atmega32u4-16mu ATMEL Corporation, atmega32u4-16mu Datasheet - Page 131

• Manufacturer Part Number: atmega32u4-16mu
• Description: Atmega32u4 8-bit Avr Microcontroller With 32k Bytes Of Isp Flash And Usb Controller
• Manufacturer: ATMEL Corporation

Table 14-4.
Note:
14.10.3
14.10.4
7766A–AVR–03/08
Mode
10
12
13
14
15
11
0
1
2
3
4
5
6
7
8
9
1. The CTCn and PWMn1:0 bit definition names are obsolete. Use the
WGMn3
Timer/Counter1 Control Register B – TCCR1B
Timer/Counter3 Control Register B – TCCR3B
location of these bits are compatible with previous versions of the timer.
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
Waveform Generation Mode Bit Description
WGMn2
(CTCn)
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
• Bit 7 – ICNCn: Input Capture Noise Canceler
Setting this bit (to one) activates the Input Capture Noise Canceler. When the Noise Canceler is
activated, the input from the Input Capture Pin (ICPn) is filtered. The filter function requires four
successive equal valued samples of the ICPn pin for changing its output. The input capture is
therefore delayed by four Oscillator cycles when the noise canceler is enabled.
• Bit 6 – ICESn: Input Capture Edge Select
Bit
Read/Write
Initial Value
Bit
Read/Write
Initial Value
(PWMn1)
WGMn1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
7
ICNC1
R/W
0
7
ICNC3
R/W
0
(PWMn0)
WGMn0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
6
ICES1
R/W
0
6
ICES3
R/W
0
Timer/Counter Mode of
Operation
Normal
PWM, Phase Correct, 8-bit
PWM, Phase Correct, 9-bit
PWM, Phase Correct, 10-bit
CTC
Fast PWM, 8-bit
Fast PWM, 9-bit
Fast PWM, 10-bit
PWM, Phase and Frequency
Correct
PWM, Phase and Frequency
Correct
PWM, Phase Correct
PWM, Phase Correct
CTC
(Reserved)
Fast PWM
Fast PWM
5
–
R
0
5
–
R
0
(1)
4
WGM13
R/W
0
4
WGM33
R/W
0
WGM
3
R/W
0
3
WGM32
R/W
0
WGM12
n2:0 definitions. However, the functionality and
2
CS32
R/W
0
2
CS12
R/W
0
TOP
0xFFFF
0x00FF
0x01FF
0x03FF
OCRnA
0x00FF
0x01FF
0x03FF
ICRn
OCRnA
ICRn
OCRnA
ICRn
–
ICRn
OCRnA
1
CS31
R/W
0
1
CS11
R/W
0
ATmega32U4
Update of
OCRn
Immediate
TOP
TOP
TOP
Immediate
TOP
TOP
TOP
BOTTOM
BOTTOM
TOP
TOP
Immediate
–
TOP
TOP
0
CS30
R/W
0
0
CS10
R/W
0
x
at
TCCR3B
TCCR1B
TOVn Flag
Set on
MAX
BOTTOM
BOTTOM
BOTTOM
MAX
TOP
TOP
TOP
BOTTOM
BOTTOM
BOTTOM
BOTTOM
MAX
–
TOP
TOP
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