Maxim Integrated DS80C390 - Manual (Page 36)

DS80C390
36 of 58 110199
t
AVDV1
0.75 t
MCS
-20 ns C
ST
= 0
(C
ST
+0.375)
•
t
MCS
-20 1
≤
C
ST
≤
3
Port 0 Address, Port 4 CE,
Port 5 PCE to Valid Data In
(C
ST
+1.375)
•
t
MCS
-20 4
≤
C
ST
≤
7
t
AVDV2
0.875 t
MCS
-20 ns C
ST
= 0
(C
ST
+0.5)
•
t
MCS
-20 1
≤
C
ST
≤
3
Port 2, 4 Address to Valid
Data In
(C
ST
+1.5)
•
t
MCS
-20 4
≤
C
ST
≤
7
t
LLWL
0.125 t
MCS
-5 0.125 t
MCS
+5 ns C
ST
=0
0.25t
MCS
-5 0.25t
MCS
+5 1
≤
C
ST
≤
3
ALE Low to RD or WR
Low
1.25 t
MCS
-10 1.25 t
MCS
+10 4
≤
C
ST
≤
7
t
AVWL1
0.25 t
MCS
-5 ns C
ST
= 0
0.5t
MCS
-5 1
≤
C
ST
≤
3
Port 0 Address, Port 4 CE,
Port 5 PCE to RD or WR
Low
2.5 t
MCS
-10 4
≤
C
ST
≤
7
t
AVWL2
0.375 t
MCS
-5 ns C
ST
= 0
0.625t
MCS
-5 1
≤
C
ST
≤
3
Port 2, 4 Address to or WR
Low
2.625 t
MCS
-10 4
≤
C
ST
≤
7
Data Valid to WR
Transition
t
QVWX
-5 ns
Data hold after WR high
t
WHQX
0.25 t
MCS
-5 ns C
ST
= 0
0.5t
MCS
-5 1
≤
C
ST
≤
3
1.5 t
MCS
-10 4
≤
C
ST
≤
7
RD Low to Address Float t
RLAZ
-(0.125 t
MCS
-5) ns 0
≤
C
ST
≤
7
t
WHLH
0 10 ns C
ST
= 0
0.25 t
MCS
-5 0.25 t
MCS
+5 1
≤
C
ST
≤
3
RD or WR High to ALE,
Port 4 CE or Port 5 PCE
High
1.25 t
MCS
-10 1.25 t
MCS
+10 4
≤
C
ST
≤
7
NOTES FOR MOVX CHARACTERISTICS:
1. All parameters apply to both commercial and industrial temperature operation unless otherwise noted.
2. CST is the stretch cycle value as determined by the MD2, MD1, & MD0 bits of the CKCON register.
t
MCS
is a time period determined by the stretch cycle value, shown in the following table.
t
MCS
TIME PERIODS
System Clock Selection
2X 4X/
CD1 CD0 t
MCS
1 0 0 1 t
CLCL
0 0 0 2 t
CLCL
X 1 0 4 t
CLCL
X 1 1 1024 t
CLCL