L
L
No operation
Active
LH
H
X
E
W
G
NE
MODE
POWER
2
MODE SELECTION
NONVOLATILE MEMORY OPERATION


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