ATxmega256A3U Atmel Corporation, ATxmega256A3U Datasheet - Page 69

• 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

35.6
Table 35-5.
8386A–AVR–07/11
Symbol
Clk
DNL
AVCC
VREF
R
C
INL
RES
f
Rin
Cin
Vin
Vin
ADC
AREF
AREF
ADC
(1)
(1)
ADC Characteristics
Parameter
Resolution
Conversion time (latency)
Sampling Time
ADC Clock frequency
Sample rate
Analog supply voltage
Reference voltage
Input resistance
Input capacitance
Reference input resistance
Reference input capacitance
Start-up time
ADC settling time
Input range
Conversion range
Conversion range
Integral non-linearity
Differential non-linearity
Offset Error
ADC Characteristics
(RES+2)/2+(GAIN !=0), RES = 8 or 2
1/2 Clk
Max is 1/4 of Peripheral clock frequency
Measuring internal signals
CURRLIMIT = LOW
CURRLIMIT = MEDIUM
CURRLIMIT = HIGH
Switched
Switched
(leackage only)
Static load
ADC clock cycles
After changing reference or input mode
After ADC flush
Differential mode, Vinp - Vinn
Single ended unsigned mode, Vinp
500kSPS
2000kSPS
500kSPS,
guaranteed
monotonic
2000kSPS,
guaranteed
monotonic
Temperature drift
Operating voltage drift
ADC
cycle
V
V
V
V
Condition
CC
CC
CC
CC
-1.0V < VREF< V
-1.0V < VREF< V
-1.0V < VREF< V
-1.0V < VREF< V
(2)
CC
CC
CC
CC
-0.6V
-0.6V
-0.6V
-0.6V
V
-VREF
CC
0.25
Min
100
100
100
100
100
-0.1
100
-ΔV
8
5
1
- 0.3
<0.01
±1.2
±1.5
±1.0
±1.5
±0.8
±0.5
±0.8
±0.5
<0.6
Typ
>10
4.0
4.4
12
12
-2
7
7
1
XMEGA A3U
AV
V
AV
VREF-ΔV
VREF
CC
2000
2000
1500
1000
Max
CC
125
500
CC
1.2
1.5
1.2
1.5
12
24
8
5
+ 0.3
7
1
2
3
2
3
+ 0.1
- 0.6
Clk
Clk
cycles
cycles
Units
kSPS
mV/K
mV/V
LSB
Bits
kHz
MΩ
mV
kΩ
µS
pF
pF
V
V
ADC
ADC
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