AT32UC3A0512_1 Datasheet, PDF (821/826 Pages) ATMEL Corporation – AVR32 32-Bit Microcontroller

AT32UC3A
21.3Block Diagram .....................................................................................................154
21.4Functional Description .........................................................................................154
21.5User Interface ......................................................................................................156
22 General-Purpose Input/Output Controller (GPIO) ............................. 170
22.1Features ..............................................................................................................170
22.2Overview ..............................................................................................................170
22.3Product dependencies .........................................................................................170
22.4Functional Description .........................................................................................171
22.5General Purpose Input/Output (GPIO) User Interface .........................................175
22.6Programming Examples ......................................................................................189
23 Serial Peripheral Interface (SPI) .......................................................... 191
23.1Features ..............................................................................................................191
23.2Description ...........................................................................................................191
23.3Block Diagram .....................................................................................................192
23.4Application Block Diagram ...................................................................................193
23.5Signal Description ................................................................................................194
23.6Product Dependencies ........................................................................................195
23.7Functional Description .........................................................................................196
23.8Serial Peripheral Interface (SPI) User Interface ..................................................206
24 Two-Wire Interface (TWI) ..................................................................... 220
24.1Features ..............................................................................................................220
24.2Overview ..............................................................................................................220
24.3List of Abbreviations ............................................................................................221
24.4Block Diagram .....................................................................................................221
24.5Application Block Diagram ...................................................................................222
24.6I/O Lines Description ...........................................................................................222
24.7Product Dependencies ........................................................................................222
24.8Functional Description .........................................................................................223
24.9Modes of Operation .............................................................................................223
24.10Master Mode ......................................................................................................224
24.11 Internal Address Usage Using the Peripheral DMA Controller (PDC) ..............228
24.12Multi-master Mode .............................................................................................235
24.13Slave Mode ........................................................................................................238
24.14Two-wire Interface (TWI) User Interface ...........................................................246
25 Synchronous Serial Controller (SSC) ................................................ 259
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32058H–AVR32–03/09