Datasheet

ii
8183F–AVR–06/12
ATtiny24A/44A/84A
7.1 Sleep Modes ....................................................................................................33
7.2 Software BOD Disable .....................................................................................34
7.3 Power Reduction Register ...............................................................................35
7.4 Minimizing Power Consumption ......................................................................35
7.5 Register Description ........................................................................................36
8 System Control and Reset .................................................................... 38
8.1 Resetting the AVR ...........................................................................................38
8.2 Reset Sources .................................................................................................39
8.3 Internal Voltage Reference ..............................................................................41
8.4 Watchdog Timer ..............................................................................................41
8.5 Register Description ........................................................................................44
9 Interrupts ................................................................................................ 47
9.1 Interrupt Vectors ..............................................................................................47
9.2 External Interrupts ...........................................................................................48
9.3 Register Description ........................................................................................50
10 I/O Ports .................................................................................................. 53
10.1 Ports as General Digital I/O .............................................................................54
10.2 Alternate Port Functions ..................................................................................58
10.3 Register Description ........................................................................................66
11 8-bit Timer/Counter0 with PWM ............................................................ 68
11.1 Features ..........................................................................................................68
11.2 Overview ..........................................................................................................68
11.3 Clock Sources .................................................................................................69
11.4 Counter Unit ....................................................................................................69
11.5 Output Compare Unit .......................................................................................70
11.6 Compare Match Output Unit ............................................................................72
11.7 Modes of Operation .........................................................................................73
11.8 Timer/Counter Timing Diagrams .....................................................................77
11.9 Register Description ........................................................................................79
12 16-bit Timer/Counter1 ............................................................................ 85
12.1 Features ..........................................................................................................85
12.2 Overview ..........................................................................................................85
12.3 Timer/Counter Clock Sources .........................................................................87
12.4 Counter Unit ....................................................................................................87