W3DG7265V-D2
White Electronic Designs
512MB- 64Mx72 SDRAM UNBUFFERED
DESCRIPTION
FEATURES
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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
The W3DG7265V is a 64Mx72 synchronous DRAM
module which consists of nine 64Mx 8 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 168 pin DIMM multilayer FR4
Substrate.
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Programmable Burst Lengths: 1, 2, 4, 8 or Full Page
3.3V 0.3V Power Supply
168 pin DIMM JEDEC
*This product is subject to change without notice.
PIN NAMES
PIN CONFIGURATIONS (FRONT SIDE/BACK SIDE)
A0 – A12
BA0-1
DQ0-63
CB0-7
CK0,CK2
CKE0
CS0#, CS2# Chip Select Input
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
Pin Front Pin
Front
DQM1
CS0#
DNU
VSS
A0
A2
A4
A6
A8
A10/AP 66
BA1
VCC
VCC
CK0
VSS
DNU
CS2#
DQM2
DQM3
DNU
VCC
Pin Front Pin Back
Pin
113 DQM5 141 DQ50
DQ32 114 *CS1# 142 DQ51
DQ33 115 RAS# 143 VCC
144 DQ52
145 NC
146 *VREF
Back Pin Back
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
DQ18
DQ19
VCC
DQ20
NC
85
86
87
88
89
VSS
2
3
4
5
DQ34 116
DQ35 117
VCC
DQ36 119
DQ37 120
DQ38 121
DQ39 122
DQ40 123
VSS
A1
A3
Clock Enable Input
6
7
8
9
62 *VREF 90
63 *CKE1 91
64
65
118
Row Address Strobe
Column Address Strobe
Write Enable
DQM
Power Supply (3.3V)
Ground
Power Supply for Reference
Serial Data I/O
Serial Clock
Address in EEPROM
Do not use
DQ4
DQ5
DQ6
DQ7
DQ8
VSS
DQ9
DQ10
DQ11
DQ12
DQ13
VCC
DQ14
DQ15
CB0
CB1
VSS
A5
A7
147
148
NC
VSS
VSS
92
93
94
95
96
97
98
99
DQ21
DQ22
DQ23
VSS
DQ24
DQ25
DQ26
A9
149 DQ53
150 DQ54
151 DQ55
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
BA0
A11
VCC
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
VSS
124
152
VSS
DQ41 125
DQ42 126
DQ43 127
*CK1 153 DQ56
SCL
A12
VSS
154 DQ57
155 DQ58
SA0-2
DNU
NC
DQ27 100 DQ44 128 CKE0 156 DQ59
VCC
DQ28 102
DQ29 103 DQ46 131 DQM7 159 DQ61
DQ30 104 DQ47 132
DQ31 105
VSS
CK2
NC
No Connect
101 DQ45 129 *CS3# 157
VCC
*
These pins are not used in this module.
VCC
130 DQM6 158 DQ60
** These pins should be NC in the system
which does not support SPD.
*A13
VCC
NC
160 DQ62
161 DQ63
CB4
CB5
VSS
NC
133
134
135
136
137
138
NC
NC
CB2
CB3
VSS
DQ16
DQ17
106
107
108
109
162
163 *CK3
164 NC
VSS
NC
NC
NC
VCC
WE#
CB6
CB7
VSS
NC
NC
165 **SA0
166 **SA1
82 **SDA 110
VCC
83 **SCL 111 CAS# 139 DQ48 167 **SA2
84 VCC 112 DQM4 140 DQ49 168 VCC
28 DQM0
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