ATMEGA32(2008) Ver la hoja de datos (PDF) - Atmel Corporation

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ATMEGA32
(Rev.:2008)

8-bit Microcontroller with 32K Bytes In-System Programmable Flash

Atmel Corporation 

Overview 114

Timer/Counter Clock Sources 115

Counter Unit 115

Output Compare Unit 116

Compare Match Output Unit 117

Modes of Operation 118

Timer/Counter Timing Diagrams 123

8-bit Timer/Counter Register Description 125

Asynchronous Operation of the Timer/Counter 128

Timer/Counter Prescaler 131

Serial Peripheral Interface – SPI 132

SS Pin Functionality 136

Data Modes 139

USART 140

Overview 140

Clock Generation 141

Frame Formats 144

USART Initialization 146

Data Transmission – The USART Transmitter 147

Data Reception – The USART Receiver 150

Asynchronous Data Reception 153

Multi-processor Communication Mode 157

Accessing UBRRH/ UCSRC Registers 158

USART Register Description 159

Examples of Baud Rate Setting 165

Two-wire Serial Interface 169

Features 169

Two-wire Serial Interface Bus Definition 169

Data Transfer and Frame Format 170

Multi-master Bus Systems, Arbitration and Synchronization 172

Overview of the TWI Module 175

TWI Register Description 177

Using the TWI 180

Transmission Modes 183

Multi-master Systems and Arbitration 196

Analog Comparator 198

Analog Comparator Multiplexed Input 200

Analog to Digital Converter 201

Features 201

Operation 202

Starting a Conversion 203

2503N–AVR–06/08

ATmega32(L)

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