xmega a3u - Elfa
xmega a3u - Elfa
xmega a3u - Elfa
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8.1 Features ..........................................................................................................17<br />
8.2 Overview ..........................................................................................................17<br />
9 Event System ......................................................................................... 18<br />
9.1 Features ..........................................................................................................18<br />
9.2 Overview ..........................................................................................................18<br />
10 System Clock and Clock options ......................................................... 20<br />
10.1 Features ..........................................................................................................20<br />
10.2 Overview ..........................................................................................................20<br />
10.3 Clock Sources .................................................................................................21<br />
11 Power Management and Sleep Modes ................................................. 23<br />
11.1 Features ..........................................................................................................23<br />
11.2 Overview ..........................................................................................................23<br />
11.3 Sleep Modes ....................................................................................................23<br />
12 System Control and Reset .................................................................... 25<br />
12.1 Features ..........................................................................................................25<br />
12.2 Overview ..........................................................................................................25<br />
12.3 Reset Sequence ..............................................................................................25<br />
12.4 Reset Sources .................................................................................................26<br />
13 WDT – Watchdog Timer ......................................................................... 27<br />
13.1 Features ..........................................................................................................27<br />
13.2 Overview ..........................................................................................................27<br />
14 Interrupts and Programmable Multilevel Interrupt Controller ........... 28<br />
14.1 Features ..........................................................................................................28<br />
14.2 Overview ..........................................................................................................28<br />
14.3 Interrupt vectors ...............................................................................................28<br />
15 I/O Ports .................................................................................................. 30<br />
15.1 Features ..........................................................................................................30<br />
15.2 Overview ..........................................................................................................30<br />
15.3 Output Driver ...................................................................................................31<br />
15.4 Input sensing ...................................................................................................33<br />
15.5 Alternate Port Functions ..................................................................................33<br />
16 TC0/1 – 16-bit Timer/Counter Type 0 and 1 ......................................... 34<br />
16.1 Features ..........................................................................................................34<br />
ii<br />
XMEGA A3U<br />
8386B–AVR–12/11