ACS8520 View Datasheet(PDF) - Semtech Corporation
Part Name
Description
MFG CO.
'ACS8520' PDF : 150 Pages View PDF
ACS8520 SETS
ADVANCED COMMUNICATIONS
FINAL
Figure 18 Write Access Timing in MULTIPLEXED Mode
ALE
CSB
WRB
tpw3
tp1
tsu1 th1
tsu2
tpw1
th2
DATASHEET
RDB
AD
RDY
address
X
td2
Z
tsu3
th4
data
td3
tpw2
th3
X
td5
Z
F8110D_012WriteAccMultiplex_01
Table 26 Write Access Timing in MULTIPLEXED Mode (For use with Figure 18)
Symbol
tsu1
tsu2
tsu3
td2
td3
td5
tpw1
tpw2
tpw3
th1
th2
th3
th4
tp1
tp2
Parameter
Set up AD address valid to ALEfalling edge
Set up CSBfalling edge to WRBfalling edge
Set up AD data valid to WRBrising edge
Delay CSBfalling edge to RDY active
Delay WRBfalling edge to RDYfalling edge
Delay CSBrising edge to RDY high-Z
WRB Low time
RDY Low time
ALE High time
Hold AD address valid after ALEfalling edge
Hold CSB Low after WRBrising edge
Hold WRB Low after RDYrising edge
AD data hold valid after WRBrising edge
Time between ALEfalling edge and WRBfalling edge
Time between consecutive accesses (WRBrising edge to ALErising edge)
MIN
5 ns
0 ns
5 ns
-
-
-
30 ns
15 ns
5 ns
9 ns
0 ns
0 ns
7 ns
0 ns
1600 ns
TYP
-
-
-
-
-
-
188 ns
-
-
-
-
-
-
-
-
MAX
-
-
-
13 ns
15 ns
9 ns
-
173 ns
-
-
-
-
-
-
-
Revision 3.02/October 2005 © Semtech Corp.
Page 49
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