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L9779WD-SPI Datasheet(PDF) 69 Page - STMicroelectronics |
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L9779WD-SPI Datasheet(HTML) 69 Page - STMicroelectronics |
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69 / 141 page  DocID027721 Rev 2 69/141 L9779WD-SPI Functional description 140 Figure 45. Stepper motor operation diagram The writing of DIR bit and PWM bit cannot be done in the same time, at least two consecutive SPI frames are necessary.(if done the stepper will move one step in the old direction). The writing of EN bit and PWM bit cannot be done in the same time, at least two consecutive SPI frames are necessary. (If done it is supposed that only the EN bit has been received). Table 30. Half bridge 1 H-bridge1 Comment Nominal current Ron max Switch off current (min.) Clamping (typ.) OUTA High-side P-Ch 0.6 A 1.7 1 A N/A Low-side N-Ch 0.6 A 1.5 1 A 45 V |
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