ATxmega256A3BU Atmel Corporation, ATxmega256A3BU Datasheet - Page 351

• Manufacturer Part Number: ATxmega256A3BU
• Manufacturer: Atmel Corporation

Specifications of ATxmega256A3BU

• 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: 47
• Ext Interrupts: 49
• Usb Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device
• Spi: 8
• Twi (i2c): 2
• Uart: 6
• 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

27.11.4
8331A–AVR–07/11
BASEADDR – Base Address Register
• Bit 15:4 – BASEADDR[23:12]: Chip Select Base Address
The base address is the lowest address in the address space enabled by a chip select. Together
with the Chip Select Address Size (ASIZE) setting in “CTRLA - Chip Select Control Register A”,
this gives the address space for the Chip Select.
• Bit 3:0 – Reserved
These bits are reserved and will always be read as zero.
Bit
+0x02
Read/Write
Initial Value
Bit
+0x03
Read/Write
Initial Value
R/W
R/W
7
0
7
0
BASEADDR[15:12]
R/W
R/W
6
0
6
0
R/W
R/W
5
0
5
0
R/W
BASEADDR[23:16]
R/W
4
0
4
0
R/W
3
–
R
0
3
0
Atmel AVR XMEGA AU
R/W
2
–
R
0
2
0
R/W
1
–
R
0
1
0
R/W
R
0
0
0
–
0
BASEADDRL
BASEADDRL
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