W3DG647V-D1
White Electronic Designs
64MB- 8Mx64 SDRAM UNBUFFERED
FEATURES
DESCRIPTION
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PC100 and PC133 compatible
Burst Mode Operation
Auto and Self Refresh capability
LVTTL compatible inputs and outputs
Serial Presence Detect with EEPROM
The W3DG647V is a 8Mx64 synchronous DRAM module
which consists of eight 8Mx8 SDRAM components in
TSOP II package, and one 2Kb EEPROM in an 8 pin
TSSOP package for Serial Presence Detect which
are mounted on a 144 pin SO-DIMM multilayer FR4
Substrate.
Fully synchronous: All signals are registered on the positive
edge of the system clock
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Programmable Burst Lengths: 1, 2, 4, 8 or Full Page
* This product is subject to change without notice.
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3.3V 0.3V Power Supply
144 Pin SO-DIMM JEDEC
PIN NAMES
PIN CONFIGURATIONS (FRONT SIDE/BACK SIDE)
Pin
1
3
5
7
Front
VSS
Pin
2
4
6
8
Back
VSS
Pin
51
53
55
57
59
Front
DQ14
DQ15
VSS
NC
NC
Pin
52
54
56
58
60
Back
DQ46
DQ47
VSS
NC
NC
Pin
95
97
Front
DQ21
DQ22
DQ23
VCC
Pin
96
98
Back
DQ53
DQ54
DQ55
VCC
A7
BA0
VSS
BA1
A0 – A11
BA0-1
DQ0-63
CLK0,CK1
CKE0
CS0#
RAS#
CAS#
WE#
Address input (Multiplexed)
Select Bank
DQ0
DQ1
DQ2
DQ3
VCC
DQ32
DQ33
DQ34
DQ35
VCC
99
100
102
104
106
108
110
112
114
116
118
120
122
124
126
128
130
132
134
136
138
140
142
144
Data Input/Output
Clock input
101
103
105
107
109
111
113
115
117
119
121
123
125
127
129
131
133
135
137
139
141
143
9
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
46
48
50
A6
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
41
43
45
47
49
A8
VSS
A9
A10/AP
VCC
Clock Enable input
Chip select Input
Row Address Strobe
Column Address Strobe
Write Enable
VOLTAGE KEY
DQ4
DQ5
DQ6
DQ7
VSS
DQM0
DQM1
VCC
A0
A1
A2
VSS
DQ8
DQ9
DQ10
DQ11
VCC
DQ36
DQ37
DQ38
DQ39
VSS
DQM4
DQM5
VCC
A3
A4
A5
VSS
DQ40
DQ41
DQ42
DQ43
VCC
61
63
65
67
69
71
73
75
77
79
81
83
85
87
89
91
93
CLK0
VCC
62
64
66
68
70
72
74
76
78
80
82
84
86
88
90
92
94
CKE0
VCC
CAS#
NC
NC
NC
CK1
VSS
NC
NC
VCC
DQ48
DQ49
DQ50
DQ51
VSS
A11
VCC
RAS#
WE#
CS0#
NC
DQM2
DQM3
VSS
DQ24
DQ25
DQ26
DQ27
VCC
DQ28
DQ29
DQ30
DQ31
VSS
DQM6
DQM7
VSS
DQ56
DQ57
DQ58
DQ59
VCC
DQ60
DQ61
DQ62
DQ63
VSS
DQM0-7
VCC
DQM
DNU
VSS
Power Supply (3.3V)
Ground
NC
NC
VCC
VSS
SDA
Serial data I/O
Serial clock
DQ16
DQ17
DQ18
DQ19
VSS
SCL
DNU
Do not use
NC
No Connect
DQ12
DQ13
DQ44
DQ45
**SDA
VCC
**SCL
VCC
DQ20
DQ52
**These pins should be NC in the system which
does not support SPD.
White Electronic Designs Corp. reserves the right to change products or specifications without notice.
June 2003
Rev. 1
1
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com