AMIS-30623 AMI Semiconductor, Inc., AMIS-30623 Datasheet - Page 13

• Manufacturer Part Number: AMIS-30623
• Description: Lin Microstepping Motordriver
• Manufacturer: AMI Semiconductor, Inc.

AMIS-30623 LIN Microstepping Motordriver
13.2 Maximum Velocity
For each stepping mode, the maximum velocity Vmax can be programmed to 16 possible values given in
The accuracy of Vmax is derived from the internal oscillator. Under special circumstances it is possible to change the Vmax parameter
while a motion is ongoing. All 16 entries for the Vmax parameter are divided into four groups. When changing Vmax during a motion the
application must take care that the new Vmax parameter stays within the same group.
Table 8: Maximum Velocity Selection Table
13.3 Minimum Velocity
Once the maximum velocity is chosen, 16 possible values can be programmed for the minimum velocity Vmin.
Table 9
Table 9: Obtainable Values in Full-step/s for the Minimum Velocity
Notes
(1) The Vmax factor is an approximation.
(2) In case of motion without acceleration (AccShape = 1) the length of the steps = 1/Vmin. In case of accelerated motion (AccShape = 0) the length of the first step is
shorter than 1/Vmin depending of Vmin, Vmax and Acc.
Vmin index
Hex
A
B
C
D
E
Hex
0
1
2
3
4
5
6
7
8
9
F
AMI Semiconductor – June 2006, Rev 3.0
www.amis.com
Vmax index
A
B
C
D
E
0
1
2
3
4
5
6
7
8
9
F
Dec
provides the obtainable values in full-step/s. The accuracy of Vmin is derived from the internal oscillator.
10
11
12
13
14
15
0
1
2
3
4
5
6
7
8
9
Dec
10
11
12
13
14
15
0
1
2
3
4
5
6
7
8
9
factor
Vmax
10/32
11/32
12/32
13/32
14/32
15/32
1/32
2/32
3/32
4/32
5/32
6/32
7/32
8/32
9/32
1
(full step/s)
99
99
12
15
18
21
24
28
31
34
37
40
43
46
Vmax
A
3
6
9
136
167
197
213
228
243
273
303
334
364
395
456
546
729
973
99
136
136
12
16
21
25
30
33
38
42
47
51
55
59
64
4
8
167
167
Group
10
15
20
26
31
36
41
47
51
57
62
68
72
78
5
A
B
C
D
197
197
11
18
24
31
36
43
49
55
61
68
73
80
86
93
6
B
Half-stepping
(half-step/s)
213
213
12
19
26
32
39
46
52
59
66
72
79
86
93
99
6
1091
1457
1945
197
273
334
395
425
456
486
546
607
668
729
790
912
228
228
107
13
21
28
35
42
50
56
64
71
78
85
93
99
7
13
243
243
106
113
14
22
30
37
45
52
60
68
75
83
91
98
7
Vmax (Full-step/s)
micro-stepping
(micro-step/s)
273
273
101
111
118
128
15
25
32
42
50
59
67
76
84
93
8
1091
1213
1335
1457
1579
1823
2182
2914
3891
1/4
395
546
668
790
851
912
973
th
303
303
103
113
122
132
141
17
27
36
46
55
65
74
84
93
8
Stepping mode
334
334
103
114
124
135
145
156
10
19
31
40
51
61
72
82
93
C
micro-stepping
(micro-step/s)
364
364
101
113
124
135
147
158
170
10
21
32
44
55
67
78
90
1091
1335
1579
1701
1823
1945
2182
2426
2670
2914
3159
3647
4364
5829
7782
1/8
790
395
395
111
122
135
147
160
172
185
th
11
23
36
48
61
72
86
97
Table 8
456
456
113
128
141
156
170
185
198
214
13
27
42
55
71
84
99
micro-stepping
546
546
118
134
153
168
187
202
221
237
256
(micro-step/s)
15
31
50
65
84
99
Data Sheet
11658
15564
1/16
1579
2182
2670
3159
3403
3647
3891
4364
4852
5341
5829
6317
7294
8728
729
729
111
134
156
179
202
225
248
271
294
317
340
19
42
65
88
D
th
973
973
118
149
179
210
240
271
301
332
362
393
423
454
27
57
88