Datasheet

dsPIC33EPXXXGP50X, dsPIC33EPXXXMC20X/50X AND PIC24EPXXXGP/MC20X
DS70000657H-page 356  2011-2013 Microchip Technology Inc.
FIGURE 25-2: COMPARATOR MODULE BLOCK DIAGRAM (MODULE 4)
FIGURE 25-3: OP AMP/COMPARATOR VOLTAGE REFERENCE BLOCK DIAGRAM
CMP4
Blanking
Function
Digital
Filter
(see Figure 25-4)
(see Figure 25-5)
–
+
V
IN+
C4OUT
Trigger
Output
C4IN1+
CV
REFIN
VIN-
1
0
11
00
CCH<1:0> (CM4CON<1:0>)
OA3/AN6
C4IN1-
CREF (CMxCON<4>)
01
10
OA1/AN3
OA2/AN0
8R
R
CVREN
CVRSS = 0
AV
DD
VREF+
CVRSS = 1
(1)
8R
R
R
R
R
R
R
16 Steps
CVRR
CVREF1O
CVR3 CVR2 CVR1 CVR0
CVRCON<3:0>
AV
SS
CVRSRC
CVR1OE
CVREFIN
VREFSEL
CVREF2O
(2)
CVR2OE
Note 1: In order to operate with CVRSS = 1, at least one of the comparator modules must be enabled.
2: This reference is (AV
DD + AVSS)/2.
AVSS
AVDD
1
0
16-to-1 MUX
(CVRCON<6>)
(CVRCON<14>)
(CVRCON<10>)