P4C164-10JI データシートの表示（PDF） - Performance Semiconductor
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P4C164-10JI Datasheet PDF : 8 Pages
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P4C164/164L
AC CHARACTERISTICS—WRITE CYCLE
(VCC = 5V ± 10%, All Temperature Ranges)(2)
Sym.
Parameter
-8
-10
-12
-15
-20
-25
-35
-45
Unit
Min Max Min Max Min Max Min Max Min Max Min Max Min Max Min Max
t
WC
Write Cycle Time 8
10
12
15
20
25
35
45
ns
tCW Chip Enable
6
7
8
12
15
18
25
33
ns
Time to End of
Write
tAW Address Valid to 7
End of Write
8
10
12
15
18
25
33
ns
tAS Address Set-up 0
0
0
0
0
0
0
0
ns
Time
tWP Write Pulse
7
8
9
12
15
18
20
25
ns
Width
tAH Address Hold
0
0
0
0
0
0
0
0
ns
Time
tDW Data Valid to
6
7
8
9
11
13
15
20
ns
End of Write
tDH Date Hold Time 0
0
0
0
0
0
0
0
ns
tWZ Write Enable to
6
7
7
7
8
10
14
18 ns
Output in High Z
tOW Output Active
3
3
3
3
3
3
3
3
ns
from End of Write
WRITE CYCLE NO. 1 (WE CONTROLLED)(11)
ADDRESS
CE 1
t CW
(14)
t WC
CE 2
WE
DATA IN
(12)
DATA OUT
t AW
t WP
t WR
t AH
t AS
DATA UNDEFINED
t
(8)
WZ
t DW
DATA VALID
t DH
t
(8,13)
OW
HIGH IMPEDANCE
Notes:
11.
CE
1
and
WE
must be LOW,
and CE2
HIGH for
WRITE
cycle.
12. OE is LOW for this WRITE cycle to show tWZ and tOW.
13.
If
CE
1
goes
HIGH,
or
CE2
goes
LOW,
simultaneously
with
WE
HIGH,
the output remains in a high impedance state.
14. Write Cycle Time is measured from the last valid address to the first
transitioning address.
96
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