PIC16F688

Manufacturer Part NumberPIC16F688
ManufacturerMicrochip Technology Inc.
PIC16F688 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
Page 111
112
Page 112
113
Page 113
114
Page 114
115
Page 115
116
Page 116
117
Page 117
118
Page 118
119
Page 119
120
Page 120
121
122
123
124
125
126
127
128
129
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
Page 116/202:

BROWN-OUT SITUATIONS

Download datasheet (4Mb)Embed
PrevNext
PIC16F688
11.2.4
BROWN-OUT RESET (BOR)
The BOREN0 and BOREN1 bits in the Configuration
Word register selects one of four BOR modes. Two
modes have been added to allow software or hardware
control of the BOR enable. When BOREN<1:0> = 01,
the SBOREN bit of the PCON register enables/disables
the BOR, allowing it to be controlled in software. By
selecting BOREN<1:0>, the BOR is automatically
disabled in Sleep to conserve power and enabled on
wake-up. In this mode, the SBOREN bit is disabled.
See
Register 11-1
for
the
Configuration
definition.
If V
falls below V
for greater than parameter
DD
BOD
(T
) (see Section 14.0 “Electrical Specifica-
BOD
tions”), the Brown-out situation will reset the device.
FIGURE 11-3:

BROWN-OUT SITUATIONS

V
DD
Internal
Reset
V
DD
Internal
Reset
V
DD
Internal
Reset
Note 1: 64 ms delay only if PWRTE bit is programmed to ‘0’.
DS41203D-page 114
This will occur regardless of V
not insured to occur if V
than parameter (T
).
BOD
On any Reset (Power-on, Brown-out Reset, Watchdog
Timer, etc.), the chip will remain in Reset until V
above V
(see Figure 11-3). The Power-up Timer
BOD
will now be invoked, if enabled and will keep the chip in
Reset an additional 64 ms.
Note:
The Power-up Timer is enabled by the
PWRTE bit in the Configuration Word
Word
register.
If V
drops below V
DD
BOD
running, the chip will go back into a Brown-out Reset
and the Power-up Timer will be re-initialized. Once V
rises above V
, the Power-up Timer will execute a
BOD
64 ms Reset.
(1)
64 ms
< 64 ms
(1)
64 ms
(1)
64 ms
slew rate. A Reset is
DD
falls below V
for less
DD
BOD
rises
DD
while the Power-up Timer is
DD
V
BOD
V
BOD
V
BOD
© 2007 Microchip Technology Inc.