Datasheet

221
7701F–AVR–10/12
Atmel ATtiny24/44/84 [Preliminary]
13 8-bit Timer/Counter0 with PWM ......................................................... 72
13.1 Features .......................................................................................................72
13.2 Overview ......................................................................................................72
13.3 Timer/Counter Clock Sources ......................................................................73
13.4 Counter Unit .................................................................................................73
13.5 Output Compare Unit ...................................................................................74
13.6 Compare Match Output Unit ........................................................................76
13.7 Modes of Operation ......................................................................................77
13.8 Timer/Counter Timing Diagrams ..................................................................82
13.9 Register Description .....................................................................................84
14 16-bit Timer/Counter1 ......................................................................... 91
14.1 Features .......................................................................................................91
14.2 Overview ......................................................................................................91
14.3 Accessing 16-bit Registers ...........................................................................94
14.4 Timer/Counter Clock Sources ......................................................................96
14.5 Counter Unit .................................................................................................97
14.6 Input Capture Unit ........................................................................................98
14.7 Output Compare Units ...............................................................................100
14.8 Compare Match Output Unit ......................................................................102
14.9 Modes of Operation ....................................................................................103
14.10 Timer/Counter Timing Diagrams ................................................................110
14.11 Register Description ...................................................................................113
15 Timer/Counter Prescaler ................................................................... 120
15.1 Prescaler Reset ..........................................................................................120
15.2 External Clock Source ................................................................................120
15.3 Register Description ...................................................................................121
16 USI – Universal Serial Interface ....................................................... 122
16.1 Features .....................................................................................................122
16.2 Overview ....................................................................................................122
16.3 Functional Descriptions ..............................................................................123
16.4 Alternative USI Usage ................................................................................129
16.5 Register Descriptions .................................................................................130
17 Analog Comparator ........................................................................... 134
17.1 Analog Comparator Multiplexed Input ........................................................134
17.2 Register Description ...................................................................................135