W3DG7232V-D2
White Electronic Designs
PRELIMINARY*
256MB – 32Mx72 SDRAM, REGISTER and SPD, w/PLL
FEATURES
DESCRIPTION
Burst Mode Operation
The W3DG7232V is a 32Mx72 synchronous DRAM module
which consists of nine 32Meg x 8 SDRAM components
in TSOP II package, two 18 bit Drive ICs for input control
signal and one 2Kb EEPROM in an 8 pin TSSOP package
for Serial Presence Detect which are mounted on a 168
pin DIMM multilayer FR4 Substrate.
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
* This product is under development, is not qualified or characterized and is subject to
change without notice.
168 Pin DIMM JEDEC
NOTE: Consult factory for availability of:
• Lead-Free Products
• Vendor source control options
• Industrial temperature options
PIN CONFIGURATIONS (FRONT SIDE/BACK SIDE)
PIN NAMES
A0 – A12
BA0-1
DQ0-63
CB0-7
CK0
Address Input (Multiplexed)
Select Bank
PIN FRONT PIN
BACK
DQMB1
CS0#
DNU
VSS
PIN FRONT PIN
BACK
VSS
PIN
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
BACK
DQMB5
*CS1#
RAS#
VSS
PIN
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
BACK
DQ50
DQ51
VCC
1
VSS
DQ0
DQ1
DQ2
DQ3
VCC
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
DQ18
DQ19
VCC
85
86
2
DQ32
DQ33
DQ34
DQ35
VCC
Data Input/Output
Check Bit (Data-In/Data-Out)
Clock Input
3
87
4
DQ20
NC
88
DQ52
NC
5
A0
89
A1
CKE0
Clock Enable Input
6
A2
*VREF
*CKE1
VSS
90
A3
*VREF
REGE
VSS
CS0#, CS2# Chip Select Input
7
DQ4
DQ5
DQ6
DQ7
DQ8
VSS
A4
91
DQ36
DQ37
DQ38
DQ39
DQ40
VSS
A5
RAS#
CAS#
WE#
DQMB0-7
VCC
Row Address Strobe
Column Address Strobe
Write Enable
8
A6
92
A7
9
A8
DQ21
DQ22
DQ23
VSS
93
A9
DQ53
DQ54
DQ55
VSS
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
A10/AP
BA1
94
BA0
95
A11
DQMB
VCC
96
VCC
Power Supply (3.3V)
Ground
DQ9
DQ10
DQ11
DQ12
DQ13
VCC
VCC
DQ24
DQ25
DQ26
DQ27
VCC
97
DQ41
DQ42
DQ43
DQ44
DQ45
VCC
*CK1
A12
DQ56
DQ57
DQ58
DQ59
VCC
VSS
CK0
VSS
98
*VREF
REGE
SDA
Power Supply for Reference
Register Enable
Serial Data I/O
Serial Clock
99
VSS
DNU
CS2#
DQMB2
DQMB3
DNU
VCC
100
101
102
103
104
105
106
107
108
109
110
111
CKE0
*CS3#
DQMB6
DQMB7
*A13
VCC
DQ28
DQ29
DQ30
DQ31
VSS
DQ60
DQ61
DQ62
DQ63
VSS
SCL
DQ14
DQ15
CB0
CB1
VSS
DQ46
DQ47
CB4
SA0-2
DNU
NC
Address in EEPROM
Do Not Use
No Connect
NC
CB5
NC
*
These pins are not used in this module.
** These pins should be NC in the system which does
not support SPD.
NC
*CK2
NC
VSS
NC
*CK3
NC
NC
CB2
CB3
VSS
NC
CB6
CB7
VSS
NC
NC
NC
**SA0
**SA1
**SA2
VCC
VCC
**SDA
**SCL
VCC
VCC
WE#
DQMB0
DQ16
DQ17
CAS#
DQ48
DQ49
112 DQMB4 140
February 2005
Rev. 1
1
White Electronic Designs Corporation • (602) 437-1520 • www.whiteedc.com