ATmega1284P datasheet(375/380 Pages) ATMEL

375 / 380 page

iii

8059D–AVR–11/09

ATmega1284P

13.3Timer/Counter Clock Sources ...............................................................................93

13.4Counter Unit ..........................................................................................................93

13.5Output Compare Unit ............................................................................................94

13.6Compare Match Output Unit ..................................................................................96

13.7Modes of Operation ...............................................................................................97

13.8Timer/Counter Timing Diagrams .........................................................................101

13.9Register Description ............................................................................................103

16-bit Timer/Counter1 and Timer/Counter3 with PWM ..................... 110

14.1Features ..............................................................................................................110

14.2Overview .............................................................................................................110

14.3Accessing 16-bit Registers ..................................................................................112

14.4Timer/Counter Clock Sources .............................................................................115

14.5Counter Unit ........................................................................................................116

14.6Input Capture Unit ...............................................................................................117

14.7Output Compare Units .........................................................................................119

14.8Compare Match Output Unit ................................................................................121

14.9Modes of Operation .............................................................................................122

14.10Timer/Counter Timing Diagrams .......................................................................129

14.11Register Description ..........................................................................................131

8-bit Timer/Counter2 with PWM and Asynchronous Operation ...... 140

15.1Features ..............................................................................................................140

15.2Overview .............................................................................................................140

15.3Timer/Counter Clock Sources .............................................................................141

15.4Counter Unit ........................................................................................................142

15.5Output Compare Unit ..........................................................................................142

15.6Compare Match Output Unit ................................................................................144

15.7Modes of Operation .............................................................................................145

15.8Timer/Counter Timing Diagrams .........................................................................149

15.9Asynchronous Operation of Timer/Counter2 .......................................................151

15.10Timer/Counter Prescaler ...................................................................................153

15.11Register Description ..........................................................................................153

SPI – Serial Peripheral Interface ......................................................... 161

16.1Features ..............................................................................................................161

16.2Overview .............................................................................................................161

16.3SS Pin Functionality ............................................................................................166

ATmega1284P Datasheet(PDF) 375 Page - ATMEL Corporation