Datasheet

752
32142D–06/2013
ATUC64/128/256L3/4U
Figure 30-2. Analog Comparator Interface in Window Mode
30.6.5.1 Window Mode Output
When operating in window mode, each channel generates the same ACOUT outputs as in nor-
mal mode, see Section 30.6.4.1.
Additionally, the ACIFB generates a window mode signal (acwout) according to the common
input voltage to be compared:
• ACWOUT = 1 if the common input voltage is inside the window, V
ACN(N+1)
< V
common
< V
ACP(N)
• ACWOUT = 0 if the common input voltage is outside the window, V
common
< V
ACN(N+1)
or
V
common
> V
ACP(N)
• ACWOUT = 0 if the window mode output is not available (SR.ACRDYn=0 or
SR.ACRDYn+1=0)
30.6.5.2 Window Mode Interrupts
When operating in window mode, each channel can generate the same interrupts as in normal
mode, see Section 30.6.4.2.
Additionally, when channels operate in window mode, programming Window Mode Interrupt Set-
tings in the Window Mode Configuration Register (CONFWn.WIS) can cause interrupts to be
generated when:
• As soon as the common input voltage is inside the window.
• As soon as the common input voltage is outside the window.
• On toggle of the window compare output (ACWOUT).
• When the comparison in both channels in the window pair is ready.
Comparator pair 0
-
+
AC0
Interrupt
Generator
Window
Module
ACOUT0
Peripheral Event
Generator
Window
window event
-
+
AC1
Filter
Filter
SR.ACCS0
SR.WFCS0
ACAP0
ACAN0
ACBP0
COMMON
ACWOUT
ACBN0
IRQ
ACOUT1