Datasheet

357
XMEGA B [DATASHEET]
8291B–AVR–01/2013
This flag 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 AC0. AC0IF is set according to the INTMODE setting in the corresponding “ACnCTRL –
Analog Comparator n Control register” on page 353.
This flag is automatically cleared when the analog comparator 0 interrupt vector is executed. The flag can also be
cleared by writing a one to its bit location.
27.8.7 CURRCTRL – Current Source Control register
 Bit 7 – CURRENT: Current Source Enable
Setting this bit to one will enable the constant current source.
 Bit 6:2 – 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 MUXNEG 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 MUXNEG in AC0MUXTRL.
27.8.8 CURRCALIB – Current Source Calibration register
 Bits 7:4 – 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 3:0 – CALIB[3:0]: Current Source Calibration
The constant current source is calibrated during production. A calibration value can be read from the signature row and
written to the CURRCALIB register from software. Refer to device data sheet for default calibration values and user
calibration range.
Bit 7 6 5432 1 0
+0x08 CURRENT
– – – – – AC1CURR AC0CURR
Read/Write R/W R RRRRR/WR/W
Initial Value 0 0 0000 0 0
Bit 7 6 5 4 3 2 1 0
+0x09
– – – – CALIB[3:0]
Read/Write R R R R R/W R/W R/W R/W
Initial Value 0 0 0 0 0 0 0 0