18
Pin No.
Pin Name
I/O
Pin Description
78
MDATA7
I/O
Memory data 7 input/output
79
LDQM
O
SDRAM LDQM output
80
UDQM
O
SDRAM UDQM output
81
VDD
—
Power supply pin (+3.3 V)
82
MWE
O
SDRAM write enable output
83
VSS
—
Ground
84
SD-CLK
O
SDRAM system clock output
85
SD-CAS
O
SDRAM column address output
86
SD-RAS
O
SDRAM row address output
87
VDD
—
Power supply pin (+3.3 V)
88
SD-CS1
O
SDRAM bank select 1 output (Not used in this set)
89
VSS
—
Ground
90
SD-CS0
O
SDRAM bank select 0 output
91
VDD2.5
—
Power supply pin (+2.5 V)
92
NC
O
Not used. (Open)
93
VSS
—
Ground
94
NC
O
Not used. (Open)
95
VDD
—
Power supply pin (+3.3 V)
96
MADDR9
O
Memory address 9 output
97
VSS
—
Ground
98 – 100
MADDR11, 8, 10
O
Memory address 11, 8 and 10 output
101
VDD
—
Power supply pin (+3.3 V)
102
MADDR7
O
Memory address 7 output
103
VSS
—
Ground
104 – 106
MADDR0, 6, 1
O
Memory address 0, 6 and 1 output
107
VDD
—
Power supply pin (+3.3 V)
108
MADDR5
O
Memory address 5 output
109
VSS
—
Ground
110 – 112
MADDR2, 4, 3
O
Memory address 2, 4 and 3 output
113
VDD
—
Power supply pin (+3.3 V)
114
MADDR12
O
Memory address 12 output
115
VSS
—
Ground
116
MADDR13
O
Memory address 13 output
117
VDD2.5
—
Power supply pin (+2.5 V)
O
Memory address 14 output
—
Ground
O
Memory address 15 – 17 output
—
Power supply pin (+3.3 V)
O
Memory address 18 output
—
Ground
O
Memory address 19 and 20 output
O
ROM chip select output
I
Fixed at L in this set.
O
Not used. (Open)
131, 132
GND
—
Ground
133
RESERVED
I
Fixed at L in this set.
134
VDD
—
Power supply pin (+3.3 V)
135
RESERVED
I
Fixed at L in this set.
136
VSS
—
Ground
137 – 141
RESERVED
I
Fixed at L in this set.
142, 143
VDATA0, 1
O
Video data bus 0 and 1 output
144
VDD2.5
—
Power supply pin (+2.5 V)
145
VDATA2
O
Video data bus 2 output
www. xiaoyu163. com
QQ 376315150
9
9
2
8
9
4
2
9
8
TEL 13942296513
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
