Fujitsu FR81S User Manual
CHAPTER 1: OVERVIEW
9. Explanation of Pin Functions
FUJITSU SEMICONDUCTOR LIMITED
CHAPTER : OVERVIEW
FUJITSU SEMICONDUCTOR CONFIDENTIAL
83
9.1.18.
Other Pins
Function
Pin
Name
Noise
Filter
Pin Number
64
80
100
120
144
176
+5.0v power supply pin
VCC
-
32
20
25
30
36
44
-
64
40
50
60
72
88
-
-
61
76
91
109
133
-
-
80
100
120
144
176
GND pin
VSS
-
1
1
1
1
1
1
-
33
21
26
31
37
45
-
55
41
51
61
73
89
-
59
60
75
90
108
132
-
-
69
85
101
120
148
-
-
73
92
109
129
157
External capacity connection output pin
C
-
60
74
93
110
130
158
Main clock oscillation input pin
X0
Yes
53
67
83
99
118
146
Main clock oscillation output pin
X1
-
54
68
84
100
119
147
Sub clock oscillation input pin
X0A
Yes
57
71
87
103
122
150
Sub clock oscillation output pin
X1A
-
56
70
86
102
121
149
Mode pin 0
MD0
-
51
65
81
97
116
144
Mode pin 1
MD1
-
52
66
82
98
117
145
Interrupt input pin without mask
NMIX
Yes
44
54
67
79
95
115
DEBUGIF
I/O pin for debug (OCD)
DEBUGIF
Yes
49
62
77
92
110
134
External reset input pin
RSTX
Yes
58
72
88
104
123
151
MB91520 Series
MN705-00010-1v0-E
82