xmega a3u - Elfa
xmega a3u - Elfa
xmega a3u - Elfa
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XMEGA A3U<br />
3.1 Block Diagram<br />
All Atmel AVR XMEGA devices are supported with a full suite of program and system development<br />
tools, including C compilers, macro assemblers, program debugger/simulators,<br />
programmers, and evaluation kits.<br />
Figure 3-1.<br />
XMEGA A3U block diagram.<br />
Digital function<br />
Analog function<br />
Programming, debug, test<br />
Oscillator/Crystal/Clock<br />
General Purpose I/O<br />
XTAL1<br />
XTAL2<br />
PR[0..1]<br />
PORT R (2)<br />
Oscillator<br />
Circuits/<br />
Clock<br />
Generation<br />
Real Time<br />
Counter<br />
Watchdog<br />
Oscillator<br />
DATA BUS<br />
Watchdog<br />
Timer<br />
PA[0..7]<br />
PORT A (8)<br />
ACA<br />
ADCA<br />
Event System<br />
Controller<br />
DMA<br />
Controller<br />
SRAM<br />
Oscillator<br />
Control<br />
Sleep<br />
Controller<br />
Power<br />
Supervision<br />
POR/BOD &<br />
RESET<br />
VCC<br />
GND<br />
AREFA<br />
BUS Matrix<br />
Prog/Debug<br />
Controller<br />
PDI<br />
RESET/<br />
PDI_CLK<br />
PDI_DATA<br />
Int. Refs.<br />
Tempref<br />
AES<br />
OCD<br />
JTAG<br />
PORT B<br />
AREFB<br />
DES<br />
ADCB<br />
CRC<br />
CPU<br />
Interrupt<br />
Controller<br />
PB[0..7]/<br />
JTAG<br />
ACB<br />
PORT B (8)<br />
DACB<br />
NVM Controller<br />
Flash<br />
EEPROM<br />
USARTF0<br />
TCF0<br />
PORT F (8)<br />
PF[0..7]<br />
IRCOM<br />
DATA BUS<br />
EVENT ROUTING NETWORK<br />
TCC0:1<br />
USARTC0:1<br />
SPIC<br />
TWIC<br />
TCD0:1<br />
USARTD0:1<br />
SPID<br />
USB<br />
TCE0:1<br />
USARTE0:1<br />
SPIE<br />
TWIE<br />
To Clock<br />
Generator<br />
PORT C (8)<br />
PORT D (8)<br />
PORT E (8)<br />
TOSC1<br />
PC[0..7]<br />
PD[0..7]<br />
PE[0..7]<br />
TOSC2<br />
5<br />
8386B–AVR–12/11