參數(shù)資料
型號: PIC16C622T-20I/SO
元件分類: 微控制器/微處理器
英文描述: 8-BIT, OTPROM, 20 MHz, RISC MICROCONTROLLER, PDSO18
封裝: 0.300 INCH, PLASTIC, MS-013, SO-18
文件頁數(shù): 64/128頁
文件大?。?/td> 3677K
代理商: PIC16C622T-20I/SO
PIC16C62X
DS30235J-page 38
2003 Microchip Technology Inc.
7.1
Comparator Configuration
There
are
eight
modes
of
operation
for
the
comparators. The CMCON register is used to select
the mode. Figure 7-1 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 the specified mode change delay shown
FIGURE 7-1:
COMPARATOR I/O OPERATING MODES
Note:
Comparator interrupts should be disabled
during a Comparator mode change other-
wise a false interrupt may occur.
-
+
C1
V
IN-
V
IN+
Off
(Read as '0')
RA0/AN0
RA3/AN3
A
CM<2:0> = 000
-
+
C2
V
IN-
V
IN+
Off
(Read as '0')
RA1/AN1
RA2/AN2
A
-
+
C1
V
IN-
V
IN+
Off
(Read as '0')
RA0/AN0
RA3/AN3
D
CM<2:0> = 111
-
+
C2
V
IN-
V
IN+
Off
(Read as '0')
RA1/AN1
RA2/AN2
D
-
+
C1
V
IN-
V
IN+
C1OUT
RA0/AN0
RA3/AN3
A
-
+
C2
V
IN-
V
IN+
C2OUT
RA1/AN1
RA2/AN2
A
CM<2:0> = 100
-
+
C1
V
IN-
V
IN+
C1OUT
RA0/AN0
RA3/AN3
A
-
+
C2
V
IN-
V
IN+
C2OUT
RA1/AN1
RA2/AN2
A
From V
REF Module
-
+
C1
V
IN-
V
IN+
C1OUT
RA0/AN0
RA3/AN3
A
D
-
+
C2
V
IN-
V
IN+
C2OUT
RA1/AN1
RA2/AN2
A
CM<2:0> = 011
RA4
Open Drain
-
+
C1
V
IN-
V
IN+
C1OUT
RA0/AN0
RA3/AN3
A
D
-
+
C2
V
IN-
V
IN+
C2OUT
RA1/AN1
RA2/AN2
A
CM<2:0> = 110
-
+
C1
V
IN-
V
IN+
Off
(Read as '0')
RA0/AN0
RA3/AN3
D
CM<2:0> = 101
-
+
C2
V
IN-
V
IN+
C2OUT
RA1/AN1
RA2/AN2
A
-
+
C1
V
IN-
V
IN+
C1OUT
RA0/AN0
RA3/AN3
A
-
+
C2
V
IN-
V
IN+
C2OUT
RA1/AN1
RA2/AN2
A
CM<2:0> = 001
CIS=0
CIS=1
Comparators Reset
Two Independent Comparators
Two Common Reference Comparators
One Independent Comparator
Three Inputs Multiplexed to
Two Common Reference Comparators with Outputs
Four Inputs Multiplexed to
Comparators Off
Two Comparators
CM<2:0> = 010
CIS=0
CIS=1
CIS=0
CIS=1
A = Analog Input, Port Reads Zeros Always
D = Digital Input
CIS = CMCON<3>, Comparator Input Switch
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