ATxmega32A4U Atmel Corporation, ATxmega32A4U Datasheet - Page 400

• 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

30.9.7
30.9.8
8331A–AVR–07/11
CURRCTRL – Current Source Control Register
CURRCALIB – Current Source Calibration Register
The WIF is automatically cleared when the analog comparator window interrupt vector is exe-
cuted. The flag can also be cleared by writing a one to its bit location.
• Bit 1 – AC1IF: Analog Comparator 1 Interrupt Flag
This is the interrupt flag for Analog Comparator 1. AC1IF is set according to the INTMODE set-
ting in the corresponding
The AC1IF is automatically cleared when the analog comparator 1 interrupt vector is executed.
The flag can also be cleared by writing a one to its bit location.
• Bit 0 – AC0IF: Analog Comparator 0 Interrupt Flag
This is the interrupt flag for Analog Comparator 0. AC0IF is set according to the INTMODE set-
ting in the corresponding
The AC0IF is automatically cleared when the analog comparator interrupt vector is executed.
The flag can also be cleared by writing a one to its bit location.
• Bit 7 – CURRENT: Current Source Enable
Setting this bit to one will enable the constant current source.
• Bit 6 – CURRMODE: Current Mode
Setting this bit to one will combine the two Analog Comparator current sources in order to double
the output current for each Analog Comparator.
• Bit 5:2 – 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 1 – AC1CURR: AC1 Current Source Output Enable
Setting this bit to one will enable the constant current source output on the pin selected by MUX-
NEG in AC1MUXTRL.
• Bit 0 – AC0CURR: AC0 Current Source Output Enable
Setting this bit to one will enable the constant current source output on the pin selected by MUX-
NEG in AC0MUXTRL.
Bit
+0x09
Read/Write
Initial Value
Bit
+0x08
Read/Write
Initial Value
CURRENT
R/W
R
7
–
0
7
0
CURRMODE
R
6
–
0
R/W
6
0
”ACnCTRL – Analog Comparator n Control Register” on page
”ACnCTRL – Analog Comparator n Control Register” on page
R
5
–
0
5
–
R
0
4
–
R
0
4
–
R
0
R/W
3
0
Atmel AVR XMEGA AU
R
3
–
0
R/W
2
0
R
2
–
0
CALIB[3:0]
AC1CURR
R/W
R/W
1
0
1
0
AC0CURR
R/W
R/W
0
0
0
0
CURRCALIB
CURRCTRL
396.
396.
400