Fujitsu FR81S User Manual
CHAPTER 1: OVERVIEW
9. Explanation of Pin Functions
FUJITSU SEMICONDUCTOR LIMITED
CHAPTER : OVERVIEW
FUJITSU SEMICONDUCTOR CONFIDENTIAL
75
9.1.14.
Pins of External Bus interface
Function
Pin
Name
Noise
Filter
Pin Number
64
80
100
120
144
176
External bus address bit0 output pin
A00
-
-
-
-
-
11
14
External bus address bit1 output pin
A01
-
-
-
-
-
12
15
External bus address bit2 output pin
A02
-
-
-
-
-
13
17
External bus address bit3 output pin
A03
-
-
-
-
-
14
18
External bus address bit4 output pin
A04
-
-
-
-
-
15
19
External bus address bit5 output pin
A05
-
-
-
-
-
16
20
External bus address bit6 output pin
A06
-
-
-
-
-
17
21
External bus address bit7 output pin
A07
-
-
-
-
-
20
24
External bus address bit8 output pin
A08
-
-
-
-
-
21
25
External bus address bit9 output pin
A09
-
-
-
-
-
22
26
External bus address bit10 output pin
A10
-
-
-
-
-
23
29
External bus address bit11 output pin
A11
-
-
-
-
-
24
30
External bus address bit12 output pin
A12
-
-
-
-
-
25
31
External bus address bit13 output pin
A13
-
-
-
-
-
26
32
External bus address bit14 output pin
A14
-
-
-
-
-
27
33
External bus address bit15 output pin
A15
-
-
-
-
-
28
34
External bus address bit16 output pin
A16
-
-
-
-
-
29
35
External bus address bit17 output pin
A17
-
-
-
-
-
30
37
External bus address bit18 output pin
A18
-
-
-
-
-
31
39
External bus address bit19 output pin
A19
-
-
-
-
-
32
40
External bus address bit20 output pin
A20
-
-
-
-
-
33
41
External bus address bit21 output pin
A21
-
-
-
-
-
34
42
External bus address strobe output pin
ASX
-
-
-
-
-
5
7
External bus system clock output pin
SYSCLK
-
-
-
-
-
35
43
External bus chip select 0 output pin
CS0X
-
-
-
-
-
6
8
External bus chip select 1 output pin
CS1X
-
-
-
-
-
7
9
External bus chip select 2 output pin(0)
CS2X
-
-
-
-
-
38
46
External bus chip select 3 output pin(0)
CS3X
-
-
-
-
-
39
49
External bus data bit16 I/O pin
D16
No
-
-
-
-
131
159
External bus data bit17 I/O pin
D17
No
-
-
-
-
132
160
External bus data bit18 I/O pin
D18
No
-
-
-
-
133
161
External bus data bit19 I/O pin
D19
No
-
-
-
-
134
162
External bus data bit20 I/O pin
D20
No
-
-
-
-
135
163
External bus data bit21 I/O pin
D21
No
-
-
-
-
136
165
External bus data bit22 I/O pin
D22
No
-
-
-
-
137
167
External bus data bit23 I/O pin
D23
No
-
-
-
-
138
168
External bus data bit24 I/O pin
D24
No
-
-
-
-
139
170
External bus data bit25 I/O pin
D25
No
-
-
-
-
140
171
External bus data bit26 I/O pin
D26
No
-
-
-
-
141
172
External bus data bit27 I/O pin
D27
No
-
-
-
-
142
174
External bus data bit28 I/O pin
D28
No
-
-
-
-
143
175
External bus data bit29 I/O pin
D29
No
-
-
-
-
2
2
External bus data bit30 I/O pin
D30
No
-
-
-
-
3
3
External bus data bit31 I/O pin
D31
No
-
-
-
-
4
5
External bus write strobe 0 output pin
WR0X
-
-
-
-
-
9
11
MB91520 Series
MN705-00010-1v0-E
74