ATxmega256A3BU Atmel Corporation, ATxmega256A3BU Datasheet - Page 40

• 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

4.17.14
4.17.15
4.17.16
4.17.17
8331A–AVR–07/11
COORDX1 – Wafer Coordinate X Register 1
COORDY0 – Wafer Coordinate Y Register 0
COORDY1 – Wafer Coordinate Y Register 1
USBCAL0 – USB Calibration Register 0
• Bit 7:0 – COORDX0[7:0]: Wafer Coordinate X Byte 1
This byte contains byte 1 of wafer coordinate X for the device.
• Bit 7:0 – COORDY0[7:0]: Wafer Coordinate Y Byte 0
This byte contains byte 0 of wafer coordinate Y for the device.
• Bit 7:0 – COORDY1[7:0]: Wafer Coordinate Y Byte 1
This byte contains byte 1 of wafer coordinate Y for the device
USBCAL0 and USBCAL1 contain the calibration value for the USB pins. Calibration is done dur-
ing production to enable operation without requiring external components on the USB lines for
the device. The calibration bytes are not loaded automatically into the USB calibration registers,
so this must be done from software.
• Bit 7:0 – USBCAL0[7:0]: USB Pad Calibration Register 0
This byte contains byte 0 of the USB pin calibration data, and must be loaded into the USB
CALL register.
Bit
+0x13
Read/Write
Initial Value
Bit
+0x14
Read/Write
Initial Value
Bit
+0x15
Read/Write
Initial Value
Bit
+0x1A
Read/Write
Initial Value
R
R
R
R
7
x
7
x
7
x
7
x
R
R
R
R
6
x
6
x
6
x
6
x
R
R
R
R
5
5
5
5
x
x
x
x
4
R
4
R
4
R
4
R
x
x
x
x
COORDX1[7:0]
COORDY0[7:0]
COORDY1[7:0]
USBCAL0[7:0]
R
R
R
R
3
x
3
x
3
x
3
x
Atmel AVR XMEGA AU
R
R
R
R
2
2
2
2
x
x
x
x
R
R
R
R
1
1
1
1
x
x
x
x
0
R
0
R
0
R
0
R
x
x
x
x
COORDX1
COORDY0
COORDY1
USBCAL0
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