ATxmega256A3 Atmel Corporation, ATxmega256A3 Datasheet - Page 41

• 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

4.17.20
4.17.21
4.17.22
4.17.23
8077H–AVR–12/09
TEMPSENSE1 - Temperature Sensor Calibration Register 1
DACAGAINCAL - DACA Gain Calibration Register
DACAOFFCAL - DACA Offset Calibration Register
DACBGAINCAL - DACB Gain Calibration Register
• Bit 7:0 - TEMPSENSE0[7:0] - Temperature Sensor Calibration Byte 0
This byte contains the byte 0 (8 LSB) of the temperature measurement.
• Bit 7:0 - TEMPSENSE1[7:0] - Temperature Sensor Calibration Byte 1
This byte contains byte 1 of the temperature measurement.
• Bit 7:0 - DACAGAINCAL[7:0] - DACA Gain Calibration Byte
This byte contains the gain calibration value for the Digital to Analog Converter A (DACA). Cali-
bration of the Digital to Analog Converters are done during production test of the device. The
calibration byte is not loaded automatically into the DAC Gain Calibration register, and this must
be done from software.
• Bit 7:0 - DACAOFFCAL[7:0] - DACA Offset Calibration Byte
This byte contains the offset calibration value for the Digital to Analog Converter A (DACA). Cal-
ibration of the Digital to Analog Converters are done during production test of the device. The
calibration byte is not loaded automatically into the DAC Offset Calibration register, and this
must be done from software.
Bit
+0x2F
Read/Write
Initial Value
Bit
+0x30
Read/Write
Initial Value
Bit
+0x31
Read/Write
Initial Value
Bit
+0x32
Read/Write
Initial Value
7
R
0
7
R
0
7
R
0
7
R
0
R
R
R
R
6
0
6
0
6
0
6
0
R
R
R
R
5
0
5
0
5
0
5
0
R
R
R
R
4
0
4
0
4
0
4
0
DACAGAINCAL[7:0]
DACBGAINCAL[7:0]
DACAOFFCAL[7:0]
TEMPSENSE1[7:0]
R
R
R
R
3
x
3
x
3
x
3
x
R
R
R
R
2
x
2
x
2
x
2
x
R
R
R
R
1
x
1
x
1
x
1
x
XMEGA A
R
R
R
R
0
x
0
x
0
x
0
x
DACAGAINCAL
DACBGAINCAL
DACAOFFCAL
TEMPSENSE1
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