AMIS-30421 Datasheet, PDF (4/41 Pages) ON Semiconductor – Micro-Stepping Stepper Motor Bridge Controller

AMIS−30421
EQUIVALENT SCHEMATICS
Following figure gives the equivalent schematics of the user relevant inputs and outputs. The diagrams are simplified
representations of the circuits used.
VDD
VDD
IN
Rpd
OUT
TYPE 1: CLK, DI, NXT, DIR, CLR, TEST Input
VDD
Rpu
IN
TYPE 2: DO, WDb, ERRb Open Drain Output
VDD
OUT
TYPE 3: CSb Input
VDD
VDD
TYPE 4: DO, WDb, ERRb Push Pull Output
VDD
Rout
SLA
TYPE 6: SLA Analog Output
VBB1
VBB
TYPE 7: VDD Power Supply
TYPE 8: VBB Power Supply
NOTE: Output type of WDb−, ERRb− and DO−pin is selectable through SPI
Figure 3. In− and Output Equivalent Diagrams
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