
iii
8209A–AVR–08/09
ATmega16M1/32M1/64M1
15 8-bit Timer/Counter0 with PWM ............................................................ 86
15.1 Features ..........................................................................................................86
15.2 Overview ..........................................................................................................86
15.3 Timer/Counter Clock Sources .........................................................................87
15.4 Counter Unit ....................................................................................................87
15.5 Output Compare Unit .......................................................................................88
15.6 Compare Match Output Unit ............................................................................90
15.7 Modes of Operation .........................................................................................91
15.8 Timer/Counter Timing Diagrams .....................................................................95
15.9 Register Description ........................................................................................97
16 16-bit Timer/Counter1 with PWM ........................................................ 103
16.1 Features ........................................................................................................103
16.2 Overview ........................................................................................................103
16.3 Accessing 16-bit Registers ............................................................................105
16.4 Timer/Counter Clock Sources .......................................................................108
16.5 Counter Unit ..................................................................................................109
16.6 Input Capture Unit .........................................................................................110
16.7 Output Compare Units ...................................................................................112
16.8 Compare Match Output Unit ..........................................................................114
16.9 Modes of Operation .......................................................................................115
16.10 Timer/Counter Timing Diagrams ...................................................................122
16.11 Register Description ......................................................................................124
17 Timer/Counter0 and Timer/Counter1 Prescalers .............................. 131
17.1 Internal Clock Source ....................................................................................131
17.2 Prescaler Reset .............................................................................................131
17.3 External Clock Source ...................................................................................131
17.4 Register Description ......................................................................................133
18 PSC – Power Stage Controller ............................................................ 134
18.1 Features ........................................................................................................134
18.2 Overview ........................................................................................................134
18.3 Accessing 16-bit Registers ............................................................................134
18.4 PSC Description ............................................................................................135
18.5 Functional Description ...................................................................................136
18.6 Update of Values ...........................................................................................140
18.7 Overlap Protection .........................................................................................141
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