White Electronic Designs
256MB- 32Mx64 SDRAM UNBUFFERED
FEATURES
Burst Mode Operation
Auto and Self Refresh capability
LVTTL compatible inputs and outputs
Serial Presence Detect with EEPROM
Fully synchronous: All signals are registered on the positive
edge of the system clock
Programmable Burst Lengths: 1, 2, 4, 8 or Full Page
3.3V
±
0.3V Power Supply
144 Pin SO-DIMM JEDEC
WED3DG6432V-D1
DESCRIPTION
The WED3DG6432V is a 32Mx64 synchronous DRAM
module which consists of eight 16Mx16 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.
* This product is subject to change without notice.
PIN CONFIGURATIONS (FRONT SIDE/BACK SIDE)
PINOUT
PIN
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
41
43
45
47
49
FRONT
V
SS
DQ0
DQ1
DQ2
DQ3
V
CC
DQ4
DQ5
DQ6
DQ7
V
SS
DQM0
DQM1
V
CC
A0
A1
A2
V
SS
DQ8
DQ9
DQ10
DQ11
V
CC
DQ12
DQ13
PIN
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
46
48
50
BACK
V
SS
DQ32
DQ33
DQ34
DQ35
V
CC
DQ36
DQ37
DQ38
DQ39
V
SS
DQM4
DQM5
V
CC
A3
A4
A5
V
SS
DQ40
DQ41
DQ42
DQ43
V
CC
DQ44
DQ45
61
63
65
67
69
71
73
75
77
79
81
83
85
87
89
91
93
CK0
V
CC
RAS#
WE#
CS0#
CS1#
DNU
V
SS
NC
NC
V
CC
DQ16
DQ17
DQ18
DQ19
V
SS
DQ20
62
64
66
68
70
72
74
76
78
80
82
84
86
88
90
92
94
CKE0
V
CC
CAS#
CKE1
A12
*A13
CK1
V
SS
NC
NC
V
CC
DQ48
DQ49
DQ50
DQ51
V
SS
DQ52
PIN
51
53
55
57
59
FRONT
DQ14
DQ15
V
SS
NC
NC
PIN
52
54
56
58
60
BACK
DQ46
DQ47
V
SS
NC
NC
PIN
95
97
99
101
103
105
107
109
111
113
115
117
119
121
123
125
127
129
131
133
135
137
139
141
143
BACK
DQ21
DQ22
DQ23
V
CC
A6
A8
V
SS
A9
A10/AP
V
CC
DQM2
DQM3
V
SS
DQ24
DQ25
DQ26
DQ27
V
CC
DQ28
DQ29
DQ30
DQ31
V
SS
**SDA
V
CC
PIN
96
98
100
102
104
106
108
110
112
114
116
118
120
122
124
126
128
130
132
134
136
138
140
142
144
BACK
DQ53
DQ54
DQ55
V
CC
A7
BA0
V
SS
BA1
A11
V
CC
DQM6
DQM7
V
SS
DQ56
DQ57
DQ58
DQ59
V
CC
DQ60
DQ61
DQ62
DQ63
V
SS
**SCL
V
CC
PIN NAMES
A0 – A12
BA0-1
DQ0-63
CK0,CK1
CKE0,CKE1
CS0#,CS1#
RAS#
CAS#
WE#
DQM0-7
V
CC
V
SS
SDA
SCL
DNU
NC
Address Input (Multiplexed)
Select Bank
Data Input/Output
Clock Input
Clock Enable Input
Chip Select Input
Row Address Strobe
Column Address Strobe
Write Enable
DQM
Power Supply (3.3V)
Ground
Serial Data I/O
Serial Clock
Do Not Use
No Connect
VOLTAGE KEY
* These pins are not used in this module.
** 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.
Sept. 2002
Rev. 0
1
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com
WEDC [ WHITE ELECTRONIC DESIGNS CORPORATION ]
