ATMEga64L ATMEL Corporation, ATMEga64L Datasheet - Page 133

• Manufacturer Part Number: ATMEga64L
• Description: 8-bit AVR Microcontroller with 64K Bytes In-System Programmable Flash
• Manufacturer: ATMEL Corporation

2490G–AVR–03/04
Table 60. Compare Output Mode, Phase Correct and Phase and Frequency Correct
PWM
Note:
• Bit 1:0 – WGMn1:0: Waveform Generation Mode
Combined with the WGMn3:2 bits found in the TCCRnB Register, these bits control the
counting sequence of the counter, the source for maximum (TOP) counter value, and
what type of waveform generation to be used, see Table 61. Modes of operation sup-
ported by the Timer/Counter unit are: Normal mode (counter), Clear Timer on Compare
match (CTC) mode, and three types of Pulse Width Modulation (PWM) modes. (See
“Modes of Operation” on page 122.)
COMnA1/
COMnB1/
COMnC1
(1)
0
0
1
1
1. A
COMnA1/COMnB1/COMnC1 is set. See “Phase Correct PWM Mode” on page 125.
for more details.
special
COMnA0/
COMnB0/
COMnC0
0
1
0
1
case
Description
Normal port operation, OCnA/OCnB/OCnC disconnected.
WGMn3:0 = 9 or 14: Toggle OCnA on Compare Match,
OCnB/OCnC disconnected (normal port operation).
Forr all other WGMn settings, normal port operation,
OCnA/OCnB/OCnC disconnected.
Clear OCnA/OCnB/OCnC on Compare Match when up-
counting. Set OCnA/OCnB/OCnC on Compare Match when
downcounting.
Set OCnA/OCnB/OCnC on Compare Match when up-counting.
Clear OCnA/OCnB/OCnC on Compare Match when
downcounting.
occurs
when
OCRnA/OCRnB/OC
ATmega64(L)
Rn
C
equals
TOP
133
and