Datasheet

167
7734Q–AVR–02/12
AT90PWM81/161
13.17 PSCR Input Mode 9: Fixed Frequency Edge Retrigger PSC
Figure 13-28. PSCR behavior versus PSCr Input A in Mode 9.
The output frequency is not modified by the occurrence of significative edge of retriggering input.
Only the output is deactivated when significative edge on retriggering input occurs.
Note: In this mode the output of the PSCR becomes active during the next ramp even if the
Retrigger/Fault input is active. Only the significative edge of Retrigger/Fault input is taken into
account.
Figure 13-29. PSCR behavior versus PSCr Input B in Mode 9.
The retrigger event is taken into account only if it occurs during the corresponding On-Time.
PSCOUTn0
PSCOUTn1
DT0
OT0
DT1 OT1
DT0 OT0 DT0 OT0
DT1 OT1 DT1 OT1
PSCn Input A
PSCOUTn0
PSCOUTn1
DT0
OT0
DT1 OT1
DT0 OT0 DT0 OT0
DT1 OT1 DT1 OT1
PSCn Input B