參數(shù)資料
型號: PIC16CR620A
廠商: Microchip Technology Inc.
元件分類: 8位微控制器
英文描述: EPROM-Based 8-Bit CMOS Microcontroller
中文描述: 存儲器為基礎(chǔ)的8位CMOS微控制器
文件頁數(shù): 38/108頁
文件大小: 645K
代理商: PIC16CR620A
PIC16C62X
DS30235G-page 38
Preliminary
1998 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 7-2 shows the eight possible modes. The
TRISA register controls the data direction of the com-
parator 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 in
Table 12-2.
Note:
Comparator interrupts should be disabled
during a comparator mode change other-
wise a false interrupt may occur.
FIGURE 7-2:
COMPARATOR I/O OPERATING MODES
-
+
C1
V
IN
-
V
IN
+
Off
(Read as '0')
RA0/AN0
RA3/AN3
A
A
CM<2:0> = 000
-
+
C2
V
IN
-
V
IN
+
Off
(Read as '0')
RA1/AN1
RA2/AN2
A
A
-
+
C1
V
IN
-
V
IN
+
Off
(Read as '0')
RA0/AN0
RA3/AN3
D
D
CM<2:0> = 111
-
+
C2
V
IN
-
V
IN
+
Off
(Read as '0')
RA1/AN1
RA2/AN2
D
D
-
+
C1
V
IN
-
V
IN
+
C1OUT
RA0/AN0
RA3/AN3
A
A
-
+
C2
V
IN
-
V
IN
+
C2OUT
RA1/AN1
RA2/AN2
A
A
CM<2:0> = 100
-
+
C1
V
IN
-
V
IN
+
C1OUT
RA0/AN0
RA3/AN3
A
A
-
+
C2
V
IN
-
V
IN
+
C2OUT
RA1/AN1
RA2/AN2
A
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
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
A
CM<2:0> = 110
-
+
C1
V
IN
-
V
IN
+
Off
(Read as '0')
RA0/AN0
RA3/AN3
D
D
CM<2:0> = 101
-
+
C2
V
IN
-
V
IN
+
C2OUT
RA1/AN1
RA2/AN2
A
A
-
+
C1
V
IN
-
CIS=1
V
IN
+
C1OUT
RA0/AN0
RA3/AN3
A
A
-
+
C2
V
IN
-
V
IN
+
C2OUT
RA1/AN1
RA2/AN2
A
A
CM<2:0> = 001
CIS=0
Comparators Reset
Two Independent Comparators
Two Common Reference Comparators
One Independent Comparator
Three Inputs Multiplexed to
Two Comparators
Two Common Reference Comparators with Outputs
Four Inputs Multiplexed to
Two Comparators
Comparators Off
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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