Chapter 17 Stepper Stall Detector (SSDV2) Block Description
S12ZVHY/S12ZVHL Family Reference Manual Rev. 1.05
Freescale Semiconductor
623
17.2
External Signal Description
Each SSD signal is the output pin of a half bridge, designed to source or sink current. The H-bridge pins
drive the sine and cosine coils of a stepper motor to provide four-quadrant operation.
17.2.1
COSM/COSP — Cosine Coil Pins for Motor
These pins interface to the cosine coils of a stepper motor to measure the back EMF for calibration of the
pointer reset position.
17.2.2
SINM/SINP — Sine Coil Pins for Motor
These pins interface to the sine coils of a stepper motor to measure the back EMF for calibration of the
pointer reset position.
Table 17-2. Pin Table
Pin Name
Node
Coil
COSM
Minus
COS
COSP
Plus
SINM
Minus
SIN
SINP
Plus