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參數(shù)資料
| 型號(hào)： | 16F630 |
| 廠商： | Microchip Technology Inc. |
| 英文描述： | 14-Pin FLASH-Based 8-Bit CMOS Microcontrollers |
| 中文描述： | 14引腳基于閃存的8位CMOS微控制器 |
| 文件頁(yè)數(shù)： | 41/132頁(yè) |
| 文件大?。?/td> | 2651K |
| 代理商： | 16F630 |
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2003 Microchip Technology Inc.
DS40039C-page 39
PIC16F630/676
6.2
Comparator Configuration
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 TRISA 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.
FIGURE 6-2:
COMPARATOR I/O OPERATING MODES
Note:
Comparator interrupts should be disabled
during a Comparator mode change. Other-
wise, a false interrupt may occur.
Comparator Reset (POR Default Value - low power)
Comparator Off (Lowest power)
CM2:CM0 =
000
CM2:CM0 =
111
Comparator without Output
Comparator w/o Output and with Internal Reference
CM2:CM0 =
010
CM2:CM0 =
100
Comparator with Output and Internal Reference
Multiplexed Input with Internal Reference and Output
CM2:CM0 =
011
CM2:CM0 =
101
Comparator with Output
Multiplexed Input with Internal Reference
CM2:CM0 =
001
CM2:CM0 =
110
A = Analog Input, ports always reads ‘0’
D = Digital Input
CIS = Comparator Input Switch (CMCON<3>)
RA1/CIN-
RA0/CIN+
Off (Read as '0')
A
A
RA2/COUT
D
RA1/CIN-
RA0/CIN+
Off (Read as '0')
D
D
RA2/COUT
D
RA1/CIN-
RA0/CIN+
COUT
A
A
RA2/COUT
D
RA1/CIN-
RA0/CIN+
COUT
A
D
RA2/COUT
D
From CV
REF
Module
RA1/CIN-
RA0/CIN+
COUT
A
D
RA2/COUT
D
From CV
REF
Module
RA1/CIN-
RA0/CIN+
COUT
A
A
RA2/COUT
D
From CV
REF
Module
CIS = 0
CIS = 1
RA1/CIN-
RA0/CIN+
COUT
A
A
RA2/COUT
D
RA1/CIN-
RA0/CIN+
COUT
A
A
RA2/COUT
D
From CV
REF
Module
CIS = 0
CIS = 1
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