PIC24FJ64GA104 FAMILY
REGISTER 22-1: CMxCON: COMPARATOR x CONTROL REGISTERS
(COMPARATORS 1 THROUGH 3) (CONTINUED)
bit 4
CREF: Comparator Reference Select bits (non-inverting input)
1= Non-inverting input connects to internal CVREF+ input reference voltage
0= Non-inverting input connects to CxINA pin
bit 3-2
bit 1-0
Unimplemented: Read as ‘0’
CCH<1:0>: Comparator Channel Select bits
11= Inverting input of comparator connects to CVREF- input reference voltage
10= Inverting input of comparator connects to CxIND pin
01= Inverting input of comparator connects to CxINC pin
00= Inverting input of comparator connects to CxINB pin
REGISTER 22-2: CMSTAT: COMPARATOR MODULE STATUS REGISTER
R/W-0
U-0
—
U-0
—
U-0
—
U-0
—
R-0
R-0
R-0
CMIDL
C3EVT
C2EVT
C1EVT
bit 15
bit 8
U-0
—
U-0
—
U-0
—
U-0
—
U-0
—
R-0
R-0
R-0
C3OUT
C2OUT
C1OUT
bit 7
bit 0
Legend:
R = Readable bit
-n = Value at POR
W = Writable bit
‘1’ = Bit is set
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared x = Bit is unknown
bit 15
CMIDL: Comparator Stop in Idle Mode bit
1= Discontinue operation of all comparators when device enters Idle mode
0= Continue operation of all enabled comparators in Idle mode
bit 14-11
bit 10
Unimplemented: Read as ‘0’
C3EVT: Comparator 3 Event Status bit (read-only)
Shows the current event status of Comparator 3 (CM3CON<9>).
C2EVT: Comparator 2 Event Status bit (read-only)
Shows the current event status of Comparator 2 (CM2CON<9>).
C1EVT: Comparator 1 Event Status bit (read-only)
Shows the current event status of Comparator 1 (CM1CON<9>).
Unimplemented: Read as ‘0’
bit 9
bit 8
bit 7-3
bit 2
C3OUT: Comparator 3 Output Status bit (read-only)
Shows the current output of Comparator 3 (CM3CON<8>).
C2OUT: Comparator 2 Output Status bit (read-only)
Shows the current output of Comparator 2 (CM2CON<8>).
C1OUT: Comparator 1 Output Status bit (read-only)
Shows the current output of Comparator 1 (CM1CON<8>).
bit 1
bit 0
DS39951C-page 232
2010 Microchip Technology Inc.
MICROCHIP [ MICROCHIP ]
