ATmega325P datasheet(359/364 Pages) ATMEL

359 / 364 page

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8023F–AVR–07/09

ATmega325P/3250P

13.2Ports as General Digital I/O ...................................................................................64

13.3Alternate Port Functions ........................................................................................69

13.4Register Description ..............................................................................................85

8-bit Timer/Counter0 with PWM ............................................................ 89

14.1Features ................................................................................................................89

14.2Overview ...............................................................................................................89

14.3Timer/Counter Clock Sources ...............................................................................90

14.4Counter Unit ..........................................................................................................90

14.5Output Compare Unit ............................................................................................92

14.6Compare Match Output Unit ..................................................................................93

14.7Modes of Operation ...............................................................................................94

14.8Timer/Counter Timing Diagrams ...........................................................................99

14.9Timer/Counter0 and Timer/Counter1 Prescalers .................................................100

14.10Register Description ..........................................................................................102

16-bit Timer/Counter1 .......................................................................... 107

15.1Features ..............................................................................................................107

15.2Overview .............................................................................................................107

15.3Accessing 16-bit Registers ..................................................................................110

15.4Timer/Counter Clock Sources .............................................................................112

15.5Counter Unit ........................................................................................................113

15.6Input Capture Unit ...............................................................................................114

15.7Output Compare Units .........................................................................................116

15.8Compare Match Output Unit ................................................................................117

15.9Modes of Operation .............................................................................................119

15.10Timer/Counter Timing Diagrams .......................................................................126

15.11Register Description ..........................................................................................128

8-bit Timer/Counter2 with PWM and Asynchronous Operation ...... 135

16.1Features ..............................................................................................................135

16.2Overview .............................................................................................................135

16.3Timer/Counter Clock Sources .............................................................................136

16.4Counter Unit ........................................................................................................137

16.5Output Compare Unit ..........................................................................................137

16.6Compare Match Output Unit ................................................................................139

16.7Modes of Operation .............................................................................................140

16.8Timer/Counter Timing Diagrams .........................................................................145

ATmega325P Datasheet(PDF) 359 Page - ATMEL Corporation