ATxmega64A3 Atmel Corporation, ATxmega64A3 Datasheet - Page 42

• Manufacturer Part Number: ATxmega64A3
• Manufacturer: Atmel Corporation

Specifications of ATxmega64A3

• Flash (kbytes): 64 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): 4
• Eeprom (bytes): 2048
• 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

8068T–AVR–12/10
Figure 25-1. ADC overview
Each ADC has four MUX selection registers with a corresponding result register. This means
that four channels can be sampled within 1.5 µs without any intervention by the application other
than starting the conversion. The results will be available in the result registers.
The ADC may be configured for 8- or 12-bit result, reducing the minimum conversion time (prop-
agation delay) from 3.5 µs for 12-bit to 2.5 µs for 8-bit result.
ADC conversion results are provided left- or right adjusted with optional ‘1’ or ‘0’ padding. This
eases calculation when the result is represented as a signed integer (signed 16-bit number).
PORTA and PORTB each has one ADC. Notation of these peripherals are ADCA and ADCB,
respectively.
Channel C MUX selection
Channel D MUX selection
Channel A MUX selection
Channel B MUX selection
1-64 X
Reference selection
Configuration
ADC
Trigger
Event
Channel A
Channel B
Channel C
Channel D
Register
Register
Register
Register
XMEGA A3
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