NXP Semiconductors K22F series, Reference Manual, Page: 831 / 1407

NOTE
See the chip configuration section for the source of sample/
window input.
The analog comparator block is powered and active. CMPO may be optionally inverted,
but is not subject to external sampling or filtering. Both window control and filter blocks
are completely bypassed. SCR[COUT] is updated continuously. The path from
comparator input pins to output pin is operating in combinational unclocked mode.
COUT and COUTA are identical.
For control configurations which result in disabling the filter block, see the Filter Block
Bypass Logic diagram.
35.3.1.3 Sampled, Non-Filtered mode (#s 3A & 3B)
+
-
IRQ
INP
INM
FILTER_CNT
INV
COUT
COUT
OPE
SE
CMPO to
PAD
COUTA
1
WE
0
SE=1
CGMUX
COS
FILT_PER
1
0
FILT_PER
COS
0x01
IER/F CFR/F
WINDOW/SAMPLE
1
0
EN,PMODE,HYSTCTR[1:0]
divided
bus
clock
CMPO
bus clock
Internal bus
Polarity
select
Window
control
Filter
block
Interrupt
control
To other SOC functions
Clock
prescaler
Figure 35-4. Sampled, Non-Filtered (# 3A): sampling point externally driven
In Sampled, Non-Filtered mode, the analog comparator block is powered and active. The
path from analog inputs to COUTA is combinational unclocked. Windowing control is
completely bypassed. COUTA is sampled whenever a rising-edge is detected on the filter
block clock input.
Chapter 35 Comparator (CMP)
K22F Sub-Family Reference Manual, Rev. 4, 08/2016
NXP Semiconductors 831