2013 Microchip Technology Inc.
Advance Information
DS33030A-page 239
PIC24FV16KM204 FAMILY
23.0 COMPARATOR VOLTAGE
REFERENCE
23.1
Configuring the Comparator
Voltage Reference
The comparator voltage reference module is controlled
through the CVRCON register (
). The
comparator voltage reference provides a range of
output voltages with 32 distinct levels.
The comparator voltage reference supply voltage can
come from either V
DD
and V
SS
, or the external V
REF
+
and V
REF
-. The voltage source is selected by the
CVRSS bit (CVRCON<5>).
The settling time of the comparator voltage reference
must be considered when changing the CV
REF
output.
FIGURE 23-1:
COMPARATOR VOLTAGE REFERENCE BLOCK DIAGRAM
Note:
This data sheet summarizes the features
of this group of PIC24F devices. It is not
intended to be a comprehensive refer-
ence source. For more information on the
Comparator Voltage Reference, refer to
the
“PIC24F Family Reference Manual”
,
Section 20. “Comparator Voltage
Reference Module”
(DS39709).
32
-to
-1 MU
X
CVR<3:0>
R
CVREN
CVRSS =
0
AV
DD
V
REF
+
CVRSS =
1
CVRSS =
0
V
REF
-
CVRSS =
1
R
R
R
R
R
R
32 Steps
CV
REF
AV
SS
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