PIC16F88

Manufacturer Part NumberPIC16F88
ManufacturerMicrochip Technology Inc.
PIC16F88 datasheet
 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
Page 121
122
Page 122
123
Page 123
124
Page 124
125
Page 125
126
Page 126
127
Page 127
128
Page 128
129
Page 129
130
Page 130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
Page 123/228:

COMPARATOR MODULE

Download datasheet (5Mb)Embed
PrevNext
13.0

COMPARATOR MODULE

The
comparator
module
contains
comparators. The inputs to the comparators are
multiplexed with I/O port pins RA0 through RA3, while
the outputs are multiplexed to pins RA3 and RA4. The
on-chip Voltage Reference (Section 14.0 “Comparator
Voltage Reference Module”) can also be an input to
the comparators.
REGISTER 13-1:
CMCON: COMPARATOR MODULE CONTROL REGISTER (ADDRESS 9Ch)
R-0
C2OUT
bit 7
bit 7
C2OUT: Comparator 2 Output bit
When C2INV = 0:
1 = C2 V
+ > C2 V
IN
0 = C2 V
+ < C2 V
IN
When C2INV = 1:
1 = C2 V
+ < C2 V
IN
0 = C2 V
+ > C2 V
IN
bit 6
C1OUT: Comparator 1 Output bit
When C1INV = 0:
1 = C1 V
+ > C1 V
IN
0 = C1 V
+ < C1 V
IN
When C1INV = 1:
1 = C1 V
+ < C1 V
IN
0 = C1 V
+ > C1 V
IN
bit 5
C2INV: Comparator 2 Output Inversion bit
1 = C2 output inverted
0 = C2 output not inverted
bit 4
C1INV: Comparator 1 Output Inversion bit
1 = C1 output inverted
0 = C1 output not inverted
bit 3
CIS: Comparator Input Switch bit
When CM2:CM0 = 001:
1 = C1 V
- connects to RA3
IN
0 = C1 V
- connects to RA0
IN
When CM2:CM0 = 010:
1 = C1 V
- connects to RA3
IN
C2 V
- connects to RA2
IN
0 = C1 V
- connects to RA0
IN
C2 V
- connects to RA1
IN
bit 2-0
CM<2:0>: Comparator Mode bits
Legend:
R = Readable bit
-n = Value at POR
 2005 Microchip Technology Inc.
The CMCON register (Register 13-1) controls the
comparator input and output multiplexors. A block
two
analog
diagram of the various comparator configurations is
shown in Figure 13-1.
R-0
R/W-0
R/W-0
R/W-0
C1OUT
C2INV
C1INV
-
IN
-
IN
-
IN
-
IN
-
IN
-
IN
-
IN
-
IN
W = Writable bit
U = Unimplemented bit, read as ‘0’
‘1’ = Bit is set
‘0’ = Bit is cleared
PIC16F87/88
R/W-1
R/W-1
R/W-1
CIS
CM2
CM1
CM0
bit 0
x = Bit is unknown
DS30487C-page 121