PIC12F629T-E/MD MICROCHIP [Microchip Technology], PIC12F629T-E/MD Datasheet - Page 39
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PIC12F629T-E/MD
Manufacturer Part Number
PIC12F629T-E/MD
Description
8-Pin, Flash-Based 8-Bit CMOS Microcontrollers
Manufacturer
MICROCHIP [Microchip Technology]
Datasheet
1.PIC12F629T-EMD.pdf
(136 pages)
- Current page: 39 of 136
- Download datasheet (2Mb)
6.2
There are eight modes of operation for the comparator.
The CMCON register, shown in Register 6-1, is used to
select the mode. Figure 6-2 shows the eight possible
modes. The TRISIO register controls the data direction
of the comparator pins for each mode. If the
Comparator mode is changed, the comparator output
level may not be valid for a specified period of time.
Refer to the specifications in Section 12.0 “Electri-
cal Specifications”.
FIGURE 6-2:
2010 Microchip Technology Inc.
Note:
Comparator Reset (POR Default Value - low power)
CM2:CM0 = 000
Comparator without Output
CM2:CM0 = 010
Comparator with Output and Internal Reference
CM2:CM0 = 011
Comparator with Output
CM2:CM0 = 001
A = Analog Input, ports always reads ‘0’
D = Digital Input
CIS = Comparator Input Switch (CMCON<3>)
GP1/CIN-
GP0/CIN+
GP2/COUT
GP1/CIN-
GP0/CIN+
GP2/COUT
GP1/CIN-
GP0/CIN+
GP2/COUT
GP1/CIN-
GP0/CIN+
GP2/COUT
Comparator Configuration
Comparator interrupts should be disabled
during a Comparator mode change. Other-
wise, a false interrupt may occur.
A
A
D
A
A
D
A
D
D
A
A
D
COMPARATOR I/O OPERATING MODES
From CV
REF
Module
Off (Read as ‘
COUT
COUT
COUT
0
’)
Comparator Off (Lowest power)
CM2:CM0 = 111
Comparator w/o Output and with Internal Reference
CM2:CM0 = 100
Multiplexed Input with Internal Reference and Output
CM2:CM0 = 101
Multiplexed Input with Internal Reference
CM2:CM0 = 110
GP1/CIN-
GP0/CIN+
GP2/COUT
GP1/CIN-
GP0/CIN+
GP2/COUT
GP1/CIN-
GP0/CIN+
GP2/COUT
GP1/CIN-
GP0/CIN+
GP2/COUT
D
D
D
D
A
D
D
A
A
A
A
D
PIC12F629/675
CIS =
CIS =
CIS =
CIS =
From CV
0
1
0
1
From CV
From CV
REF
Module
REF
REF
Off (Read as ‘
COUT
DS41190G-page 39
Module
Module
COUT
COUT
0
’)
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