ATMEGA165P_14 Datasheet, PDF (358/364 Pages) ATMEL Corporation – High Performance, Low Power Atmel

7.9 Clock Output Buffer ................................................................................................33
7.10 System Clock Prescaler .......................................................................................33
7.11 Register Description .............................................................................................34
8 Power Management and Sleep Modes ................................................. 36
8.1 Sleep Modes ..........................................................................................................36
8.2 Idle Mode ................................................................................................................37
8.3 ADC Noise Reduction Mode ..................................................................................37
8.4 Power-down Mode .................................................................................................37
8.5 Power-save Mode ..................................................................................................38
8.6 Standby Mode ........................................................................................................38
8.7 Power Reduction Register ......................................................................................38
8.8 Minimizing Power Consumption .............................................................................39
8.9 Register Description ...............................................................................................41
9 System Control and Reset .................................................................... 43
9.1 Resetting the AVR ..................................................................................................43
9.2 Reset Sources ........................................................................................................43
9.3 Internal Voltage Reference .....................................................................................47
9.4 Watchdog Timer .....................................................................................................47
9.5 Register Description ...............................................................................................50
10 Interrupts ................................................................................................ 52
10.1 Interrupt Vectors in ATmega165P ........................................................................52
10.2 Moving Interrupts Between Application and Boot Space .....................................55
10.3 Register Description .............................................................................................56
11 External Interrupts ................................................................................. 57
11.1 Pin Change Interrupt Timing ................................................................................57
11.2 Register Description .............................................................................................58
12 I/O-Ports .................................................................................................. 61
12.1 Overiew ................................................................................................................61
12.2 Ports as General Digital I/O ..................................................................................62
12.3 Alternate Port Functions .......................................................................................67
12.4 Register Description .............................................................................................79
13 8-bit Timer/Counter0 with PWM ............................................................ 82
13.1 Features ...............................................................................................................82
13.2 Overview ..............................................................................................................82
ii ATmega165P
8019K–AVR–11/10