Atmel AVR XMEGA 8/16-bit High Performance Low Power Flash Microcontrollers Manuel d'utilisateur télécharger pdf (Page 5)

8362E–AVR–01/12

XMEGA A3BU

All Atmel AVR XMEGA devices are supported with a full suite of program and system develop-

ment tools, including C compilers, macro assemblers, program debugger/simulators,

programmers, and evaluation kits.

3.1 Block Diagram

Figure 3-1. XMEGA A3BU block diagram.

Power

Supervision

POR/BOD &

RESET

PORT A (8)

PORT B (8)

DMA

Controller

SRAM

ADCA

ACA

DACB

ADCB

ACB

OCD

Int. Refs.

PDI

PA[0..7]

PB[0..7]/

JTAG

Watchdog

Timer

Watchdog

Oscillator

Interrupt

Controller

DATA BUS

Prog/Debug

Controller

VCC

GND

Oscillator

Circuits/

Clock

Generation

Oscillator

Control

Event System

Controller

JTAG

AREFA

AREFB

PDI_DATA

RESET/

PDI_CLK

PORT B

Sleep

Controller

DES

CRC

PORT C (8)

PC[0..7]

TCC0:1

USARTC0:1

TWIC

SPIC

PD[0..7] PE[0..5]

PORT D (8)

TCD0:1

USARTD0:1

SPID

TCE0:1

USARTE0

TWIE

PORT E (6)

Tempref

VCC/10

AES

USB

PORT R (2)

XTAL1

XTAL2

PR[0..1]

DATA BUS

NVM Controller

MORPEEhsalF

IRCOM

BUS Matrix

CPU

TCF0

USARTF0

PF[0..4,6..7]

PORT F (7)

EVENT ROUTING NETWORK

BAT

Power

Supervision

Battery Backup

Controller

Real Time

Counter

32.768 kHz

XOSC

TOSC1 TOSC2

VBAT

Digital function

Analog function

Programming, debug, test

Oscillator/Crystal/Clock

General purpose I/O

1 2 3 4 5 6 7 8 9 10 ... 17 18

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Atmel AVR XMEGA 8/16-bit High Performance Low Power Flash Microcontrollers Manuel d'utilisateur Page 5

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