ATMEga64L ATMEL Corporation, ATMEga64L Datasheet - Page 132

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

132
ATmega64(L)
Table 58. Compare Output Mode, non-PWM
Table 59 shows the COMnx1:0 bit functionality when the WGMn3:0 bits are set to the
fast PWM mode
Table 59. Compare Output Mode, Fast PWM
Note:
Table 59 shows the COMnx1:0 bit functionality when the WGMn3:0 bits are set to the
phase correct and frequency correct PWM mode.
COMnA1/
COMnB1/
COMnA1/
COMnB1/
COMnC1
COMnC0
0
0
1
1
0
0
1
1
1. A
COMnA1/COMnB1/COMnC1 is set. In this case the Compare Match is ignored, but
the set or clear is done at TOP. See “Fast PWM Mode” on page 123. for more details.
special
COMnA0/
COMnB0/
COMnA0/
COMnB0/
COMnC0
COMnC0
0
1
0
1
0
1
0
1
case
Description
Normal port operation, OCnA/OCnB/OCnC disconnected.
Toggle OCnA/OCnB/OCnC on Compare Match.
Clear OCnA/OCnB/OCnC on Compare Match (Set output to
low level).
Set OCnA/OCnB/OCnC on Compare Match (Set output to high
level).
Description
Normal port operation, OCnA/OCnB/OCnC disconnected.
WGMn3:0 = 15: Toggle OCnA on Compare Match,
OCnB/OCnC disconnected (normal port operation).
For all other WGMn settings, normal port operation,
OCnA/OCnB/OCnC disconnected.
Clear OCnA/OCnB/OCnC on Compare Match, set
OCnA/OCnB/OCnC at TOP.
Set OCnA/OCnB/OCnC on Compare Match, clear
OCnA/OCnB/OCnC at TOP.
occurs
when
OCRnA/OCRnB/OCRnC
(1)
equals
2490G–AVR–03/04
TOP
and