ATtiny43U datasheet(179/182 Pages) ATMEL

179 / 182 page

iii

8048B–AVR–03/09

11.4

8-bit Timer/Counter with PWM (Timer/Counter0 and Timer/Counter1) .

12.1

Features ..........................................................................................................79

12.2

Overview ..........................................................................................................79

12.3

Timer/Counter Clock Sources .........................................................................80

12.4

Counter Unit ....................................................................................................80

12.5

Output Compare Unit .......................................................................................81

12.6

Compare Match Output Unit ............................................................................83

12.7

Modes of Operation .........................................................................................84

12.8

Timer/Counter Timing Diagrams .....................................................................88

12.9

Timer/Counter Prescaler ....................................................................... 98

13.1

Prescaler Reset ...............................................................................................98

13.2

External Clock Source .....................................................................................98

13.3

USI – Universal Serial Interface .......................................................... 100

14.1

Features ........................................................................................................100

14.2

Overview ........................................................................................................100

14.3

Functional Descriptions .................................................................................101

14.4

Alternative USI Usage ...................................................................................107

14.5

Analog Comparator ............................................................................. 112

15.1

Analog Comparator Multiplexed Input ...........................................................112

15.2

Analog to Digital Converter ................................................................ 115

16.1

Features ........................................................................................................115

16.2

Overview ........................................................................................................115

16.3

ADC Operation ..............................................................................................116

16.4

Starting a Conversion ....................................................................................116

16.5

Prescaling and Conversion Timing ................................................................117

16.6

Changing Channel or Reference Selection ...................................................120

16.7

ADC Noise Canceler .....................................................................................121

16.8

Analog Input Circuitry ....................................................................................122

16.9

Analog Noise Canceling Techniques .............................................................122

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