Datasheet

3
8069R–AVR–06/2013
XMEGA A4
Not recommended for new designs -
Use XMEGA A4U series
2. Pinout/Block Diagram
Figure 2-1. Bock Diagram and TQFP/QFN pinout
Notes: 1. For full details on pinout and pin functions refer to ”Pinout and Pin Functions” on page 49.
2. The large center pad underneath the QFN/MLF package should be soldered to ground on the board to ensure good
mechanical stability.
INDEX CORNER
PA 5
PA 6
PA 7
PB0
PB1
PB2
PB3
GND
VCC
PC0
PC1
12 13 14 15 16 17 18 19 20 21 22
44 43 42 41 40 39 38 37 36 35 34
33
32
31
30
29
28
27
26
25
24
23
1
2
3
4
5
6
7
8
9
10
11
PC2 PC3 PC4 PC5 PC6 PC7
GND
VCC
PD0 PD1 PD2
PE3
PE2
VCC
GND
PE1
PE0
PD7
PD6
PD5
PD4
PD3
PA 4 PA 3 PA 2 PA 1 PA 0 AVCC GND PR1 PR0 RESET/PDI PDI
FLASH
RAM
E
2
PROM
DMA
Interrupt Controller
OCD
ADC A
DAC B
AC A0
AC A1
A
Port
B
Event System ctrl
T/C0:1
Port R
Power
Control
Reset
Control
Watchdog
OSC/CLK
Control
BOD POR
RTC
EVENT ROUTING NETWORK
DATA B U S
DATA B U S
VREF
TEMP
Port C
CPU
Port
A
USART0:1 TWI SPI
T/C0:1
Port D
USART0:1 SPI
T/C0
Port E
USART0 TWI