Datasheet

 2010 Microchip Technology Inc. DS39951C-page 229
PIC24FJ64GA104 FAMILY
22.0 TRIPLE COMPARATOR
MODULE
The triple comparator module provides three dual input
comparators. The inputs to the comparator can be con-
figured to use any one of four external analog inputs, as
well as voltage reference inputs from the voltage
reference generator and band gap reference.
The comparator outputs may be directly connected to
the CxOUT pins. When the respective COE equals ‘1’,
the I/O pad logic makes the unsynchronized output of
the comparator available on the pin.
A simplified block diagram of the module in shown in
Figure 22-1. Diagrams of the possible individual
comparator configurations are shown in Figure 22-2.
Each comparator has its own control register,
CMxCON (Register 22-1), for enabling and configuring
its operation. The output and event status of all three
comparators are provided in the CMSTAT register
(Register 22-2).
FIGURE 22-1: TRIPLE COMPARATOR MODULE BLOCK DIAGRAM
Note: This data sheet summarizes the features
of this group of PIC24F devices. It is not
intended to be a comprehensive reference
source. For more information, refer to the
associated “PIC24F Family Reference
Manual”, Section 46. “Scalable
Comparator Module” (DS39734)
C1
V
IN-
V
IN+
CXINB
C
XINC
C
XINA
C
XIND
CV
REF+
CV
REF-
C2
V
IN-
V
IN+
C3
V
IN-
V
IN+
COE
C1OUT
Pin
CPOL
Trigger/Interrupt
Logic
CEVT
EVPOL<1:0>
COUT
Input
Select
Logic
CCH<1:0>
CREF
COE
C2OUT
Pin
CPOL
Trigger/Interrupt
Logic
CEVT
EVPOL<1:0>
COUT
COE
C3OUT
Pin
CPOL
Trigger/Interrupt
Logic
CEVT
EVPOL<1:0>
COUT