WV3DG7266V-D1
White Electronic Designs
PRELIMINARY*
512MB – 2x32Mx72 SDRAM, UNBUFFERED, w/PLL
FEATURES
DESCRIPTION
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PC100 and PC133
The WV3DG7266V is a 2x32Mx72 synchronous DRAM
module which consists of nine stacked 64Mx8 with 4 banks
SDRAM components in TSOP II package, and one 2Kb
EEPROM 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
* This product is under development, is not qualified or characterized and is subject to
change without notice.
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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3.3V 0.3V Power Supply
Dual Rank
144 Pin SO-DIMM JEDEC
• PCB: 31.75mm (1.25”)
PIN NAMES
Address Input (Multiplexed)
Select Bank
PIN CONFIGURATIONS (FRONT SIDE/BACK SIDE)
A0 – A12
BA0-1
PINOUT
DQ0-63
CLK0, CLK1 Clock Input
CB0-7
CKE0
Data Input/Output
PIN FRONT PIN BACK PIN FRONT PIN BACK PIN FRONT PIN BACK
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
VSS
49
51
53
55
57
59
61
63
65
67
69
DQ13
DQ14
DQ15
VSS
CB0
CB1
CLK0
VCC
RAS#
WE#
CS0#
50
52
54
56
58
60
62
64
66
68
70
DQ45
DQ46
DQ47 101
VSS
CB4
CB5
CKE0 109
VCC 111
CAS# 113
97
99
DQ22
DQ23 100 DQ55
VCC
A6
A8
VSS
A9
A10
VCC
98
DQ54
Check Bit (Data-In/Data-Out)
Clock Enable Input
DQ32
DQ33
DQ34
DQ35
VCC
DQ36
DQ37
DQ38
DQ39
VSS
102
104
106
108
110
112
114
VCC
A7
CS0#, CS1# Chip Select Input
103
105
107
RAS#
CAS#
WE#
DQM0-7
VCC
VSS
SDA
SCL
Row Address Strobe
Column Address Strobe
#Write Enable
DQM
Power Supply (3.3V)
Ground
Serial Data I/O
Serial Clock
Do Not Use
BA0
VSS
BA1
A11
VCC
CKE1 115 DQM2 116 DQM6
A12
NC
117 DQM3 118 DQM7
119 VSS 120 VSS
23 DQM0 24 DQM4 71 CS1#* 72
DNU
NC
25 DQM1 26 DQM5 73
NC
VSS
CB2
CB3
VCC
DQ16
DQ17
DQ18
DQ19
VSS
74
76
78
80
82
84
86
88
90
92
94
96
CLK1 121 DQ24 122 DQ56
No Connect
27
29
31
33
35
37
39
41
43
45
47
VCC
A0
A1
A2
VSS
DQ8
DQ9
DQ10
DQ11
VCC
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
CB6
CB7
VCC
123 DQ25 124 DQ57
125 DQ26 126 DQ58
127 DQ27 128 DQ59
* These pins are not used in this module
** These pins should be NC in the system which does
not support SPD.
129
VCC
130
VCC
DQ48 131 DQ28 132 DQ60
DQ49 133 DQ29 134 DQ61
DQ50 135 DQ30 136 DQ62
DQ51 137 DQ31 138 DQ63
VSS
DQ52 141
DQ53 143
139
VSS
SDA
VCC
140
142
144
VSS
SCL
VCC
DQ20
DQ21
DQ12
DQ44
August 2005
Rev. 1
1
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com