2-Phase Stepper Motor Unipolar Driver ICs (2W1-2 Phase Excitation/Micro-step Support)
SLA7042M/SLA7044M
sExternal
Dimensions
φ
3.2
±0.15
31
±0.2
24.4
±0.2
16.4
±0.2
(Unit: mm)
φ
3.2
±0.15
x3.8
4.8
±0.2
1.7
±0.1
9.9
±0.2
16
±0.2
13
±0.2
Lot No.
(3) 6.7
±0.5
0.55
+0.2
−0.1
1
−0.1
17xP1.68
±0.4
=28.56
±1
+0.2
0.65
−0.1
+0.2
1
−0.1
17xP1.68
±0.4
+0.2
0.55
−0.1
4
±0.7
+0.2
2.2
±0.1
6
±0.6
7.5
±0.6
=28.56
±1
31.3
±0.2
1 2 3 • • • • • • • • • • • • 16 17 18
1 2 3 • • • • • • • • • • • • 16 17 18
Forming No. No.871
Forming No. No.872
sSerial
Data Pattern
OUT excitation (MODE
χ
)
Phase
a
b
c
0
OUT excitation (MODE
χ
)
Phase
a
b
c
CLOCK
STROBE
MODE0
(0%)
MODE1
(20%)
MODE2
(40%)
MODE3
(55.5%)
MODE4
(71.4%)
MODE5
(83%)
MODE6
(91%)
MODE7
(100%)
0
0
0
0
0
0
0
0
0
See page 48 for details of
PG001M serial signal gen-
erator IC for SLA7042M and
SLA7044M.
DATA
0
0
0
0
0
0
0
0
0
0
Successively output this serial data and set any current. Then, determine the step
time of the reference voltage V
ref
at STROBE signal intervals.
46
SLA7042M/SLA7044M
1.6
±0.6
R-End
9.7
−
0.1
+0.2
0.65
−0.1
+0.2
3
±0.6
±0.6
4.6
Part No.
2.45
±0.2