Microchip Technology MA240029 データシート
2010-2011 Microchip Technology Inc.
DS39996F-page 319
PIC24FJ128GA310 FAMILY
bit 4
CREF:
Comparator Reference Select bits (non-inverting input)
1
= Non-inverting input connects to the internal CV
REF
voltage
0
= Non-inverting input connects to the C
X
INA pin
bit 3-2
Unimplemented:
Read as ‘0’
bit 1-0
CCH<1:0>:
Comparator Channel Select bits
11
= Inverting input of the comparator connects to the internal selectable reference voltage specified
by the CVREFM<1:0> bits in the CVRCON register
10
= Inverting input of the comparator connects to the C
X
IND pin
01
= Inverting input of the comparator connects to the C
X
INC pin
00
= Inverting input of the comparator connects to the C
X
INB pin
REGISTER 25-1:
CMxCON: COMPARATOR x CONTROL REGISTERS
(COMPARATORS 1 THROUGH 3) (CONTINUED)
(COMPARATORS 1 THROUGH 3) (CONTINUED)
REGISTER 25-2:
CMSTAT: COMPARATOR MODULE STATUS REGISTER
R/W-0
U-0
U-0
U-0
U-0
R-0, HSC
R-0, HSC
R-0, HSC
CMIDL
—
—
—
—
C3EVT
C2EVT
C1EVT
bit 15
bit 8
U-0
U-0
U-0
U-0
U-0
R-0, HSC
R-0, HSC
R-0, HSC
—
—
—
—
—
C3OUT
C2OUT
C1OUT
bit 7
bit 0
Legend:
HSC = Hardware Settable/Clearable bit
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘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
Unimplemented:
Read as ‘0’
bit 10
C3EVT:
Comparator 3 Event Status bit (read-only)
Shows the current event status of Comparator 3 (CM3CON<9>).
bit 9
C2EVT:
Comparator 2 Event Status bit (read-only)
Shows the current event status of Comparator 2 (CM2CON<9>).
bit 8
C1EVT:
Comparator 1 Event Status bit (read-only)
Shows the current event status of Comparator 1 (CM1CON<9>).
bit 7-3
Unimplemented:
Read as ‘0’
bit 2
C3OUT:
Comparator 3 Output Status bit (read-only)
Shows the current output of Comparator 3 (CM3CON<8>).
bit 1
C2OUT:
Comparator 2 Output Status bit (read-only)
Shows the current output of Comparator 2 (CM2CON<8>).
bit 0
C1OUT:
Comparator 1 Output Status bit (read-only)
Shows the current output of Comparator 1 (CM1CON<8>).