ATtiny261A datasheet(288/292 Pages) ATMEL

288 / 292 page

8197A–AVR–10/09

ATtiny261A/461A/861A

7.3

Power Reduction Register ...............................................................................36

7.4

Minimizing Power Consumption ......................................................................36

7.5

System Control and Reset .................................................................... 39

8.1

Resetting the AVR ...........................................................................................39

8.2

Reset Sources .................................................................................................40

8.3

Internal Voltage Reference ..............................................................................42

8.4

Watchdog Timer ..............................................................................................42

8.5

Interrupts ................................................................................................ 48

9.1

Interrupt Vectors ..............................................................................................48

9.2

External Interrupts ...........................................................................................49

9.3

10 I/O Ports .................................................................................................. 53

10.1

Ports as General Digital I/O .............................................................................54

10.2

Alternate Port Functions ..................................................................................58

10.3

11 Timer/Counter0 ...................................................................................... 69

11.1

Features ..........................................................................................................69

11.2

Overview ..........................................................................................................69

11.3

Clock Sources .................................................................................................70

11.4

Counter Unit ....................................................................................................72

11.5

Input Capture Unit ...........................................................................................73

11.6

Output Compare Unit .......................................................................................74

11.7

Modes of Operation .........................................................................................75

11.8

Timer/Counter Timing Diagrams .....................................................................77

11.9

Accessing Registers in 16-bit Mode ................................................................78

11.10 Register Description ........................................................................................82

12 Timer/Counter1 ...................................................................................... 87

12.1

Features ..........................................................................................................87

12.2

Overview ..........................................................................................................87

12.3

Clock Sources .................................................................................................90

12.4

Counter Unit ....................................................................................................91

12.5

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

ATtiny261A Datasheet(PDF) 288 Page - ATMEL Corporation

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