Datasheet

ii
8246A–AVR–11/09
ATtiny2313A/4313
7.1 Sleep Modes ....................................................................................................33
7.2 Software BOD Disable .....................................................................................34
7.3 Power Reduction Register ...............................................................................34
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 .................................................................................................. 54
10.1 Ports as General Digital I/O .............................................................................55
10.2 Alternate Port Functions ..................................................................................59
10.3 Register Description ........................................................................................68
11 8-bit Timer/Counter0 with PWM ............................................................ 70
11.1 Features ..........................................................................................................70
11.2 Overview ..........................................................................................................70
11.3 Clock Sources .................................................................................................71
11.4 Counter Unit ....................................................................................................71
11.5 Output Compare Unit .......................................................................................72
11.6 Compare Match Output Unit ............................................................................74
11.7 Modes of Operation .........................................................................................75
11.8 Timer/Counter Timing Diagrams .....................................................................79
11.9 Register Description ........................................................................................81
12 16-bit Timer/Counter1 ............................................................................ 88
12.1 Features ..........................................................................................................88
12.2 Overview ..........................................................................................................88
12.3 Timer/Counter Clock Sources .........................................................................90
12.4 Counter Unit ....................................................................................................90