Datasheet

107
7734Q–AVR–02/12
AT90PWM81/161
Figure 12-7. PSCn0 & PSCn1 basic waveforms in Two Ramp mode.
PSCOUTn0 and PSCOUTn1 signals are defined by On-Time 0, Dead-Time 0, On-Time 1 and
Dead-Time 1 values with:
On-Time 0 = (OCRnRAH/L - OCRnSAH/L) × 1/Fclkpsc
On-Time 1 = (OCRnRBH/L - OCRnSBH/L) × 1/Fclkpsc
Dead-Time 0 = (OCRnSAH/L + 1) × 1/Fclkpsc
Dead-Time 1 = (OCRnSBH/L + 1) × 1/Fclkpsc
Note: Minimal value for Dead-Time 0 and Dead-Time 1 = 1/Fclkpsc.
12.5.2.3 One Ramp Mode
In One Ramp mode, PSCOUTn0 and PSCOUTn1 outputs can overlap each other.
On-Time 0 On-Time 1
PSCOUTn0
PSCOUTn1
Dead-Time 1
Dead-Time 0
PSC Cycle
OCRnRB
OCRnSB
OCRnRA
OCRnSA
PSC Counter
00