atxmega192a1-au ATMEL Corporation, atxmega192a1-au Datasheet - Page 46
atxmega192a1-au
Manufacturer Part Number
atxmega192a1-au
Description
8/16-bit Xmega A1 Microcontroller
Manufacturer
ATMEL Corporation
Datasheet
1.ATXMEGA192A1-AU.pdf
(113 pages)
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26.3
26.4
8067M–AVR–09/10
Input Selection
Window Function
The Analog comparators have a very flexible input selection and the two comparators grouped
in a pair may be used to realize a window function. One pair of analog comparators is shown in
Figure 26-1 on page
•
•
•
The window function is realized by connecting the external inputs of the two analog comparators
in a pair as shown in
Figure 26-2. Analog comparator window function
Input selection from pin
Internal signals available on positive analog comparator inputs
Internal signals available on negative analog comparator inputs
– Pin 0, 1, 2, 3, 4, 5, 6 selectable to positive input of analog comparator
– Pin 0, 1, 3, 5, 7 selectable to negative input of analog comparator
– Output from 12-bit DAC
– 64-level scaler of the VCC, available on negative analog comparator input
– Bandgap voltage reference
– Output from 12-bit DAC
Upper limit of window
Input signal
Lower limit of window
45.
Figure
26-2.
+
+
-
-
AC0
AC1
sensitivity
Interrupt
control
Interrupts
Events
XMEGA A1
46
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