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NJU39610FM2 Datasheet(PDF) 10 Page - New Japan Radio |
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NJU39610FM2 Datasheet(HTML) 10 Page - New Japan Radio |
10 / 11 page NJU39610 s Programming NJU39610 There are basically two different ways of programming the NJU39610. They are called “single-pulse programming” and “double-pulse programming.” Writing to the device can only be accomplished by addressing one register at a time. When taking one step, at least two registers are normally updated. Accordingly there must be a certain time delay between writing to the first and the second register. This programming necessity gives some special stepping advantages. Double-pulse Programming The normal way is to send two write pulses to the device, with the correct addressing in between, keeping the delay between the pulses as short as possible. Write signals will look as illustrated in figure9. The advantages are: • low torque ripple • correct step angles between each set of double pulses • short compromise position between the two step pulses • normal microstep resolution Single-pulse Programming A different approach is to send one pulse at a time with an equally-spaced duty cycle. This can easily be accom- plished and any two adjacent data will make up a microstep position. Write signals will look as in figure 10. The advantages are: • higher microstep resolution • smoother motion The disadvantages are: • higher torque ripple • compromise positions with almost-correct step angles |
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