White Electronic Designs
256MB - 32Mx72 SDRAM UNBUFFERED
FEATURES
PC100 and PC133 Compatible
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
Programmable Burst Lengths: 1, 2, 4, 8 or Full
Page
3.3V 鹵 0.3V Power Supply
144 Pin SO-DIMM JEDEC
鈥?Package height options:
JD1: 31.75 (1.25")
W3DG7232V-D1
-JD1
PRELIMINARY*
DESCRIPTION
The W3DG7232V is a 32Mx72 synchronous DRAM module
which consists of nine 32Mx8 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 144 Pin SO-DIMM multilayer FR4 Substrate.
* This product is under development, is not quali鏗乪d or characterized and is subject to
change without notice.
PIN CONFIGURATIONS (FRONT SIDE/BACK SIDE)
PIN FRONT PIN BACK PIN FRONT PIN BACK PIN FRONT PIN BACK
1
V
SS
2
V
SS
49 DQ13 50 DQ45 97 DQ22 98 DQ54
3
DQ0
4
DQ32 51 DQ14 52 DQ46 99 DQ23 100 DQ55
5
DQ1
6
DQ33 53 DQ15 54 DQ47 101 V
CC
102 V
CC
7
DQ2
8
DQ34 55
V
SS
56
V
SS
103
A6
104
A7
9
DQ3
10 DQ35 57
CB0
58
CB4 105
A8
106 BA0
11
V
CC
12
V
CC
59
CB1
60
CB5 107 V
SS
108 V
SS
13
DQ4
14 DQ36 61 CLK0 62 CKE0 109
A9
110 BA1
15
DQ5
16 DQ37 63
V
CC
64
V
CC
111 A10 112 A11
17
DQ6
18 DQ38 65 RAS# 66 CAS# 113 V
CC
114 V
CC
19
DQ7
20 DQ39 67 WE# 68
NC
115 DQMB2 116 DQMB6
21
V
SS
22
V
SS
69
SO#
70
A12 117 DQMB3 118 DQMB7
23 DQMB0 24 DQB4 71
NC
72
NC
119
V
SS
120 V
SS
25 DQMB1 26 DQB5 73
NC
74 CLK1 121 DQ24 122 DQ56
27
V
CC
28
V
CC
75
V
SS
76
V
SS
123 DQ25 124 DQ57
29
A0
30
A3
77
CB2
78
CB6 125 DQ26 126 DQ58
31
A1
32
A4
79
CB3
80
CB7 127 DQ27 128 DQ59
33
A2
34
A5
81
V
CC
82
V
CC
129 V
CC
130 V
CC
35
V
SS
36
V
SS
83 DQ16 84 DQ48 131 DQ28 132 DQ60
37
DQ8
38 DQ40 85 DQ17 86 DQ49 133 DQ29 134 DQ61
39
DQ9
40 DQ41 87 DQ18 88 DQ50 135 DQ30 136 DQ62
41 DQ10 42 DQ42 89 DQ19 90 DQ51 137 DQ31 138 DQ63
43 DQ11 44 DQ43 91
VSS
92
V
SS
139 V
SS
140 V
SS
45
V
CC
46
V
CC
93 DQ20 94 DQ52 141 SDA 142 SCL
47 DQ12 48 DQ44 95 DQ21 96 DQ53 143 V
CC
144 V
CC
A0 鈥?A12
BA0-1
DQ0-63
CB0-7
CLK0,CK1
CKE0
CS0#
RAS#
CAS#
WE#
DQMB0-7
V
CC
V
SS
SDA
SCL
DNU
NC
PIN NAMES
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
Serial data I/O
Serial clock
Do not use
No Connect
September 2004
Rev. 0
1
White Electronic Designs Corporation 鈥?(602) 437-1520 鈥?www.wedc.com
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