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AMIS-30421 Datasheet, PDF (11/41 Pages) ON Semiconductor – Micro-Stepping Stepper Motor Bridge Controller | |||
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AMISâ30421
NXT
(<NXTP> = 1)
NXT
(<NXTP> = 0)
ÃÃÃÃ DIR or
ÃÃÃÃ <DRCTRL>
ÃÃÃÃÃÃÃÃÃÃÃÃ <SM[2:0]>
ÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃ
<MSP[7:0]>
ÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃ
<SLP>
<MOTEN>
tMOTEN_SET
tDIR_SET
t SLP_SET
t DIR_HOLD
t MSP
tMOTEN_HOLD
tNXT_HI
tNXT_LOW
Remarks:
â<CIRCTRL>, <SM[2:0]>, <MSP[7:0]>, <SLP>, <MOTEN> and <NXTP> are SPI bits
âTiming for SPI bits starts after CS is high
âTSLP_SET only relates to the digital inputs pins DIR and NXT
Figure 6. Digital Input Timing Diagram
tSLP_HOLD
<SPI>
CLR
tCLR_SET
tCLR
Remarks:
<SPI> is any SPI data
Figure 7. CLRâpin Timing Diagram
CS
CLK
ÃÃDI ÃÃÃÃÃÃÃÃÃÃÃÃ
t DI_SET
tCS_SET
ÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃ
tDI_HOLD
t CS_HIGH
tCLK_HIGH
t CLK_LOW
t CLK
tCS_HOLD
Figure 8. SPI Bus Timing Diagram
http://onsemi.com
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