P4C1681I-sspt ETC, P4C1681I-sspt Datasheet - Page 5

• Manufacturer Part Number: P4C1681I-sspt
• Description: ULTRA HIGH SPEED 4K x 4 STATIC CMOS RAMS
• Manufacturer: ETC

AC ELECTRICAL CHARACTERISTICS—WRITE CYCLE
(V
WRITE CYCLE NO. 1 (WE
Notes:
10. CE and WE must be LOW for WRITE cycle.
11. If CE goes HIGH simultaneously with WE HIGH, the output
Symbol
†
£
CC
P4C1682 only.
P4C1681 only.
remains in a high impedance state.
t
t
t
t
t
t
t
t
t
t
t
t
WC
CW
AW
AS
WP
AH
DW
DH
WZ
OW
AWE
ADV
= 5V
10%, All Temperature Ranges)
DATA OUT
DATA OUT
ADDRESS
Write Cycle Time
Chip Enable Time
to End of Write
Address Valid to
End of Write
Address Set-up
Time
Write Pulse Width
Address Hold
Time
Data Valid to
End of Write
Data Hold Time
Write Enable to
Output in High Z
Output Active to
End of Write
Write Enable to
Data-out Valid
Data-in Valid to
Data-out Valid
P4C1682
P4C1681
DATA IN
Parameter
WE
CE
£
WE
WE controlled)
WE
WE
†
t
AS
DATA UNDEFINED
Min Max
12
12
12
12
0
0
7
0
0
-12
(2)
12
12
4
Min Max Min Max Min
(10)
15
15
15
15
t
0
0
8
0
0
WZ
-15
(8)
t
15
15
CW
5
t
t
AW
AWE
45
18
18
18
18
10
12. Write Cycle Time is measured from the last valid address to the
0
0
0
0
t
t
-20
WP
t
ADV
WC
first transitioning address.
(12)
(8)
t
20
20
DW
HIGH IMPEDANCE
DATA VALID
7
20
20
20
20
10
0
0
0
0
-25
Max Min Max
25
25
7
DATA VALID
t
OW
t
t
t
30
25
25
25
15
WR
AH
DH
(8,11)
0
0
0
0
-35
13
30
30
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
P4C1681, P4C1682