Freescale Semiconductor MC9S12ZVHL32, Reference Manual

Page: 633 / 874

Chapter 17 Stepper Stall Detector (SSDV2) Block Description
S12ZVHY/S12ZVHL Family Reference Manual Rev. 1.05
Freescale Semiconductor 633
0 and so on. Figure 17-10 shows the current level through each coil for each full step in CCW rotation
when DCOIL is set.
Figure 17-10. Full Steps (CCW)
Figure 17-11 shows the current flow in the SIN and COS H-bridges when STEP = 0, DCOIL = 1, ITG = 0
and RCIR = 0.
Figure 17-11. Current Flow when STEP = 0, DCOIL = 1, ITG = 0, RCIR = 0
Figure 17-12 shows the current flow in the SIN and COS H-bridges when STEP = 1, DCOIL = 1, ITG = 0
and RCIR = 1.
0
1
2
3
0
Imax +
_ Imax
0
Imax +
_ Imax
SINE COIL
CURRENT
COSINE COIL
CURRENT
Recirculation
VDDM
COSP COSM
T1
T2
T3
T4
VSSM
VDDM
SINP SINM
T5
T6
T7
T8
VSSM