Datasheet

139
4317K–AVR–03/2013
AT90PWM2/3/2B/3B
Figure 16-8. PSCn0 & PSCn1 Basic Waveforms in One Ramp mode
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 - OCRnRAH/L) * 1/Fclkpsc
Note: Minimal value for Dead-Time 0 = 1/Fclkpsc
16.5.2.4 Center Aligned Mode
In center aligned mode, the center of PSCn0 and PSCn1 signals are centered.
On-Time 0 On-Time 1
PSCOUTn0
PSCOUTn1
Dead-Time 1
Dead-Time 0
PSC Cycle
OCRnRB
OCRnSB
OCRnRA
OCRnSA
PSC Counter
0