Rainbow-electronics ATmega64C1 Manuale Utente Scaricare il pdf (Pagina 139)

100

101

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

Run

POCRnSA

On-Time 1

On-Time 0

PSCOUTnA

PSCOUTnB

PSC Cycle

Dead-Time

On-Time 1

Dead-Time

PSC Counter

POCRnRB

POCRnSA

POCRnSB

1 2 ... 134 135 136 137 138 139 140 141 142 143 144 ... 365 366

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