ATMEGA644PV ATMEL [ATMEL Corporation], ATMEGA644PV Datasheet - Page 402

• Manufacturer Part Number: ATMEGA644PV
• Description: 8-bit Microcontroller with 16/32/64K Bytes In-System Programmable Flash
• Manufacturer: ATMEL [ATMEL Corporation]

ii
ATmega164P/324P/644P
8
9
10 Interrupts ................................................................................................ 61
11 External Interrupts ................................................................................. 66
12 I/O-Ports .................................................................................................. 71
13 8-bit Timer/Counter0 with PWM ............................................................ 92
Power Management and Sleep Modes ................................................. 42
System Control and Reset .................................................................... 50
7.9 Timer/Counter Oscillator ........................................................................................38
7.10 Clock Output Buffer ..............................................................................................38
7.11 System Clock Prescaler .......................................................................................38
7.12 Register Description .............................................................................................40
8.1 Overview ................................................................................................................42
8.2 Sleep Modes ..........................................................................................................42
8.3 BOD Disable ...........................................................................................................43
8.4 Idle Mode ................................................................................................................43
8.5 ADC Noise Reduction Mode ..................................................................................43
8.6 Power-down Mode .................................................................................................44
8.7 Power-save Mode ..................................................................................................44
8.8 Standby Mode ........................................................................................................44
8.9 Extended Standby Mode ........................................................................................44
8.10 Power Reduction Register ....................................................................................45
8.11 Minimizing Power Consumption ...........................................................................45
8.12 Register Description .............................................................................................47
9.1 Internal Voltage Reference .....................................................................................54
9.2 Watchdog Timer .....................................................................................................55
9.3 Register Description ...............................................................................................58
10.1 Overview ..............................................................................................................61
10.2 Interrupt Vectors in ATmega164P/324P/644P .....................................................61
10.3 Register Description .............................................................................................64
11.1 Overview ..............................................................................................................66
11.2 Register Description .............................................................................................66
12.1 Overview ..............................................................................................................71
12.2 Ports as General Digital I/O ..................................................................................72
12.3 Alternate Port Functions .......................................................................................77
12.4 Register Description .............................................................................................90
8011D–AVR–02/07