AMIS-30621 Datasheet, PDF (25/59 Pages) AMI SEMICONDUCTOR – LIN Microstepping Motordriver

AMIS−30621
Irun[3:0] Current amplitude value to be fed to each
coil of the stepper−motor. The table below
provides the 16 possible values for <IRUN>.
Ihold[3:0] Hold current for each coil of the
stepper−motor. The table below provides the 16
possible values for <IHOLD>.
Index
Irun
0
0
0
0
0
1
0
0
0
1
2
0
0
1
0
3
0
0
1
1
4
0
1
0
0
5
0
1
0
1
6
0
1
1
0
7
0
1
1
1
8
1
0
0
0
9
1
0
0
1
A
1
0
1
0
B
1
0
1
1
C
1
1
0
0
D
1
1
0
1
E
1
1
1
0
F
1
1
1
1
Run Current (mA)
59
71
84
100
119
141
168
200
238
283
336
400
476
566
673
800
Index
Ihold
0
0
0
0
0
1
0
0
0
1
2
0
0
1
0
3
0
0
1
1
4
0
1
0
0
5
0
1
0
1
6
0
1
1
0
7
0
1
1
1
8
1
0
0
0
9
1
0
0
1
A
1
0
1
0
B
1
0
1
1
C
1
1
0
0
D
1
1
0
1
E
1
1
1
0
F
1
1
1
1
Hold Current (mA)
59
71
84
100
119
141
168
200
238
283
336
400
476
566
673
800
Note: When the motor is stopped, the current is reduced
from <IRUN> to <IHOLD>.
StepMode Setting of step modes.
Step Mode
0
0
0
1
1
0
1
1
Step Mode
1/2 stepping
1/4 stepping
1/8 stepping
1/16 stepping
Shaft This bit distinguishes between a clock−wise or
counter−clock−wise rotation.
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