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PDF W3DG7237V-D2 Data sheet ( Hoja de datos )
| Número de pieza | W3DG7237V-D2 | |
| Descripción | SDRAM UNBUFFERED | |
| Fabricantes | White Electronic Designs | |
| Logotipo |  |
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White Electronic Designs
W3DG7237V-D2
PRELIMINARY*
256MB - 32Mx72 SDRAM UNBUFFERED
FEATURES
PC100 and PC133
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 ± 0.3V Power Supply
JEDEC standard 168 Pin DIMM
DESCRIPTION
The W3DG7237V is a 32Mx72 synchronous DRAM
module which consists of nine 32Mx8 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.
* This product is under development, is not qualified or characterized and is subject to
change without notice.
www.DataSheet4U.com
PIN CONFIGURATIONS (FRONT SIDE/BACK SIDE)
PIN NAMES
Pin Front Pin
1 VSS 29
2 DQ0 30
3 DQ1 31
4 DQ2 32
5 DQ3 33
6 VCC 34
7 DQ4 35
8 DQ5 36
9 DQ6 37
10 DQ7 38
11 DQ8 39
12 VSS 40
13 DQ9 41
14 DQ10 42
15 DQ11 43
16 DQ12 44
17 DQ13 45
18 VCC 46
19 DQ14 47
20 DQ15 48
21 CB0 49
22 CB1 50
23 Vss 51
24 NC 52
25 NC 53
26 VCC 54
27 WE# 55
28 DQM0 56
Front
DQM1
CS0#
DNU
VSS
A0
A2
A4
A6
A8
A10/AP
BA1
VCC
VCC
CK0
VSS
DNU
CS2#
DQM2
DQM3
DNU
VCC
NC
NC
CB2
CB3
VSS
DQ16
DQ17
Pin Front Pin Back Pin Back Pin Back
57 DQ18 85 VSS 113 DQM5 141 DQ50
58 DQ19 86 DQ32 114 *CS1# 142 DQ51
59 VCC 87 DQ33 115 RAS# 143 VCC
60 DQ20 88 DQ34 116 VSS
144 DQ52
61 NC 89 DQ35 117 A1 145 NC
62 *VREF 90 VCC 118 A3
146 *VREF
63 *CKE1 91 DQ36 119 A5 147 NC
64 VSS 92 DQ37 120 A7 148 VSS
65 DQ21 93 DQ38 121 A9
149 DQ53
66 DQ22 94 DQ39 122 BA0 150 DQ54
67 DQ23 95 DQ40 123 A11 151 DQ55
68 VSS 96 VSS 124 VCC 152 VSS
69 DQ24 97 DQ41 125 *CLK1 153 DQ56
70 DQ25 98 DQ42 126 A12 154 DQ57
71 DQ26 99 DQ43 127 VSS
155 DQ58
72 DQ27 100 DQ44 128 CKE0 156 DQ59
73 VCC 101 DQ45 129 *CS3# 157 VCC
74 DQ28 102 VCC 130 DQM6 158 DQ60
75 DQ29 103 DQ46 131 DQM7 159 DQ61
76 DQ30 104 DQ47 132 *A13 160 DQ62
77 DQ31 105 CB4 133 VCC 161 DQ63
78 VSS 106 CB5 134 NC 162 VSS
79 CLK2 107 VSS 135 NC
163 *CLK3
80 NC 108 NC 136 CB6 164 NC
81 NC 109 NC 137 CB7 165 **SA0
82 **SDA 110 VCC 138 VSS
166 **SA1
83 **SCL 111 CAS# 139 DQ48 167 **SA2
84 VCC 112 DQM4 140 DQ49 168 VCC
A0 – A12
BA0-1
DQ0-63
CB0-7
CLK0,CLK2
CKE0
CS0#,CS2#
RAS#
CAS#
WE#
DQM0-7
VCC
VSS
*VREF
SDA
SCL
SA0-2
DNU
NC
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
Address in EEPROM
Do not use
No Connect
* These pins are not used in this module.
** These pins should be NC in the system which does not
support SPD.
June 2004
Rev. 0
1 White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com
1 page  
White Electronic Designs
W3DG7237V-D2
PRELIMINARY
ORDERING INFORMATION
Part Number
W3DG7237V10D2
W3DG7237V7D2
W3DG7237V75D2
Speed
100MHz
133MHz
133MHz
CAS Latency
CL=2
CL=2
CL=3
Height*
30.48 (1.20")
30.48 (1.20")
30.48 (1.20")
www.Data3S.99heet4U.com
(0.157)
(2X)
PACKAGE DIMENSIONS
133.48
(5.255) MAX.
11.43
(0.450)
8.88
(0.350)
24.49
(0.964)
1.98
(0.078)
(2X)
6.35
(0.250)
36.83
(1.450)
42.19
(1.661)
3.18
(0.125)
1.27
54.61 (0.050) TYP.
(2.150)
* ALL DIMENSIONS ARE IN MILLIMETERS AND (INCHES)
3.05
(0.120)
MAX
30.48
(1.20)
MAX
17.78
(0.700)
3.99
(0.157)
1.27 ± 0.10
(0.050 ± 0039)
June 2004
Rev. 0
5 White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet W3DG7237V-D2.PDF ] | |
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