Datasheet

339
7810C–AVR–10/12
Atmel ATmega328P [Preliminary]
13 I/O-Ports .................................................................................................. 66
13.1 Overview ..........................................................................................................66
13.2 Ports as General Digital I/O .............................................................................67
13.3 Alternate Port Functions ..................................................................................71
13.4 Register Description ........................................................................................84
14 8-bit Timer/Counter0 with PWM ............................................................ 86
14.1 Features ..........................................................................................................86
14.2 Overview ..........................................................................................................86
14.3 Timer/Counter Clock Sources .........................................................................87
14.4 Counter Unit ....................................................................................................87
14.5 Output Compare Unit .......................................................................................88
14.6 Compare Match Output Unit ............................................................................90
14.7 Modes of Operation .........................................................................................91
14.8 Timer/Counter Timing Diagrams .....................................................................95
14.9 Register Description ........................................................................................97
15 16-bit Timer/Counter1 with PWM ........................................................ 104
15.1 Features ........................................................................................................104
15.2 Overview ........................................................................................................104
15.3 Accessing 16-bit Registers ............................................................................106
15.4 Timer/Counter Clock Sources .......................................................................109
15.5 Counter Unit ..................................................................................................110
15.6 Input Capture Unit .........................................................................................111
15.7 Output Compare Units ...................................................................................113
15.8 Compare Match Output Unit ..........................................................................115
15.9 Modes of Operation .......................................................................................116
15.10 Timer/Counter Timing Diagrams ...................................................................124
15.11 Register Description ......................................................................................126
16 Timer/Counter0 and Timer/Counter1 Prescalers .............................. 133
16.1 Internal Clock Source ....................................................................................133
16.2 Prescaler Reset .............................................................................................133
16.3 External Clock Source ...................................................................................133
16.4 Register Description ......................................................................................135
17 8-bit Timer/Counter2 with PWM and Asynchronous Operation ...... 136
17.1 Features ........................................................................................................136
17.2 Overview ........................................................................................................136