Справочник Пользователя для Freescale Semiconductor Demonstration Board for Freescale MC9S12XHY256 Microcontroller DEMO9S12XHY256 DEMO9S12XHY256
Модели
DEMO9S12XHY256
Stepper Stall Detector (SSDV1) Block Description
MC9S12XHY-Family Reference Manual, Rev. 1.04
Freescale Semiconductor
701
21.2
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. The SSD is capable
of multiplexing between stepper motor A and stepper motor B if two motors are connected.
drive the sine and cosine coils of a stepper motor to provide four-quadrant operation. The SSD is capable
of multiplexing between stepper motor A and stepper motor B if two motors are connected.
21.2.1
COSxM/COSxP — Cosine Coil Pins for Motor x
These pins interface to the cosine coils of a stepper motor to measure the back EMF for calibration of the
pointer reset position.
pointer reset position.
21.2.2
SINxM/SINxP — Sine Coil Pins for Motor x
These pins interface to the sine coils of a stepper motor to measure the back EMF for calibration of the
pointer reset position.
pointer reset position.
Table 21-1. Pin Table
1
1
x = A or B indicating motor A or motor B
Pin Name
Node
Coil
COSxM
Minus
COSx
COSxP
Plus
SINxM
Minus
SINx
SINxP
Plus