AK2571 Datasheet, PDF (43/52 Pages) Asahi Kasei Microsystems – Single-Chip Automatic Power/Temperature Control for WDM Laser Diodes

AKM Confidential
AK2571
(6) Digital Input / Output AC characteristics（Beside Serial Interface）
Parameter
Pin Symbol min
typ
max
Reset pulse width
Tpwr
RESETN
200
-
-
Unite Remarks
ns Refer figure 1
Note) Duty Cycle：（Tpwh／(Tpwh＋Tpwl））×100 %
Tpwh Tpwl
RESETN ^50%
50%
SKN
50%
50% 50%
Tpwr
Figure 1 Reset pulse width
Figure 2 Input Clock Duty Cycle
(7) Digital Input / Output AC characteristics（Serial Interface）
Parameter
Pin Symbol min
typ
SK interval
SK Tskp
1
-
SK Duty Cycle
SK
40
50
CSN setup time before SK fall
CSN
SK
Tcss
100
-
CSN hold time after SK rise
CSN
SK
Tcsh
100
-
SK setup time before CSN fall
CSN
SK
Tsksl
100
Input clock and data setup / SK Tdis
hold time
DI Tdih
200
-
SK fall to DO output latency SK
DO Tpd
-
-
READY
Programming time
Te/w
10
-
CSN high level hold time after READY
raise READY
CSN
Trch
100
CSN high level to DO output CSN
latency
DO Toz
*1) SK must be high when CSN transitions to Low.
*2) When writing in EEPROM
It is forbidden to read or write continuously by keeping CSN low.
max Unite Remarks
-
μs Refer figure 3
60
％ Refer figure 2
-
ns
Refer figure 3
*1)
-
ns ^{Refer figure 4}
ns ^{Refer figure 6}
-
ns ^{Refer figure 3, 5}
300
ns
Refer figure 4,6
CL＝50pF
-
ms
Refer figure 5
*2)
ns
Refer figure 5
*2)
100
ns Refer figure 4,6
<Rev. 0.6E Preliminary>
-43-
2001/11