atmega3250v-8auatmega325v-8ai ATMEL Corporation, atmega3250v-8auatmega325v-8ai Datasheet - Page 143
![no-image](/images/manufacturer_photos/0/0/79/atmel_corporation_sml.jpg)
atmega3250v-8auatmega325v-8ai
Manufacturer Part Number
atmega3250v-8auatmega325v-8ai
Description
Atmega3250 8-bit Microcontroller With In-system Programmable Flash
Manufacturer
ATMEL Corporation
Datasheet
1.ATMEGA3250V-8AUATMEGA325V-8AI.pdf
(362 pages)
- Current page: 143 of 362
- Download datasheet (7Mb)
2570L–AVR–08/07
• Bit 5:4 – COM2A1:0: Compare Match Output Mode A
These bits control the Output Compare pin (OC2A) behavior. If one or both of the COM2A1:0
bits are set, the OC2A 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 OC2A pin must be
set in order to enable the output driver.
When OC2A is connected to the pin, the function of the COM2A1:0 bits depends on the
WGM21:0 bit setting.
are set to a normal or CTC mode (non-PWM).
Table 18-3.
Table 18-4
mode.
Table 18-4.
Note:
Table 18-5
rect PWM mode.
Table 18-5.
Note:
COM2A1
COM2A1
COM2A1
0
0
1
1
0
0
1
1
0
0
1
1
1. A special case occurs when OCR2A equals TOP and COM2A1 is set. In this case, the com-
1. A special case occurs when OCR2A equals TOP and COM2A1 is set. In this case, the com-
pare match is ignored, but the set or clear is done at BOTTOM. See
page 135
pare match is ignored, but the set or clear is done at TOP. See
page 137
shows the COM2A1:0 bit functionality when the WGM21:0 bits are set to fast PWM
shows the COM21:0 bit functionality when the WGM21:0 bits are set to phase cor-
Compare Output Mode, non-PWM Mode
Compare Output Mode, Fast PWM Mode
Compare Output Mode, Phase Correct PWM Mode
COM2A0
COM2A0
COM2A0
0
1
0
1
0
1
0
1
0
1
0
1
for more details.
for more details.
Table 18-3
Description
Normal port operation, OC2A disconnected.
Reserved
Clear OC2A on compare match, set OC2A at BOTTOM,
(non-inverting mode).
Set OC2A on compare match, clear OC2A at BOTTOM,
(inverting mode).
Description
Normal port operation, OC2A disconnected.
Reserved
Clear OC2A on compare match when up-counting. Set OC2A on
compare match when counting down.
Set OC2A on compare match when up-counting. Clear OC2A on
compare match when counting down.
Description
Normal port operation, OC2A disconnected.
Toggle OC2A on compare match.
Clear OC2A on compare match.
Set OC2A on compare match.
shows the COM2A1:0 bit functionality when the WGM21:0 bits
ATmega325/3250/645/6450
(1)
(1)
“Phase Correct PWM Mode” on
“Fast PWM Mode” on
143
Related parts for atmega3250v-8auatmega325v-8ai
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![ATMEGA3250V-8AU](/photos/6/70/67048/313-100-tqfp_tmb.jpg)
Part Number:
Description:
IC AVR MCU 32K 8MHZ 100TQFP
Manufacturer:
Atmel
Datasheet:
![ATMEGA3250V-8AI](/photos/6/70/67048/313-100-tqfp_tmb.jpg)
Part Number:
Description:
IC AVR MCU 32K 8MHZ 100TQFP
Manufacturer:
Atmel
Datasheet:
![ATMEGA3250V-8AUR](/images/manufacturer_photos/0/0/78/atmel_tmb.jpg)
Part Number:
Description:
MCU AVR 32K FLASH 8MHZ 100TQFP
Manufacturer:
Atmel
Datasheet:
![U641B](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
INTERVAL AND WIPE/WASH WIPER CONTROL IC WITH DELAY
Manufacturer:
ATMEL Corporation
Datasheet:
![U4082B](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
Low-Voltage Voice-Switched IC for Hands-Free Operation
Manufacturer:
ATMEL Corporation
Datasheet:
![U4089B](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
MONOLITHIC INTEGRATED FEATUREPHONE CIRCUIT
Manufacturer:
ATMEL Corporation
Datasheet:
![U4255BM-M](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
AM-FM Receiver IC U4255BM-M
Manufacturer:
ATMEL Corporation
Datasheet:
![U4089B-P](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
Monolithic Integrated Feature Phone Circuit
Manufacturer:
ATMEL Corporation
Datasheet:
![TDA4470](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
Multistandard Video-IF and Quasi Parallel Sound Processing
Manufacturer:
ATMEL Corporation
Datasheet:
![ATF22V10B-25PC](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
High-performance EE PLD
Manufacturer:
ATMEL Corporation
Datasheet:
![AT89C51ED2-IM](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
8-bit Flash Microcontroller
Manufacturer:
ATMEL Corporation
Datasheet:
![AT24C01](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
2-Wire Serial EEPROM
Manufacturer:
ATMEL Corporation
Datasheet: