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UPD168113 Datasheet(PDF) 42 Page - NEC |
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UPD168113 Datasheet(HTML) 42 Page - NEC |
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42 / 50 page  Data Sheet S16423EJ2V0DS 42 µ PD168113 12. STEPPING MOTOR DRIVING WAVEFORM Figure 12 −1. Two-phase Excitation Output Mode Figure 12 −2. 1-2 Phase Excitation Output Mode Phase A current 100% 01234 5678 −100% 100% 01234 5678 −100% Phase B current 100% 70% 01234 5678 −100% −70% 100% 70% 01234 5678 −100% −70% Phase A current Phase B current Remarks 1. Solid line: Output duty 100% drive, Dotted line: Current control drive (The current is in accordance with the current setting.) 2. The horizontal axis of the above charts indicates the number of steps. The above charts show an example in the CW (forward) mode. The current flowing into phases A and B is positive in the direction from OUT pin A to OUT pin B, and negative in the direction from OUT pin B to OUT pin A. |
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