NXP Semiconductors K32 L2A Series, Reference Manual, Page: 363 / 1379

+
-
IRQ
INP
INM
FILTER_CNT
INV
COUT
COUT
OPE
SE
CMPO to
PAD
COUTA
0
1
WE
1
0
SE=0
CGMUX
COS
FILT_PER
0
+
-
FILT_PER
bus clock
COS
>
IER/F CFR/F
WINDOW/SAMPLE
EN, PMODE, HYSTCTR[1:0
]
divided
bus
clock
CMPO
0x01
Internal bus
Polarity
select
Window
control
Filter
block
Interrupt
control
Clock
prescaler
To other SOC functions
0
Figure 16-7. Sampled, Filtered (# 4B): sampling point internally derived
The only difference in operation between Sampled, Non-Filtered (# 3B) and Sampled,
Filtered (# 4B) is that now, CR0[FILTER_CNT]>1, which activates filter operation.
16.3.1.5 Windowed mode (#s 5A & 5B)
The following figure illustrates comparator operation in the Windowed mode, ignoring
latency of the analog comparator, polarity select, and window control block. It also
assumes that the polarity select is set to non-inverting state.
NOTE
The analog comparator output is passed to COUTA only when
the WINDOW signal is high.
In actual operation, COUTA may lag the analog inputs by up to one bus clock cycle plus
the combinational path delay through the comparator and polarity select logic.
Chapter 16 Comparator (CMP)
K32 L2A Reference Manual, Rev. 2, 01/2020
NXP Semiconductors 363