ATxmega256A3U Atmel Corporation, ATxmega256A3U Datasheet - Page 222

• 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

18.4
18.5
Table 18-2.
8331A–AVR–07/11
Address
+0x0C
+0x0D
+0x00
+0x01
+0x02
+0x03
+0x04
+0x08
+0x09
+0x0A
+0x0B
Offset
0x00
0x02
Register Summary
Interrupt Vector Summary
Name
INTFLAGS
RTC interrupt vectors and their word offset.
INTCTRL
STATUS
COMPH
COMPL
TEMP
CNTH
PERH
CTRL
CNTL
PERL
COMP_vect
OVF_vect
Source
Bit 7
–
–
–
–
Bit 6
–
–
–
–
Interrupt Description
Real-time counter overflow interrupt vector
Real-time counter compare match interrupt vector
Bit 5
–
–
–
–
Bit 4
–
–
–
–
COMP[15:8]
COMP[7:0]
TEMP[7:0]
CNT[15:8]
PER[15:8]
CNT[7:0]
PER[7:0]
Bit 3
–
–
–
COMPINTLVL[1:0]
Atmel AVR XMEGA AU
Bit 2
–
–
PRESCALER[2:0]
COMPIF
Bit 1
–
OVFINTLVL[1:0]
SYNCBUSY
OVFIF
Bit 0
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