ATxmega256A3U Atmel Corporation, ATxmega256A3U Datasheet - Page 71

• 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

35.7
Table 35-7.
Note:
8386A–AVR–07/11
Symbol
AVREF
R
DNL
R
C
INL
RES
channel
Fclk
AREF
AREF
(1)
(1)
DAC Characteristics
1. Maximum numbers are based on characterisation and not tested in production, and valid for 5% to 95% output voltage range.
Parameter
Input Resolution
External reference voltage
DC output impedance
Linear output voltage range
Reference input resistance
Reference input capacitance
Minimum Resistance load
Maximum capacitance laod
Output sink/source
Enable, reset to code
Integral non-linearity
Differential Non-Linearity
Gain error
Gain calibration step size
Gain calibration drift
Offset error
Offset calibration step size
Conversion rate
DAC Characteristics
Static load
1000Ω serial resistance
Operating within specification
Safe operation
VREF= Ext 1.0V
VREF=AVCC
VREF=INT1V
VREF=Ext 1.0V,
guaranteed
monotonic
VREF=AVCC,
guaranteed
monotonic
VREF=INT1V
After calibration
VREF= Ext 1.0V
After calibration
Fout=Fclk/4,
Cload=100pF,
Max step size
Condition
V
V
V
V
V
V
V
V
V
V
V
V
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
= 1.6V
= 3.6V
= 1.6V
= 3.6V
= 1.6V
= 3.6V
= 1.6V
= 3.6V
= 1.6V
= 3.6V
= 1.6V
= 3.6V
0.15
Min
1.0
1
0
0
±2.0
±1.5
±2.0
±1.5
±3.0
±3.0
±1.5
±0.6
±1.0
±0.6
±3.0
±3.0
<0.2
Typ
>10
<4
<1
7
0
4
1
XMEGA A3U
AV
AV
V
1000
1000
CC
CC
CC
Max
100
2.5
1.5
3.5
1.5
12
50
10
1
3
4
4
3
/1000
-0.6
-0.15
Units
kSPS
mV/K
LSB
LSB
Bits
MΩ
mA
kΩ
pF
nF
Ox
pF
Ω
V
71