ATA5771 ATMEL Corporation, ATA5771 Datasheet - Page 160

• Manufacturer Part Number: ATA5771
• Manufacturer: ATMEL Corporation

108
ATtiny24/44/84
Table 12-3 on page 108
the fast PWM mode.
Table 12-3.
Note:
Table 12-4
correct or the phase and frequency correct, PWM mode.
Table 12-4.
Note:
• Bit 1:0 – WGM11:0: Waveform Generation Mode
Combined with the WGM13:2 bits found in the TCCR1B Register, these bits control the counting
sequence of the counter, the source for maximum (TOP) counter value, and what type of wave-
form generation to be used, see
Timer/Counter unit are: Normal mode (counter), Clear Timer on Compare match (CTC) mode,
and three types of Pulse Width Modulation (PWM) modes.
COM1A1/COM1B1
COM1A1/COM1B1
1. A special case occurs when OCR1A/OCR1B equals TOP and COM1A1/COM1B1 is set. In
1. A special case occurs when OCR1A/OCR1B equals TOP and COM1A1/COM1B1 is set.
0
0
1
1
0
0
1
1
this case the compare match is ignored, but the set or clear is done at BOTTOM.
Mode” on page 99
“Phase Correct PWM Mode” on page 101
shows the COM1x1:0 bit functionality when the WGM13:0 bits are set to the phase
Compare Output Mode, Fast PWM
Compare Output Mode, Phase Correct and Phase & Frequency Correct PWM
shows the COM1x1:0 bit functionality when the WGM13:0 bits are set to
COM1A0/COM1B0
COM1A0/COM1B0
for more details.
0
1
0
1
0
1
0
1
Table 12-5 on page
Description
Normal port operation, OC1A/OC1B disconnected.
WGM13=0: Normal port operation, OC1A/OC1B
disconnected.
WGM13=1: Toggle OC1A on Compare Match, OC1B
reserved.
Clear OC1A/OC1B on Compare Match, set
OC1A/OC1B at BOTTOM (non-inverting mode)
Set OC1A/OC1B on Compare Match, clear
OC1A/OC1B at BOTTOM (inverting mode)
Description
Normal port operation, OC1A/OC1B disconnected.
WGM13=0: Normal port operation, OC1A/OC1B
disconnected.
WGM13=1: Toggle OC1A on Compare Match, OC1B
reserved.
Clear OC1A/OC1B on Compare Match when up-
counting. Set OC1A/OC1B on Compare Match when
downcounting.
Set OC1A/OC1B on Compare Match when up-
counting. Clear OC1A/OC1B on Compare Match
when downcounting.
(1)
for more details.
109. Modes of operation supported by the
(“Modes of Operation” on page
8006G–AVR–01/08
“Fast PWM
98).
(1)