ATtiny48 datasheet(261/266 Pages) ATMEL

261 / 266 page

iii

8008C–AVR–03/09

ATtiny48/88

12.2

Overview ..........................................................................................................84

12.3

Accessing 16-bit Registers ..............................................................................86

12.4

Timer/Counter Clock Sources .........................................................................88

12.5

Counter Unit ....................................................................................................89

12.6

Input Capture Unit ...........................................................................................90

12.7

Output Compare Units .....................................................................................92

12.8

Compare Match Output Unit ............................................................................94

12.9

Modes of Operation .........................................................................................95

12.10

Timer/Counter Timing Diagrams ...................................................................102

12.11

Timer/Counter0 and Timer/Counter1 Prescalers .............................. 112

13.1

Internal Clock Source ....................................................................................112

13.2

Prescaler Reset .............................................................................................112

13.3

External Clock Source ...................................................................................112

13.4

Serial Peripheral Interface – SPI ......................................................... 115

14.1

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

14.2

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

14.3

SS Pin Functionality ......................................................................................119

14.4

Data Modes ...................................................................................................120

14.5

2-Wire Serial Interface ......................................................................... 124

15.1

Features ........................................................................................................124

15.2

2-wire Serial Interface Bus Definition ............................................................124

15.3

Data Transfer and Frame Format ..................................................................125

15.4

Multi-master Bus Systems, Arbitration and Synchronization .........................128

15.5

Overview of the TWI Module .........................................................................130

15.6

Using the TWI ................................................................................................132

15.7

Transmission Modes .....................................................................................135

15.8

Multi-master Systems and Arbitration ............................................................149

15.9

Analog Comparator ............................................................................. 155

16.1

Analog Comparator Multiplexed Input ...........................................................155

16.2

ATtiny48 Datasheet(PDF) 261 Page - ATMEL Corporation

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