19
MG12/4FX
LSI PIN DESCRIPTION
(LSI 端子機能表)
Pin
Pin
No.
NAME
I/O
FUNCTION
No.
NAME
I/O
FUNCTION
1
VSS
-
VSS
65
VSS
-
VSS
2
TESTN
I
Input for TEST
66
IOVDD
-
IOVDD +3.3V
3
PLLBPN
I
PLL bypass select
67
LBN/LWRN/PF6
O
External memory lower-byte enable
4
PLLVDD
-
2.5V
68
UBN/UWRN/PF7
O
External memory upper-byte enable
5
CIN
-
Capacitor terminal for PLL
69
RDN/PF4
O
External memory read enable
6
PLLVSS
-
PLLVSS
70
MD00
I/O
7
TRSTN
I
71
MD08
I/O
8
TMS
I
72
MD01
I/O
9
TCK
I
JTAG input
73
MD09
I/O
External memory data bus
10
TDI
I
74
MD02
I/O
11
TD0
O
JTAG output
75
MD10
I/O
12
XI
I
Crystal oscillator
76
MD03
I/O
13
XO
O
Crystal oscillator
77
VSS
-
VSS
14
VSS
-
VSS
78
MD11
I/O
15
VDD
-
VDD +2.5V
79
MD04
I/O
16
ICN
I
Hardware reset
80
MD12
I/O
17
ECSN
I
CPU I/F chip select
81
MD05
I/O
18
EWRN/PD5
I
CPU I/F write enable
82
MD13
I/O
External memory data bus
19
ERDN/PD4
I
CPU I/F read enable
83
MD06
I/O
20
EA3/PD3
I
CPU I/F address bus
84
MD14
I/O
21
EA2/PD2
I
85
MD07
I/O
22
EA1/PD1
I
86
MD15
I/O
23
EA0/PD0
I
87
WRN/PF5
O
External memory write enable
24
IOVDD
-
IOVDD +3.3V
88
VSS
-
VSS
25
ED0/PC0
I/O
CPU I/F data bus
89
VDD
-
VDD +2.5V
26
ED1/PC1
I/O
90
IOVDD
-
IOVDD +3.3V
27
ED2/PC2
I/O
91
MA17
O
28
ED3/PC3
I/O
92
MA16
O
29
ED4/PC4
I/O
93
MA15
O
30
ED5/PC5
I/O
94
MA14
O
31
ED6/PC6
I/O
95
MA13
O
32
ED7/PC7
I/O
96
MA12
O
33
VSS
-
VSS
97
MA11
O
External memory address bus
34
IRQ0N/PH0
I
Interrupt input
98
MA10
O
35
TxD0
O
Serial output
99
MA09
O
36
RxD0
I
serial input
100
MA08
O
37
TxD1/PG2
O
Serial output
101
MA07
O
38
RxD1/PH1
I
serial input
102
MA06
O
39
SCLK1/PH2
I
External synchronization clock
103
MA05
O
Serial output
104
VSS
-
VSS
serial input
105
MA04
O
Bit clock output
106
MA03
O
External memory address bus
Word clock output
107
MA02
O
Clock output
108
MA01
O
VSS
109
CS0N/PG0
O
External memory chip select
VDD +2.5V
110
MA18
O
IOVDD +3.3V
111
MA19
O
External memory address bus
External memory address bus
I/O port
112
MA21/PF1
O
113
MA22/PF2
O
114
MA20
O
115
MA23/PF3
O
116
CS1N/PG1
O
External memory chip select
53
PA5
I/O
117
MA00/PF0
O
54
PA6
I/O
118
VSS
-
VSS
55
PA7
I/O
119
VDD
-
VDD +2.5V
56
VSS
-
VSS
120
IOVDD
-
IOVDD +3.3V
57
PB0
I/O
I/O port
121
CS2N/PE0
O
58
PB1
I/O
122
CS3N/PE1
O
59
PB2
I/O
123
CS4N/CASN/PE2
O
60
PB3
I/O
124
CS5N/PE3
O
61
PB4
I/O
125
CS50RDN/PE4
O
External memory chip select
62
PB5
I/O
126
CS51WRN/PE5
O
63
PB6
I/O
127
CS52WRN/PE6
O
64
PB7/SYI
I/O
128
CS53WRN/RASN/PE7
O
YMW767-V (X3271A00) CPU
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