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Figure 3.1
SYM53C040, 160-Pin QFP Option
VSS_IO
1
A8
2
A9
3
A10
4
A11
5
A12
6
A13
7
A14
8
A15
9
PSEN/
10
ALE
11
VDD_IO
12
AD7
13
AD6
14
AD5
15
AD4
16
AD3
17
AD2
18
AD1
19
AD0
20
VSS_IO
21
SCL0
22
SDA0
23
VDD_IO
24
MPIO0_0
25
MPIO0_1
26
MPIO0_2
27
MPIO0_3
28
MPIO0_4
29
MPIO0_5
30
MPIO0_6
31
MPIO0_7
32
VSS_IO
33
MPLED0_0
34
MPLED0_1
35
MPLED0_2
36
MPLED0_3
37
VSS_IO
38
MPLED0_4
39
MPLED0_5
40
3-2
SYM53C040
160-Pin QFP
Signal Descriptions
Top View
VSS_SCSI
120
SBSY+
119
SBSY−
118
SACK+
117
SACK−
116
VDD_SCSI
115
SRST+
114
SRST−
113
SMSG+
112
SMSG−
111
VSS_SCSI
110
SSEL+
109
SSEL−
108
SCD+
107
SCD−
106
VDD_SCSI
105
SREQ+
104
SREQ−
103
SIO+
102
101
SIO−
VSS_SCSI
100
SHID0+
99
SHID0−
98
SHID1+
97
96
SHID1−
95
SHID2+
SHID2−
94
93
DIFFSENS
92
TDI
91
TCK
90
TMS
TDO
89
88
VDD_IO
MPIO3_3
87
86
MPIO3_2
85
MPIO3_1
84
MPIO3_0
83
VSS_IO
82
MPLED2_7
81
MPLED2_6
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