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L6472 数据表(PDF) 21 Page - STMicroelectronics |
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L6472 数据表(HTML) 21 Page - STMicroelectronics |
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21 / 69 page  L6472 Functional description Doc ID 022729 Rev 1 21/69 Figure 5. Charge pump circuitry 6.4 Microstepping The driver is able to divide the single step into up to 16 microsteps. Step mode can be programmed by the STEP_SEL parameter in the STEP_MODE register (see Table 19). Step mode can only be changed when bridges are disabled. Every time step mode is changed, the electrical position (i.e. the point of microstepping sinewave that is generated) is reset to the first microstep, and the absolute position counter value (see Section 6.5) becomes meaningless. Figure 6. Normal mode and microstepping (16 microsteps) |
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