ATMEGA64-16AJ Atmel, ATMEGA64-16AJ Datasheet - Page 158
![IC MCU AVR 64K 5V 16MHZ 64-TQFP](/photos/12/13/121332/313-64-tqfp_sml.jpg)
ATMEGA64-16AJ
Manufacturer Part Number
ATMEGA64-16AJ
Description
IC MCU AVR 64K 5V 16MHZ 64-TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA64-16AJ
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
53
Program Memory Size
64KB (32K x 16)
Program Memory Type
FLASH
Eeprom Size
2K x 8
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-TQFP, 64-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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2490Q–AVR–06/10
Table 64. Waveform Generation Mode Bit Description
Note:
• Bit 5:4 – COM21:0: Compare Match Output Mode
These bits control the Output Compare pin (OC2) behavior. If one or both of the COM21:0 bits
are set, the OC2 output overrides the normal port functionality of the I/O pin it is connected to.
However, note that the Data Direction Register (DDR) bit corresponding to the OC2 pin must be
set in order to enable the output driver.
When OC2 is connected to the pin, the function of the COM21:0 bits depends on the WGM21:0
bit setting.
Normal or CTC mode (non-PWM).
Table 65. Compare Output Mode, non-PWM Mode
Table 66
mode.
Table 66. Compare Output Mode, Fast PWM Mode
Note:
Table 67
PWM mode.
Mode
0
1
2
3
COM21
COM21
0
0
1
1
0
0
1
1
1. The CTC2 and PWM2 bit definition names are now obsolete. Use the WGM21:0 definitions.
1. A special case occurs when OCR2 equals TOP and COM21 is set. In this case, the Compare
shows the COM21:0 bit functionality when the WGM21:0 bits are set to phase correct
WGM21
shows the COM21:0 bit functionality when the WGM21:0 bits are set to fast PWM
(CTC2)
Table 65
However, the functionality and location of these bits are compatible with previous versions of
the timer.
Match is ignored, but the set or clear is done at BOTTOM. See
for more details.
0
0
1
1
COM20
COM20
WGM20
(PWM2)
0
1
0
1
0
1
0
1
shows the COM21:0 bit functionality when the WGM21:0 bits are set to a
0
1
0
1
Description
Normal port operation, OC2 disconnected.
Toggle OC2 on Compare Match.
Clear OC2 on Compare Match.
Set OC2 on Compare Match.
Description
Normal port operation, OC2 disconnected.
Reserved
Clear OC2 on Compare Match, set OC2 at BOTTOM,
(non-inverting mode).
Set OC2 on Compare Match, clear OC2 at BOTTOM,
(inverting mode).
Timer/Counter Mode
of Operation
Normal
PWM, Phase Correct
CTC
Fast PWM
(1)
TOP
0xFF
0xFF
OCR2
0xFF
(1)
Update of
OCR2
TOP
Immediate
Immediate
BOTTOM
“Fast PWM Mode” on page 152
ATmega64(L)
TOV2 Flag
Set on
MAX
BOTTOM
MAX
MAX
158
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