Rainbow Electronics ATmega64C1 - Manual (Page 139)

139
7647A–AVR–02/08
ATmega32/64/M1/C1
Figure 14-5. Controlled Start and Stop Mechanism in One-Ramp Mode
Note: See “PSC Control Register – PCTL” on page 153. (PCCYC = 1)
14.5.3.2 Center Aligned Mode
In center aligned mode, the center of PSCOUTnA and PSCOUTnB signals are centered.
Figure 14-6. PSCOUTnA & PSCOUTnB Basic Waveforms in Center Aligned Mode
On-Time 0 = 2 * POCRnSAH/L * 1/Fclkpsc
On-Time 1 = 2 * (POCRnRBH/L - POCRnSBH/L + 1) * 1/Fclkpsc
Dead-Time = (POCRnSBH/L - POCRnSAH/L) * 1/Fclkpsc
PSCOUTnA
PSCOUTnB
PSC Counter
POCRnRB
POCRnRA
POCRnSB
0
Run
POCRnSA
On-Time 1
On-Time 0
PSCOUTnA
PSCOUTnB
PSC Cycle
Dead-Time
On-Time 1
Dead-Time
PSC Counter
POCRnRB
POCRnSA
POCRnSB
0