ATmega1280R212 Atmel Corporation, ATmega1280R212 Datasheet - Page 129
ATmega1280R212
Manufacturer Part Number
ATmega1280R212
Description
Manufacturer
Atmel Corporation
Specifications of ATmega1280R212
Flash (kbytes)
128 Kbytes
Max. Operating Frequency
16 MHz
Max I/o Pins
86
Spi
5
Twi (i2c)
1
Uart
4
Adc Channels
16
Adc Resolution (bits)
10
Adc Speed (ksps)
15
Analog Comparators
1
Crypto Engine
AES
Sram (kbytes)
8
Eeprom (bytes)
4096
Operating Voltage (vcc)
1.8 to 3.6
Timers
6
Frequency Band
700/800/900MHz
Max Data Rate (mb/s)
1
Antenna Diversity
No
External Pa Control
Yes
Power Output (dbm)
10
Receiver Sensitivity (dbm)
-110
Receive Current Consumption (ma)
9.0
Transmit Current Consumption (ma)
18 at 5dBm
Link Budget (dbm)
120
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16.9
16.9.1
2549N–AVR–05/11
Register Description
TCCR0A – Timer/Counter Control Register A
• Bits 7:6 – COM0A1:0: Compare Match Output A Mode
These bits control the Output Compare pin (OC0A) behavior. If one or both of the COM0A1:0
bits are set, the OC0A 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 OC0A pin
must be set in order to enable the output driver.
When OC0A is connected to the pin, the function of the COM0A1:0 bits depends on the
WGM02:0 bit setting.
are set to a normal or CTC mode (non-PWM).
Table 16-2.
Table 16-3
mode.
Table 16-3.
Note:
Table 16-4 on page 130
to phase correct PWM mode.
Bit
0x24 (0x44)
Read/Write
Initial Value
COM0A1
COM0A1
0
0
1
1
0
0
1
1
1. A special case occurs when OCR0A equals TOP and COM0A1 is set. In this case, the Com-
pare Match is ignored, but the set or clear is done at BOTTOM. See
page 124
shows the COM0A1:0 bit functionality when the WGM01:0 bits are set to fast PWM
Compare Output Mode, non-PWM Mode
Compare Output Mode, Fast PWM Mode
COM0A1
R/W
COM0A0
COM0A0
7
0
for more details.
0
1
0
1
0
1
0
1
Table 16-2
COM0A0
shows the COM0A1:0 bit functionality when the WGM02:0 bits are set
R/W
6
0
ATmega640/1280/1281/2560/2561
shows the COM0A1:0 bit functionality when the WGM02:0 bits
COM0B1
R/W
5
0
WGM02 = 0: Normal Port Operation, OC0A Disconnected
Clear OC0A on Compare Match, set OC0A at BOTTOM
Set OC0A on Compare Match, clear OC0A at BOTTOM
WGM02 = 1: Toggle OC0A on Compare Match
Normal port operation, OC0A disconnected
Normal port operation, OC0A disconnected
COM0B0
R/W
4
0
Toggle OC0A on Compare Match
Clear OC0A on Compare Match
Set OC0A on Compare Match
(non-inverting mode)
R
3
–
0
(inverting mode)
(1)
Description
Description
R
2
–
0
WGM01
R/W
1
0
“Fast PWM Mode” on
WGM00
R/W
0
0
TCCR0A
129
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