ATxmega256A3U Atmel Corporation, ATxmega256A3U Datasheet - Page 53

• Manufacturer Part Number: ATxmega256A3U
• Manufacturer: Atmel Corporation

Specifications of ATxmega256A3U

• Flash (kbytes): 256 Kbytes
• Pin Count: 64
• Max. Operating Frequency: 32 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 50
• Ext Interrupts: 50
• Usb Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device
• Spi: 10
• Twi (i2c): 2
• Uart: 7
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 16
• Adc Resolution (bits): 12
• Adc Speed (ksps): 2000
• Analog Comparators: 4
• Resistive Touch Screen: No
• Dac Channels: 2
• Dac Resolution (bits): 12
• Temp. Sensor: Yes
• Crypto Engine: AES/DES
• Sram (kbytes): 16
• Eeprom (bytes): 4096
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: Yes
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.6 to 3.6
• Operating Voltage (vcc): 1.6 to 3.6
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 7
• Output Compare Channels: 22
• Input Capture Channels: 22
• Pwm Channels: 22
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

31.2
Table 31-1.
Table 31-2.
8386A–AVR–07/11
PORT A
GND
AVCC
PA0
PA1
PA2
PA3
PA4
PA5
PA6
PA7
PORT B
PB0
PB1
PB2
PB3
PB4
PB5
PB6
PB7
GND
VCC
Alternate Pin Functions
PIN #
PIN #
60
61
62
63
64
10
11
12
13
14
15
1
1
1
4
5
6
7
8
9
Port A - Alternate functions
Port B - Alternate functions
SYNC/ASYNC
SYNC/ASYNC
INTERRUPT
INTERRUPT
SYNC
SYNC
SYNC
SYNC
SYNC
SYNC
SYNC
SYNC
SYNC
SYNC
SYNC
SYNC
SYNC
SYNC
The tables below show the primary/default function for each pin on a port in the first column, the
pin number in the second column, and then all alternate pin functions in the remaining columns.
The head row shows what peripheral that enable and use the alternate pin functions.
For better flexibility, some alternate functions also have selectable pin locations for their func-
tions, this is noted under the the first table where this apply.
POS/GAINPOS
POS/GAINPOS
ADCA
ADCA
ADC10
ADC11
ADC12
ADC13
ADC14
ADC15
ADC0
ADC1
ADC2
ADC3
ADC4
ADC5
ADC6
ADC7
ADC8
ADC9
POS/GAINPOS
POS/GAINPOS
ADCB
ADC10
ADC11
ADC12
ADC13
ADC14
ADC15
ADC8
ADC9
ADCB
ADC0
ADC1
ADC2
ADC3
ADC4
ADC5
ADC6
ADC7
ADCB
ADCA
NEG
ADC0
ADC1
ADC2
ADC3
NEG
ADC0
ADC1
ADC2
ADC3
GAINNEG
ADCB
ADC4
ADC5
ADC6
ADC7
GAINNEG
ADCA
ADC4
ADC5
ADC6
ADC7
ACB
POS
AC0
AC1
AC2
AC3
AC4
AC5
AC6
ACA
POS
AC0
AC1
AC2
AC3
AC4
AC5
AC6
NEG
ACB
AC0
AC1
AC3
AC5
AC7
ACA
NEG
AC0
AC1
AC3
AC5
AC7
AC1OUT
AC0OUT
ACB
OUT
XMEGA A3U
DACB
AC1OUT
AC0OUT
DAC0
DAC1
ACA
OUT
REFB
AREF
REFA
AREF
JTAG
TMS
TDO
TCK
TDI
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