WED3DG7266V-D1
White Electronic Designs
PRELIMINARY*
512MB – 64Mx72 SDRAM, UNBUFFERED, w/PLL
FEATURES
DESCRIPTION
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PC100 and PC133
The WED3DG7266V is a 64Mx72 synchronous DRAM
module which consists of nine 64Mx8 SDRAM components
in TSOP II package, and one 2Kb EEPROM in an 8
pin TSOP package for Serial Presence Detect which
are mounted on a 144 pin SO-DIMM multilayer FR4
Substrate.
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
NOTE: Consult factory for availability of:
• RoHS compliant products
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Programmable Burst Lengths: 1, 2, 4, 8 or Full
Page
• Vendor source control options
• Industrial temperature option
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Single Rank
3.3V 0.3V Power Supply
144 Pin SO-DIMM JEDEC
•
D1: 31.75 (1.25") TYP
PIN CONFIGURATIONS (FRONT SIDE/BACK SIDE)
PIN NAMES
Address Input (Multiplexed)
Select Bank
A0 – A12
BA0-1
DQ0-63
PINOUT
PIN FRONT PIN
BACK
VSS
PIN FRONT PIN
BACK
DQ45
DQ46
DQ47
VSS
CB4
CB5
CKE0
VCC
CAS#
PIN FRONT PIN
BACK
DQ54
DQ55
VCC
A7
BA0
VSS
BA1
A11
VCC
Data Input/Output
CLK0, CLK1 Clock Input
1
3
5
7
9
11
13
15
17
19
21
VSS
DQ0
DQ1
DQ2
DQ3
VCC
DQ4
DQ5
DQ6
DQ7
VSS
2
4
6
8
10
12
14
16
18
20
22
49
51
53
55
57
59
61
63
65
67
69
DQ13
DQ14
DQ15
VSS
CB0
CB1
50
52
54
56
58
60
62
64
66
68
70
72
74
76
78
80
82
84
86
88
90
92
94
96
97
99
DQ22
DQ23
VCC
A6
A8
VSS
A9
98
DQ32
DQ33
DQ34
DQ35
VCC
DQ36
DQ37
DQ38
DQ39
VSS
100
102
104
106
108
110
112
114
CB0-7
CKE0
CS0#
RAS#
CAS#
WE#
DQM0-7
VCC
VSS
SDA
SCL
DNU
NC
Check Bit (Data-In/Data-Out)
101
103
105
107
109
111
113
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
CLK0
VCC
A10
VCC
RAS#
WE#
SO#
S1#*
NC
CKE1* 115 DQMB2 116 DQMB6
A12*
NC
CLK1
VSS
CB6
117 DQMB3 118 DQMB7
23 DQMB0 24 DQMB4 71
25 DQMB1 26 DQMB5 73
119
121
123
125
127
129
131
133
135
137
139
141
143
VSS
DQ24
DQ25
DQ26
DQ27
VCC
DQ28
DQ29
DQ30
DQ31
VSS
120
122
124
126
128
130
132
134
136
138
140
142
144
VSS
DQ56
DQ57
DQ58
DQ59
VCC
DQ60
DQ61
DQ62
DQ63
VSS
Do Not Use
No Connect
27
29
31
33
35
37
39
41
43
45
47
VCC
A0
28
30
32
34
36
38
40
42
44
46
48
VCC
A3
A4
A5
VSS
DQ40
DQ41
DQ42
DQ43
VCC
75
77
79
81
83
85
87
89
91
93
95
VSS
CB2
CB3
VCC
DQ16
DQ17
DQ18
DQ19
VSS
* These pins are not used in this module
** These pins should be NC in the system which does
not support SPD.
A1
A2
CB7
VCC
VSS
DQ48
DQ49
DQ50
DQ51
VSS
DQ8
DQ9
DQ10
DQ11
VCC
DQ20
DQ21
DQ52
DQ53
SDA
VCC
SCL
VCC
DQ12
DQ44
Febuary 2006
Rev. 2
1
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com