ATxmega256A3U Atmel Corporation, ATxmega256A3U Datasheet - Page 29

• 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

15.3
15.3.1
15.3.2
15.3.3
8386A–AVR–07/11
Output Driver
Push-pull
Pull-down
Pull-up
All port pins (Pn) have programmable output configuration. The port pins also have configurable
slew rate limitation to reduce electromagnetic emission.
Figure 15-1. I/O configuration - Totem-pole
Figure 15-2. I/O configuration - Totem-pole with pull-down (on input)
Figure 15-3. I/O configuration - Totem-pole with pull-up (on input)
OUTn
DIRn
OUTn
OUTn
DIRn
DIRn
INn
INn
INn
Pn
Pn
Pn
XMEGA A3U
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