MC9S12HZ256 Datasheet, PDF (303/692 Pages) Freescale Semiconductor, Inc – HCS12 Microcontrollers

Chapter 10 Stepper Stall Detector (SSDV1)
SINE COIL
CURRENT
+ Imax
0
_ _Imax
Recirculation
+ Imax
COSINE COIL
CURRENT
0
_ _Imax
0
1
2
3
Figure 10-10. Full Steps (CCW)
Figure 10-11 shows the current flow in the SINx and COSx H-bridges when STEP = 0, DCOIL = 1,
ITG = 0 and RCIR = 0.
VDDM
VDDM
T1
T3
T5
T7
COSxP
T2
COSxM
T4
SINxP
T6
SINxM
T8
VSSM
VSSM
Figure 10-11. Current Flow when STEP = 0, DCOIL = 1, ITG = 0, RCIR = 0
Figure 10-12 shows the current flow in the SINx and COSx H-bridges when STEP = 1, DCOIL = 1,
ITG = 0 and RCIR = 1.
MC9S12HZ256 Data Sheet, Rev. 2.04
Freescale Semiconductor
303