PIC16F684-ISL

Manufacturer Part NumberPIC16F684-ISL
ManufacturerMicrochip Technology Inc.
PIC16F684-ISL datasheets
 


Specifications of PIC16F684-ISL

CaseN/ANotesNEW
Date_code11+  
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
Page 91
92
Page 92
93
Page 93
94
Page 94
95
Page 95
96
Page 96
97
Page 97
98
Page 98
99
Page 99
100
Page 100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
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
Page 97/164

Download datasheet (3Mb)Embed
PrevNext
12.3.1
POWER-ON RESET
The on-chip POR circuit holds the chip in Reset until
V
has reached a high enough level for proper
DD
operation. To take advantage of the POR, simply
connect the MCLR pin through a resistor to V
will eliminate external RC components usually needed
to create Power-on Reset. A maximum rise time for
V
is required. See Section 15.0 “Electrical Specifi-
DD
cations” for details. If the BOD is enabled, the maxi-
mum rise time specification does not apply. The BOD
circuitry will keep the device in Reset until V
V
(see
Section 12.3.5
“Brown-Out
BOD
(BOD)”).
Note:
The POR circuit does not produce an
internal Reset when V
DD
re-enable the POR, V
must reach Vss
DD
for a minimum of 100 s.
When the device starts normal operation (exits the
Reset condition), device operating parameters (i.e.,
voltage, frequency, temperature, etc.) must be met to
ensure operation. If these conditions are not met, the
device must be held in Reset until the operating
conditions are met.
For additional information, refer to Application Note
AN607, “Power-up Trouble Shooting” (DS00607).
12.3.2
MCLR
PIC16F684 has a noise filter in the MCLR Reset path.
The filter will detect and ignore small pulses.
It should be noted that a WDT Reset does not drive
MCLR pin low.
The behavior of the ESD protection on the MCLR pin
has been altered from early devices of this family.
Voltages applied to the pin that exceed its specification
can result in both MCLR Resets and excessive current
beyond the device specification during the ESD event.
For this reason, Microchip recommends that the MCLR
pin no longer be tied directly to V
. The use of an RC
DD
network, as shown in Figure 12-2, is suggested.
An internal MCLR option is enabled by clearing the
MCLRE bit in the Configuration Word register. When
cleared, MCLR is internally tied to V
DD
weak pull-up is enabled for the MCLR pin. In-Circuit
Serial Programming is not affected by selecting the
internal MCLR option.
 2004 Microchip Technology Inc.
FIGURE 12-2:
V
DD
. This
DD
R1
1 k
C1
reaches
DD
0.1 F
(optional, not critical)
Detect
declines. To
12.3.3
POWER-ON RESET (POR)
The on-chip POR circuit holds the chip in Reset until
V
has reached a high enough level for proper
DD
operation. To take advantage of the POR, simply
connect the MCLR pin through a resistor to V
will eliminate external RC components usually needed
to create Power-on Reset. A maximum rise time for
V
is required. See Section 15.0 “Electrical Specifi-
DD
cations” for details. If the BOD is enabled, the maxi-
mum rise time specification does not apply. The BOD
circuitry will keep the device in Reset until V
V
(see
BOD
(BOD)”).
Note:
The POR circuit does not produce an
internal Reset when V
re-enable the POR, V
for a minimum of 100 s.
When the device starts normal operation (exits the
Reset condition), device operating parameters (i.e.,
voltage, frequency, temperature, etc.) must be met to
ensure operation. If these conditions are not met, the
device must be held in Reset until the operating
conditions are met.
For additional information, refer to Application Note
AN607, “Power-up Trouble Shooting” (DS00607).
and an internal
Preliminary
PIC16F684
RECOMMENDED
MCLR
CIRCUIT
PIC16F684
or greater)
MCLR
. This
DD
reaches
DD
Section 12.3.5
“Brown-Out
Detect
declines. To
DD
must reach Vss
DD
DS41202C-page 95