ATmega3290P datasheet(379/385 Pages) ATMEL

379 / 385 page

8021E–AVR–07/09

ATmega329P/3290P

8.6 Calibrated Internal RC Oscillator ............................................................................31

8.7 External Clock ........................................................................................................32

8.8 Clock Output Buffer ................................................................................................33

8.9 Timer/Counter Oscillator ........................................................................................33

8.10 System Clock Prescaler .......................................................................................33

8.11 Register Description .............................................................................................34

Power Management and Sleep Modes ................................................. 36

9.1 Sleep Modes ..........................................................................................................36

9.2 BOD Disable ...........................................................................................................37

9.3 Idle Mode ................................................................................................................37

9.4 ADC Noise Reduction Mode ..................................................................................37

9.5 Power-down Mode .................................................................................................37

9.6 Power-save Mode ..................................................................................................38

9.7 Standby Mode ........................................................................................................38

9.8 Power Reduction Register ......................................................................................38

9.9 Minimizing Power Consumption .............................................................................39

9.10 Register Description .............................................................................................41

System Control and Reset .................................................................... 43

10.1 Resetting the AVR ................................................................................................43

10.2 Reset Sources ......................................................................................................43

10.3 Internal Voltage Reference ...................................................................................47

10.4 Watchdog Timer ...................................................................................................47

10.5 Register Description .............................................................................................49

Interrupts ................................................................................................ 52

11.1 Overview ..............................................................................................................52

11.2 Interrupt Vectors ...................................................................................................52

11.3 Register Description .............................................................................................55

External Interrupts ................................................................................. 57

12.1 Overview ..............................................................................................................57

12.2 Pin Change Interrupt Timing ................................................................................58

12.3 Register Description .............................................................................................58

I/O-Ports .................................................................................................. 62

13.1 Overview ..............................................................................................................62

13.2 Ports as General Digital I/O ..................................................................................63

ATmega3290P Datasheet(PDF) 379 Page - ATMEL Corporation