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AMIS-30621 Datasheet(PDF) 8 Page - AMI SEMICONDUCTOR |
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AMIS-30621 Datasheet(HTML) 8 Page - AMI SEMICONDUCTOR |
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8 / 43 page  AMIS-30621 LIN Microstepping Motordriver Data Sheet AMI Semiconductor - Rev. 1.4 8 www.amis.com Vmax Vmax Stepping Mode Index (Full Step/s) Group Half-stepping 1/4th Micro-stepping 1/8th Micro-stepping 1/16th Micro-stepping (half-step/s) (micro-step/s) (micro-step/s) (micro-step/s) 099A 197 395 790 1579 1 136 273 546 1091 2182 2 167 334 668 1335 2670 3 197 B 395 790 1579 3159 4 213 425 851 1701 3403 5 228 456 912 1823 3647 6 243 486 973 1945 3891 7 273 546 1091 2182 4364 8 303 607 1213 2426 4852 9 334 C 668 1335 2670 5341 10 364 729 1457 2914 5829 11 395 790 1579 3159 6317 12 456 912 1823 3647 7294 13 546 1091 2182 4364 8728 14 729 D 1457 2914 5829 11658 15 973 1945 3891 7782 15564 Vmax Vmax Vimax (Full-step/s) Index Factor 99 136 167 197 213 228 243 273 303 334 364 395 456 546 729 973 01 99 136 167 197 213 228 243 273 303 334 364 395 456 546 729 973 1 1/32 3 4 5 6 6 7 7 8 8 10 10 11 13 15 19 27 2 2/32 6 8 10 11 12 13 14 15 17 19 21 23 27 31 42 57 3 3/32 9 12 15 18 19 21 22 25 27 31 32 36 42 50 65 88 4 4/32 12 16 20 24 26 28 30 32 36 40 44 48 55 65 88 118 5 5/32 15 21 26 31 32 35 37 42 46 51 55 61 71 84 111 149 6 6/32 18 25 31 36 39 42 45 50 55 61 67 72 84 99 134 179 7 7/32 21 30 36 43 46 50 52 59 65 72 78 86 99 118 156 210 8 8/32 24 33 41 49 52 56 60 67 74 82 90 97 113 134 179 240 9 9/32 28 38 47 55 59 64 68 76 84 93 101 111 128 153 202 271 10 10/32 31 42 51 61 66 71 75 84 93 103 113 122 141 168 225 301 11 11/32 34 47 57 68 72 78 83 93 103 114 124 135 156 187 248 332 12 12/32 37 51 62 73 79 85 91 101 113 124 135 147 170 202 271 362 13 13/32 40 55 68 80 86 93 98 111 122 135 147 160 185 221 294 393 14 14/32 43 59 72 86 93 99 106 118 132 145 158 172 198 237 317 423 15 15/32 46 64 78 93 99 107 113 128 141 156 170 185 214 256 340 454 8.0 Positioning Data 8.1 Stepping Modes One of four possible stepping modes can be programmed: • Half-stepping • 1/4 micro-stepping • 1/8 micro-stepping • 1/16 micro-stepping 8.2 Maximum Velocity For each stepping mode, Vmax can be programmed to 16 possible values given in the table below. 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. 8.3 Minimum Velocity Once Vmax is chosen, 16 possible values can be programmed for Vmin. The table below provides the obtainable values in Full-step/s. The accuracy of Vmin is derived from the internal oscillator. 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. |
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