ATxmega256A3 Atmel Corporation, ATxmega256A3 Datasheet - Page 39

• Manufacturer Part Number: ATxmega256A3
• Manufacturer: Atmel Corporation

Specifications of ATxmega256A3

• 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 Speed: No
• Usb Interface: No
• 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

4.17.12
4.17.13
4.17.14
4.17.15
8077H–AVR–12/09
COORDX1 - Wafer Coordinate X Register 1
COORDY0 - Wafer Coordinate Y Register 0
COORDY1 - Wafer Coordinate Y Register 1
ADCACAL0 - ADCA 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
ADCACAL0 and ADCACAL1 contains the calibration value for the Analog to Digital Converter A
(ADCA). Calibration of the Analog to Digital Converters are done during production test of the
device. The calibration bytes are not loaded automatically into the ADC calibration registers, and
this must be done from software..
• Bit 7:0 - ADCACAL0[7:0] - ADCA Calibration Byte 0
This byte contains byte 0 of the ADCA calibration data, and must be loaded into the ADCA CALL
register.
Bit
+0x13
Read/Write
Initial Value
Bit
+0x14
Read/Write
Initial Value
Bit
+0x15
Read/Write
Initial Value
Bit
+0x20
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
ADCACAL0[7:0]
COORDX1[7:0]
COORDY0[7:0]
COORDY1[7:0]
R
R
R
R
3
x
3
x
3
x
3
x
R
R
R
R
2
2
2
2
x
x
x
x
R
R
R
R
1
1
1
1
x
x
x
x
XMEGA A
0
R
0
R
0
R
0
R
x
x
x
x
ADCACAL0
COORDX1
COORDY0
COORDY1
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