DOC7707 datasheet(303/307 Pages) ETC1

303 / 307 page

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7707F–AVR–11/10

AT90USB82/162

14.8 8-bit Timer/Counter Register Description ..........................................................100

16-bit Timer/Counter 1 with PWM ....................................................... 107

15.1 Overview ...........................................................................................................107

15.2 Accessing 16-bit Registers ................................................................................109

15.3 Timer/Counter Clock Sources ...........................................................................112

15.4 Counter Unit ......................................................................................................113

15.5 Input Capture Unit .............................................................................................114

15.6 Output Compare Units .......................................................................................116

15.7 Compare Match Output Unit ..............................................................................118

15.8 Modes of Operation ...........................................................................................119

15.9 Timer/Counter Timing Diagrams .......................................................................126

15.10 16-bit Timer/Counter Register Description ......................................................128

Serial Peripheral Interface – SPI ......................................................... 137

16.1 SS Pin Functionality ..........................................................................................141

16.2 Data Modes .......................................................................................................144

USART ................................................................................................... 146

17.1 Overview ...........................................................................................................146

17.2 Clock Generation ...............................................................................................147

17.3 Frame Formats ..................................................................................................150

17.4 USART Initialization ..........................................................................................152

17.5 Data Transmission – The USART Transmitter ..................................................153

17.6 Data Reception – The USART Receiver ...........................................................155

17.7 Asynchronous Data Reception ..........................................................................159

17.8 Multi-processor Communication Mode ..............................................................162

17.9 Hardware Flow Control ......................................................................................163

17.10 USART Register Description ...........................................................................165

17.11 Examples of Baud Rate Setting ......................................................................169

USART in SPI Mode ............................................................................. 173

18.1 Overview ...........................................................................................................173

18.2 Clock Generation ...............................................................................................174

18.3 SPI Data Modes and Timing .............................................................................175

18.4 Frame Formats ..................................................................................................175

18.5 Data Transfer ....................................................................................................177

18.6 USART MSPIM Register Description ................................................................179

18.7 AVR USART MSPIM vs.

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