ATMEGA644PV-20AU Atmel, ATMEGA644PV-20AU Datasheet - Page 110
![IC MCU AVR 64K FLASH 44-TQFP](/photos/6/70/67042/313-44-tqfp_sml.jpg)
ATMEGA644PV-20AU
Manufacturer Part Number
ATMEGA644PV-20AU
Description
IC MCU AVR 64K FLASH 44-TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA644PV-20AU
Core Processor
AVR
Core Size
8-Bit
Speed
20MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
32
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)
1.8 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
44-TQFP, 44-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
- Current page: 110 of 439
- Download datasheet (10Mb)
ATmega164P/324P/644P
• Bit 2 – OCF0B: Timer/Counter 0 Output Compare B Match Flag
The OCF0B bit is set when a Compare Match occurs between the Timer/Counter and the data in
OCR0B – Output Compare Register0 B. OCF0B is cleared by hardware when executing the cor-
responding interrupt handling vector. Alternatively, OCF0B is cleared by writing a logic one to
the flag. When the I-bit in SREG, OCIE0B (Timer/Counter Compare B Match Interrupt Enable),
and OCF0B are set, the Timer/Counter Compare Match Interrupt is executed.
• Bit 1 – OCF0A: Timer/Counter 0 Output Compare A Match Flag
The OCF0A bit is set when a Compare Match occurs between the Timer/Counter0 and the data
in OCR0A – Output Compare Register0. OCF0A is cleared by hardware when executing the cor-
responding interrupt handling vector. Alternatively, OCF0A is cleared by writing a logic one to
the flag. When the I-bit in SREG, OCIE0A (Timer/Counter0 Compare Match Interrupt Enable),
and OCF0A are set, the Timer/Counter0 Compare Match Interrupt is executed.
• Bit 0 – TOV0: Timer/Counter0 Overflow Flag
The bit TOV0 is set when an overflow occurs in Timer/Counter0. TOV0 is cleared by hardware
when executing the corresponding interrupt handling vector. Alternatively, TOV0 is cleared by
writing a logic one to the flag. When the SREG I-bit, TOIE0 (Timer/Counter0 Overflow Interrupt
Enable), and TOV0 are set, the Timer/Counter0 Overflow interrupt is executed.
The setting of this flag is dependent of the WGM02:0 bit setting. Refer to
Table
12-8,
”Waveform
Generation Mode Bit Description” on page
106.
110
8011O–AVR–07/10
Related parts for ATMEGA644PV-20AU
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![ATmega644P](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
Manufacturer:
Atmel Corporation
Datasheet:
![ATmega644P Automotive](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
Manufacturer:
Atmel Corporation
Datasheet:
![ATMEGA644P-20AU](/photos/6/70/67042/313-44-tqfp_tmb.jpg)
Part Number:
Description:
IC MCU AVR 64K FLASH 44-TQFP
Manufacturer:
Atmel
Datasheet:
![ATMEGA644P-20MU](/photos/12/13/121316/313-44-qfn_tmb.jpg)
Part Number:
Description:
IC MCU AVR 64K FLASH 44-QFN
Manufacturer:
Atmel
Datasheet:
![ATMEGA644P-20AQ](/photos/6/70/67042/313-44-tqfp_tmb.jpg)
Part Number:
Description:
MCU AVR 64K FLASH 20MHZ 44-TQFP
Manufacturer:
Atmel
Datasheet:
![ATMEGA644P-A15MZ](/photos/12/13/121316/313-44-qfn_tmb.jpg)
Part Number:
Description:
MCU AVR 64KB FLASH 16MHZ 44QFN
Manufacturer:
Atmel
Datasheet:
![ATMEGA644P-20PU](/photos/6/70/67049/453-40-dip_tmb.jpg)
Part Number:
Description:
IC MCU AVR 64K FLASH 40-DIP
Manufacturer:
Atmel
Datasheet:
![ATMEGA644P-20AUR](/images/manufacturer_photos/0/0/78/atmel_tmb.jpg)
Part Number:
Description:
MCU AVR 64K FLASH 20MHZ 44TQFP
Manufacturer:
Atmel
Datasheet:
![ATMEGA644P-20MUR](/images/manufacturer_photos/0/0/78/atmel_tmb.jpg)
Part Number:
Description:
MCU AVR 64K FLASH 20MHZ 44QFN
Manufacturer:
Atmel
Datasheet:
![ATMEGA644P-20MQ](/photos/12/13/121316/313-44-qfn_tmb.jpg)
Part Number:
Description:
MCU AVR 64K FLASH 20MHZ 44-QFN
Manufacturer:
Atmel
Datasheet:
![ATMEGA644P-20PQ](/photos/6/70/67049/453-40-dip_tmb.jpg)
Part Number:
Description:
MCU AVR 64K FLASH 20MHZ 40-PDIP
Manufacturer:
Atmel
Datasheet: