ATxmega32A4U Atmel Corporation, ATxmega32A4U Datasheet - Page 397

• Manufacturer Part Number: ATxmega32A4U
• Manufacturer: Atmel Corporation

Specifications of ATxmega32A4U

• Flash (kbytes): 32 Kbytes
• Pin Count: 44
• Max. Operating Frequency: 32 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 34
• Ext Interrupts: 34
• Usb Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device
• Spi: 7
• Twi (i2c): 2
• Uart: 5
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 12
• Adc Resolution (bits): 12
• Adc Speed (ksps): 2000
• Analog Comparators: 2
• Resistive Touch Screen: No
• Dac Channels: 2
• Dac Resolution (bits): 12
• Temp. Sensor: Yes
• Crypto Engine: AES/DES
• Sram (kbytes): 4
• Eeprom (bytes): 1024
• 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: 5
• Output Compare Channels: 16
• Input Capture Channels: 16
• Pwm Channels: 16
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

30.9.2
8331A–AVR–07/11
ACnMUXCTRL – Analog Comparator n Mux Control Register
• Bit 7:6 - Reserved
These bits are unused and reserved for future use. For compatibility with future devices, always
write these bits to zero when this register is written.
• Bit 5:3 - MUXPOS[2:0]: Positive Input MUX Selection
These bits select which input to be connected to the positive input of the Analog Comparator n,
according to
Table 30-3.
• Bit 2:0 - MUXNEG[2:0]: Analog Comparator Negative Input MUX Selection
These bits select which input to be connected to the negative input of the Analog Comparator,
according to
Table 30-4.
Bit
+0x02 / +0x03
Read/Write
Initial Value
MUXPOS[2:0]
MUXNEG[2:0]
000
001
010
011
100
101
110
111
000
001
010
011
100
101
110
111
Table
Table 30-4 on page
Positive Input MUX Selection
Negative Input MUX Selection
–
R
7
0
30-3.
Group Configuration
Group Configuration
6
–
R
0
BANDGAP
SCALER
PIN0
PIN1
PIN2
PIN3
PIN4
PIN5
PIN6
PIN0
PIN1
PIN3
PIN5
PIN7
DAC
DAC
397.
R/W
5
0
MUXPOS[2:0]
R/W
4
0
R/W
Atmel AVR XMEGA AU
3
0
Negative Input MUX Selection
Internal Bandgap Voltage
R/W
VCC Voltage Scaler
2
0
Description
DAC Output
DAC Output
MUXNEG[2:0]
Pin 0
Pin 1
Pin 2
Pin 3
Pin 4
Pin 5
Pin 6
Pin 0
Pin 1
Pin 3
Pin 5
Pin 7
R/W
1
0
R/W
0
0
ACnMUXCTRL
397