W3DG727V-D2
White Electronic Designs
64MB - 8Mx72 SDRAM UNBUFFERED
DESCRIPTION
FEATURES
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Burst Mode Operation
The W3DG727V is a 8Mx72 SDRAM module which consists
of nine 8Mx8 SDRAM components in TSOP II package, and
one 2K 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
* This datasheet describes a product that may or may not be under development and is
subject to change or cancellation without notice.
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Programmable Burst Lengths: 1, 2, 4, 8 or Full
Page
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3.3V 0.3V Power Supply
168 Pin DIMM JEDEC
PIN CONFIGURATIONS (FRONT SIDE/BACK SIDE)
PIN NAMES
Pin
1
Front
VSS
Pin
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
Front
DQM1
CS0#
DNU
VSS
A0
Pin
57
58
59
60
61
62
63
64
65
Front
DQ18
DQ19
VCC
Pin
85
86
87
88
89
90
Back
VSS
Pin
Back
Pin
Back
A0 – A11
BA0-1
DQ0-63
CB0-7
CLK0,CLK2
CKE0
CS0#,CS2#
RAS#
CAS#
WE#
DQM0-7
VCC
VSS
*VREF
SDA
Address input (Multiplexed)
Select Bank
Data Input/Output
Check bit (Data-in/data-out)
Clock input
Clock Enable input
Chip select Input
Row Address Strobe
Column Address Strobe
Write Enable
DQM
Power Supply (3.3V)
Ground
Power supply for reference
Serial data I/O
Serial clock
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
140
DQM5 141 DQ50
*CS1# 142 DQ51
2
DQ0
DQ1
DQ2
DQ3
VCC
DQ4
DQ5
DQ6
DQ7
DQ8
VSS
DQ32
DQ33
DQ34
DQ35
VCC
3
RAS#
VSS
A1
143 VCC
144 DQ52
145 NC
4
DQ20
NC
5
6
A2
*VREF
A3
146 *VREF
147 NC
7
A4
*CKE1 91
DQ36
DQ37
DQ38
DQ39
DQ40
VSS
A5
8
A6
VSS
92
A7
148 VSS
149 DQ53
150 DQ54
151 DQ55
152 VSS
9
A8
DQ21
DQ22
DQ23
VSS
93
A9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
A10/AP 66
94
BA0
A11
VCC
BA1
VCC
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
95
96
DQ9
DQ10
DQ11
DQ12
DQ13
VCC
VCC
DQ24
DQ25
DQ26
DQ27
VCC
97
DQ41
DQ42
DQ43
DQ44
DQ45
VCC
*CLK1 153 DQ56
CLK0
VSS
98
*A12
VSS
154 DQ57
155 DQ58
156 DQ59
99
DNU
CS2#
DQM2
DQM3
DNU
VCC
100
101
102
103
104
105
106
107
108
109
CKE0
SCL
SA0-2
DNU
*CS3# 157 VCC
DQM6 158 DQ60
DQM7 159 DQ61
Address in EEPROM
Do not use
No Connect
DQ28
DQ29
DQ30
DQ31
VSS
DQ14
DQ15
CB0
CB1
VSS
DQ46
DQ47
CB4
NC
*A13
VCC
160 DQ62
161 DQ63
162 VSS
*
These pins are not used in this module.
** These pins should be NC in the system
which does not support SPD.
NC
CB5
NC
NC
CLK2
NC
VSS
NC
163 *CLK3
164 NC
NC
CB2
CB3
VSS
NC
CB6
CB7
VSS
NC
NC
NC
165 **SA0
166 **SA1
167 **SA2
168 VCC
VCC
**SDA 110
VCC
WE#
DQ16
DQ17
**SCL
VCC
111
112
CAS#
DQM4
DQ48
DQ49
DQM0 56
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