ATxmega256A3U Atmel Corporation, ATxmega256A3U Datasheet - Page 11

• 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

7.4
Figure 7-2.
8386A–AVR–07/11
Byte Address
Data Memory
5FFF
17FF
1000
2000
FFF
Data Memory Map (Hexadecimal address)
0
ATxmega192A3U
Internal SRAM
I/O Registers
RESERVED
EEPROM
(16K)
(4K)
(2K)
The Data memory contains the I/O Memory, internal SRAM, optionally memory mapped
EEPROM, and external memory if available. The data memory is organized as one continuous
memory section, see
and SRAM will always have the same start addresses for all XMEGA devices.
Byte Address
Figure 7-2 on page
3FFF
17FF
1000
2000
FFF
0
ATxmega128A3U
Internal SRAM
I/O Registers
RESERVED
EEPROM
(4K)
(2K)
(8K)
11. To simplify development, I/O Memory, EEPROM
Byte Address
Byte Address
1FFF
5FFF
1000
2000
2FFF
17FF
FFF
1000
2000
FFF
XMEGA A3U
0
0
ATxmega256A3U
ATxmega64A3U
Internal SRAM
Internal SRAM
I/O Registers
I/O Registers
EEPROM
RESERVED
EEPROM
(16K)
(4K)
(4K)
(4K)
(2K)
(4K)
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