ATXMEGA256A3BU View Datasheet(PDF) - Atmel Corporation
Part Name
Description
Manufacturer
ATXMEGA256A3BU Datasheet PDF : 143 Pages
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2. Pinout/Block Diagram
Figure 2-1. Block diagram and pinout.
Power
Ground
Digital function
Analog function / Oscillators
Programming, debug, test
External clock / Crystal pins
General Purpose I /O
PA3
PA4
PA5
PA6
PA7
PB0
PB1
PB2
PB3
PB4
PB5
PB6
PB7
GND
VCC
PC0
1
2
3
4
AREF
5
ADC
AC0:1
6
7
8
AREF
ADC
9
DAC
10
AC0:1
JTAG
11
12
13
14
15
16
Port R
XOSC
DATA BUS
OSC/CLK
Control
Internal
oscillators
Watchdog
Power
oscillator Supervision
Sleep
Controller
Real Time
Counter
Watchdog
Timer
Reset
Controller
Event System
Controller
Crypto /
CRC
OCD
Prog/Debug
Interface
Interrupt
Controller
BUS
matrix
Internal
references
CPU
DMA
Controller
FLASH
EEPROM SRAM
DATA BUS
EVENT ROUTING NETWORK
Battery
Backup
Port C
Port D
Port E
Port F
48
PF2
47
PF1
46
PF0
45
VCC
44
GND
43
TOSC1
42
TOSC2
41
PE5
40
PE4
39
PE3
38
PE2
37
PE1
36
PE0
35
VCC
34
GND
33
PD7
Notes:
1. For full details on pinout and pin functions refer to “Pinout and Pin Functions” on page 55.
2. The large center pad underneath the QFN/MLF package should be soldered to ground on the board to ensure good mechanical stability.
XMEGA A3BU [DATASHEET]
3
8362F–AVR–02/2013
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