CMPx_CR1 field descriptions (continued)
Field Description
CMP Trigger mode depends on an external timer resource to periodically enable the CMP and 6-bit DAC
in order to generate a triggered compare.
Upon setting TRIGM, the CMP and DAC are placed in a standby state until an external timer resource
trigger is received.
See the chip configuration chapter for details about the external timer resource.
0 Trigger mode is disabled.
1 Trigger mode is enabled.
4
PMODE
Power Mode Select
See the electrical specifications table in the device Data Sheet for details.
0 Low-Speed (LS) Comparison mode selected. In this mode, CMP has slower output propagation delay
and lower current consumption.
1 High-Speed (HS) Comparison mode selected. In this mode, CMP has faster output propagation delay
and higher current consumption.
3
INV
Comparator INVERT
Allows selection of the polarity of the analog comparator function. It is also driven to the COUT output, on
both the device pin and as SCR[COUT], when OPE=0.
0 Does not invert the comparator output.
1 Inverts the comparator output.
2
COS
Comparator Output Select
0 Set the filtered comparator output (CMPO) to equal COUT.
1 Set the unfiltered comparator output (CMPO) to equal COUTA.
1
OPE
Comparator Output Pin Enable
0 CMPO is not available on the associated CMPO output pin. If the comparator does not own the pin,
this field has no effect.
1
CMPO is available on the associated CMPO output pin.
The comparator output (CMPO) is driven out on the associated CMPO output pin if the comparator
owns the pin. If the comparator does not own the field, this bit has no effect.
0
EN
Comparator Module Enable
Enables the Analog Comparator module. When the module is not enabled, it remains in the off state, and
consumes no power. When the user selects the same input from analog mux to the positive and negative
port, the comparator is disabled automatically.
0 Analog Comparator is disabled.
1 Analog Comparator is enabled.
Memory map/register definitions
KL25 Sub-Family Reference Manual, Rev. 3, September 2012
516 Freescale Semiconductor, Inc.
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