Datasheet

 2018 Microchip Technology Inc. Data Sheet Complete DS40002072A-page 4
ATmega32A
9.9 Timer/Counter Oscillator.................................................................................. 37
9.10 Register Description ........................................................................................ 38
10 Power Management and Sleep Modes ................................................. 39
10.1 Sleep Modes.................................................................................................... 39
10.2 Idle Mode......................................................................................................... 39
10.3 ADC Noise Reduction Mode............................................................................ 40
10.4 Power-down Mode........................................................................................... 40
10.5 Power-save Mode............................................................................................ 40
10.6 Standby Mode ................................................................................................. 40
10.7 Extended Standby Mode ................................................................................. 41
10.8 Minimizing Power Consumption ...................................................................... 41
10.9 Register Description ........................................................................................ 43
11 System Control and Reset .................................................................... 44
11.1 Resetting the AVR ........................................................................................... 44
11.2 Reset Sources ................................................................................................. 44
11.3 Internal Voltage Reference.............................................................................. 47
11.4 Watchdog Timer .............................................................................................. 48
11.5 Register Description ........................................................................................ 49
12 Interrupts ................................................................................................ 51
12.1 Interrupt Vectors in ATmega32A ..................................................................... 51
12.2 Register Description ........................................................................................ 54
13 I/O Ports .................................................................................................. 56
13.1 Overview.......................................................................................................... 56
13.2 Ports as General Digital I/O............................................................................. 57
13.3 Alternate Port Functions .................................................................................. 61
13.4 Register Description ........................................................................................ 70
14 External Interrupts ................................................................................. 73
14.1 Register Description ........................................................................................ 73
15 8-bit Timer/Counter0 with PWM ............................................................ 76
15.1 Features .......................................................................................................... 76
15.2 Overview.......................................................................................................... 76
15.3 Timer/Counter Clock Sources ......................................................................... 77
15.4 Counter Unit .................................................................................................... 77
15.5 Output Compare Unit....................................................................................... 78