Datasheet

127
7734Q–AVR–02/12
AT90PWM81/161
12.17 PSC Input Mode 9: Fixed Frequency Edge Retrigger PSC
Figure 12-35. PSC behavior versus PSCn 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 PSC becomes active during the next ramp even if the Retrig-
ger/Fault input is active. Only the significative edge of Retrigger/Fault input is taken into account.
Figure 12-36. PSC behavior versus PSCn 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