ATMEGA329 データシートの表示（PDF） - Atmel Corporation
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ATMEGA329 Datasheet PDF : 392 Pages
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18.9 Asynchronous Operation of Timer/Counter2 .................................................151
18.10 Timer/Counter Prescaler ...............................................................................152
18.11 Register Description ......................................................................................153
19 SPI – Serial Peripheral Interface ......................................................... 158
19.1 Features ........................................................................................................158
19.2 Overview ........................................................................................................158
19.3 SS Pin Functionality ......................................................................................163
19.4 Data Modes ...................................................................................................164
19.5 Register Description ......................................................................................165
20 USART0 ................................................................................................. 168
20.1 Features ........................................................................................................168
20.2 Overview ........................................................................................................168
20.3 Clock Generation ...........................................................................................169
20.4 Frame Formats ..............................................................................................172
20.5 USART Initialization .......................................................................................173
20.6 Data Transmission – The USART Transmitter ..............................................175
20.7 Data Reception – The USART Receiver .......................................................177
20.8 Asynchronous Data Reception ......................................................................181
20.9 Multi-processor Communication Mode ..........................................................185
20.10 Examples of Baud Rate Setting .....................................................................186
20.11 Register Description ......................................................................................190
21 USI – Universal Serial Interface .......................................................... 195
21.1 Features ........................................................................................................195
21.2 Overview ........................................................................................................195
21.3 Functional Descriptions .................................................................................196
21.4 Alternative USI Usage ...................................................................................202
21.5 Register Descriptions ....................................................................................203
22 Analog Comparator .............................................................................. 207
22.1 Overview ........................................................................................................207
22.2 Analog Comparator Multiplexed Input ...........................................................208
22.3 Register Description ......................................................................................209
23 Analog to Digital Converter ................................................................. 211
23.1 Features ........................................................................................................211
23.2 Operation .......................................................................................................212
iv ATmega329/3290/649/6490
2552J–AVR–08/07
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