Atmel XMEGA A3 series

ii
8068C–AVR–06/08
XMEGA A3
10.2Overview ................................................................................................................17
10.3Clock Options ........................................................................................................18
11 Power Management and Sleep Modes ................................................. 20
11.1Features ................................................................................................................20
11.2Overview ................................................................................................................20
11.3Sleep Modes ..........................................................................................................20
12 System Control and Reset .................................................................... 22
12.1Features ................................................................................................................22
12.2Resetting the AVR .................................................................................................22
12.3Reset Sources .......................................................................................................22
12.4WDT - Watchdog Timer .........................................................................................23
13 PMIC - Programmable Multi-level Interrupt Controller ....................... 24
13.1Features ................................................................................................................24
13.2Overview ................................................................................................................24
13.3Interrupt vectors .....................................................................................................24
14 I/O Ports .................................................................................................. 26
14.1Features ................................................................................................................26
14.2Overview ................................................................................................................26
14.3I/O configuration ....................................................................................................26
14.4Input sensing .........................................................................................................29
14.5Port Interrupt ..........................................................................................................29
14.6Alternate Port Functions ........................................................................................29
15 T/C - 16-bits Timer/Counter with PWM ................................................. 30
15.1Features ................................................................................................................30
15.2Overview ................................................................................................................30
16 AWEX - Advanced Waveform Extension ............................................. 32
16.1Features ................................................................................................................32
16.2Overview ................................................................................................................32
17 Hi-Res - High Resolution Extension ..................................................... 33
17.1Features ................................................................................................................33
17.2Overview ................................................................................................................33
18 RTC - Real-Time Counter ....................................................................... 34
18.1Features ................................................................................................................34