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PDF WED3DG649V-D1 Data sheet ( Hoja de datos )
| Número de pieza | WED3DG649V-D1 | |
| Descripción | 64MB- 8Mx64 SDRAM | |
| Fabricantes | White Electronic Designs | |
| Logotipo |  |
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Whitewww.datasheet4u.com Electronic Designs
WED3DG649V-D1
64MB- 8Mx64 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 ± 0.3V Power Supply
144 Pin SO-DIMM JEDEC
DESCRIPTION
The WED3DG649V is a 8Mx64 synchronous DRAM
module which consists of four 8Meg x 16 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 144 pin SO-DIMM multilayer
FR4 Substrate.
* This product is subject to change without notice.
PIN CONFIGURATIONS (FRONT SIDE/BACK SIDE)
PIN FRONT PIN
1 VSS 2
3 DQ0 4
5 DQ1 6
7 DQ2 8
9 DQ3 10
11 VCC 12
13 DQ4 14
15 DQ5 16
17 DQ6 18
19 DQ7 20
21 VSS 22
23 DQM0 24
25 DQM1 26
27 VCC 28
29 A0 30
31 A1 32
33 A2 34
35 VSS 36
37 DQ8 38
39 DQ9 40
41 DQ10 42
43 DQ11 44
45 VCC 46
47 DQ12 48
49 DQ13 50
BACK
VSS
DQ32
DQ33
DQ34
DQ35
VCC
DQ36
DQ37
DQ38
DQ39
VSS
DQM4
DQM5
VCC
A3
A4
A5
VSS
DQ40
DQ41
DQ42
DQ43
VCC
DQ44
DQ45
PINOUT
PIN FRONT PIN
51 DQ14 52
53 DQ15 54
55 VSS 56
57 NC 58
59 NC 60
BACK
DQ46
DQ47
VSS
NC
NC
VOLTAGE KEY
61 CLK0 62 CKE0
63 VCC 64 VCC
65 RAS# 66 CAS#
67 WE# 68 *CKE1
69 CS0# 70 *A12
71 *CS1# 72 *A13
73 DNU 74 *CLK1
75 VSS 76 VSS
77 NC 78 NC
79 NC 80 NC
81 VCC 82 VCC
83 DQ16 84 DQ48
85 DQ17 86 DQ49
87 DQ18 88 DQ50
89 DQ19 90 DQ51
91 VSS 92 VSS
93 DQ20 94 DQ52
PIN BACK PIN
95 DQ21 96
97 DQ22 98
99 DQ23 100
101 VCC 102
103 A6 104
105 A8 106
107 VSS 108
109 A9 110
111 A10/AP 112
113 VCC 114
115 DQM2 116
117 DQM3 118
119 VSS 120
121 DQ24 122
123 DQ25 124
125 DQ26 126
127 DQ27 128
129 VCC 130
131 DQ28 132
133 DQ29 134
135 DQ30 136
137 DQ31 138
139 VSS 140
141 **SDA 142
143 VCC 144
BACK
DQ53
DQ54
DQ55
VCC
A7
BA0
VSS
BA1
A11
VCC
DQM6
DQM7
VSS
DQ56
DQ57
DQ58
DQ59
VCC
DQ60
DQ61
DQ62
DQ63
VSS
**SCL
VCC
PIN NAMES
A0 – A11 Address Input (Multiplexed)
BA0-1
Select Bank
DQ0-63 Data Input/Output
CLK0
Clock Input
CKE0
Clock Enable Input
CS0#
Chip Select Input
RAS#
Row Address Strobe
CAS#
Column Address Strobe
WE# Write Enable
DQM0-7 DQM
VCC Power Supply (3.3V)
VSS Ground
*VREF
Power Supply for Reference
SDA Serial Data I/O
SCL Serial Clock
DNU Do Not Use
NC No Connect
* These pins are not used in this module.
** These pins should be NC in the system which does
not support SPD.
White Electronic Designs Corp. reserves the right to change products or specifications without notice.
May 2004
Rev. 1
1 White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com
1 page  
Whitewww.datasheet4u.com Electronic Designs
WED3DG649V-D1
PACKAGE DIMENSIONS FOR D1
Ordering Information
Speed
CAS Latency
WED3DG649V10D1
100MHz
CL=2
WED3DG649V7D1
133MHz
CL=2
WED3DG649V75D1
133MHz
CL=3
Note: For industrial temperature range product, add an "I" to the end of the part number.
Height*
31.75 (1.250”)
31.75 (1.250”)
31.75 (1.250”)
PACKAGE DIMENSIONS FOR D1
2.01 (0.079 Min)
67.72
(2.661 Max)
2.54
(0.100)
MAX.
3.99
(0.157)
23.14
(0.913)
28.2
(1.112)
32.79
(1.291)
4.60 (0.181)
1.50 (0.059)
19.99
(0.787)
31.75
(1.250)
Max
3.20
(0.126)
MIN.
* All Dimensions are in millimeters and (inches).
0.99
± 0.10
(0.039)
(± 0.004)
White Electronic Designs Corp. reserves the right to change products or specifications without notice.
May 2004
Rev. 1
5 White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet WED3DG649V-D1.PDF ] | |
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