8/16-bit Atmel XMEGA A3U Microcontroller
ATxmega256A3U / ATxmega192A3U /
ATxmega128A3U / ATxmega64A3U
DATASHEET
Features
High-performance, low-power Atmel
®
AVR
®
XMEGA
®
8/16-bit Microcontroller
Nonvolatile program and data memories
̶
64K - 256KBytes of in-system self-programmable flash
̶
4K - 8KBytes boot section
̶
2K - 4KBytes EEPROM
̶
4K - 16KBytes internal SRAM
Peripheral features
̶
Four-channel DMA controller
̶
Eight-channel event system
̶
Seven 16-bit timer/counters
Four timer/counters with four output compare or input capture channels
Three timer/counters with two output compare or input capture channels
High resolution extension on all timer/counters
Advanced waveform extension (AWeX) on one timer/counter
̶
One USB device interface
USB 2.0 full speed (12Mbps) and low speed (1.5Mbps) device compliant
32 Endpoints with full configuration flexibility
̶
Seven USARTs with IrDA support for one USART
̶
Two two-wire interfaces with dual address match (I
2
C and SMBus compatible)
̶
Three serial peripheral interfaces (SPIs)
̶
AES and DES crypto engine
̶
CRC-16 (CRC-CCITT) and CRC-32 (IEEE
®
802.3) generator
̶
16-bit real time counter (RTC) with separate oscillator
̶
Two sixteen-channel, 12-bit, 2msps Analog to Digital Converters
̶
One two-channel, 12-bit, 1msps Digital to Analog Converter
̶
Four Analog Comparators with window compare function, and current
sources
̶
External interrupts on all general purpose I/O pins
̶
Programmable watchdog timer with separate on-chip ultra low power
oscillator
̶
QTouch
®
library support
Capacitive touch buttons, sliders and wheels
Special microcontroller features
̶
Power-on reset and programmable brown-out detection
̶
Internal and external clock options with PLL and prescaler
̶
Programmable multilevel interrupt controller
̶
Five sleep modes
Atmel-8386E-AVR-XMEGA A3U-Datasheet_09/2014
3.
4.
For packaging information, see
“Packaging information” on page 71.
Tape and Reel.
Package Type
64A
64M2
64-lead, 14 x 14mm body size, 1.0mm body thickness, 0.8mm lead pitch, thin profile plastic quad flat package (TQFP)
64-pad, 9 x 9 x 1.0mm body, lead pitch 0.50mm, 7.65mm exposed pad, quad flat no-lead package (QFN)
Typical Applications
Industrial control
Factory automation
Building control
Board control
White goods
Climate control
RF and ZigBee
®
USB connectivity
Sensor control
Optical
Low power battery applications
Power tools
HVAC
Utility metering
Medical applications
XMEGA A3U [DATASHEET]
Atmel-8386E-AVR-XMEGA A3U-Datasheet_09/2014
4
2.
Pinout/Block Diagram
Block diagram and pinout.
Programming, debug, test
External clock /Crystal pins
General Purpose I /O
Power
Ground
Digital function
Analog function /Oscillators
Figure 2-1.
AVCC
RESET/PDI
GND
VCC
GND
PA2
PA1
PA0
PR1
PR0
PF5
64
63
58
PF7
62
61
60
57
59
55
54
PF6
53
52
56
51
50
PF4
PDI
Port R
PA3
PA4
PA5
PA6
PA7
PB0
PB1
PB2
PB3
PB4
PB5
PB6
PB7
GND
VCC
PC0
1
2
3
Port A
XOSC
DATA BUS
OSC/CLK
Control
AREF
ADC
AC0:1
Event System
Controller
Interrupt
Controller
Internal
references
CPU
Crypto /
CRC
OCD
Prog/Debug
Interface
DMA
Controller
BUS
matrix
Sleep
Controller
Real Time
Counter
Watchdog
Timer
Reset
Controller
Internal
oscillators
Watchdog
oscillator
Power
Supervision
49
PF3
48
47
46
45
44
43
42
41
40
39
FLASH
EEPROM
SRAM
PF2
PF1
PF0
VCC
GND
PE7
PE6
PE5
PE4
PE3
PE2
PE1
PE0
VCC
GND
PD7
4
5
6
7
8
9
10
11
12
13
AREF
Port B
ADC
DAC
AC0:1
JTAG
38
37
36
USART0
DATA BUS
EVENT ROUTING NETWORK
USART0:1
USART0:1
USART0:1
IRCOM
14
15
16
35
34
33
TC0:1
TC0:1
TC0:1
Port C
Port D
Port E
18
20
22
17
19
21
23
24
27
TC0:1
TOSC
USB
TWI
TWI
SPI
SPI
SPI
Port F
26
25
PD1
PD3
PD2
PD4
PC1
PC3
PC5
PC7
30
PD0
PD5
PC2
PC4
PC6
31
28
29
GND
Note:
1.
For full details on pinout and alternate pin functions refer to
“Pinout and Pin Functions” on page 59.
VCC
XMEGA A3U [DATASHEET]
Atmel-8386E-AVR-XMEGA A3U-Datasheet_09/2014
PD6
32
5
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