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WED3EG7233S-JD3 Datasheet Preview

WED3EG7233S-JD3 Datasheet

256MB - 2x16Mx72 DDR SDRAM UNBUFFERED

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Whitewww.datasheet4u.com Electronic Designs
WED3EG7233S-D3
-JD3
ADVANCED*
256MB – 2x16Mx72 DDR SDRAM UNBUFFERED
FEATURES
Double-data-rate architecture
DDR200 and DDR266
• JEDEC design specified
Bi-directional data strobes (DQS)
Differential clock inputs (CK & CK#)
Programmable Read Latency 2,2.5 (clock)
Programmable Burst Length (2,4,8)
Programmable Burst type (sequential & interleave)
Edge aligned data output, center aligned data input.
Auto and self refresh
Serial presence detect
Dual Rank
Power supply: 2.5V ± 0.20V
JEDEC standard 184 pin DIMM package
• JD3 PCB height: 30.48mm (1.20")
DESCRIPTION
The WED3EG7233S is a 2x16Mx72 Double Data Rate
SDRAM memory module based on 128Mb DDR SDRAM
component. The module consists of eighteen 16Mx8 DDR
SDRAMs in 66 pin TSOP packages mounted on a 184 pin
FR4 substrate.
Synchronous design allows precise cycle control with the
use of system clock. Data I/O transactions are possible on
both edges and Burst Lengths allow the same device to be
useful for a variety of high bandwidth, high performance
memory system applications.
* This product is under development, is not qualified or characterized and is subject to
change or cancellation without notice.
NOTE: Consult factory for availability of:
• RoHS compliant products
• Vendor source control options
• Industrial temperature option
Clock Speed
CL-tRCD-tRP
OPERATING FREQUENCIES
DDR266 @CL=2
133MHz
2-2-2
DDR266 @CL=2.5
133MHz
2.5-3-3
DDR200 @CL=2
100MHz
2-2-2
White Electronic Designs Corp. reserves the right to change products or specifications without notice.
May, 2005
Rev. 0
1 White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com




White Electronic Designs

WED3EG7233S-JD3 Datasheet Preview

WED3EG7233S-JD3 Datasheet

256MB - 2x16Mx72 DDR SDRAM UNBUFFERED

No Preview Available !

Whitewww.datasheet4u.com Electronic Designs
WED3EG7233S-D3
-JD3
ADVANCED
PIN CONFIGURATION
PIN SYMBOL PIN SYMBOL PIN SYMBOL PIN SYMBOL
1 VREF 47 DQS8 93 VSS 139 VSS
2 DQ0 48 A0 94 DQ4 140 DQM8
3 VSS 49 CB2 95 DQ5 141 A10
4 DQ1 50 VSS 96 VCCQ 142 CB6
5 DQS0 51 CB3 97 DQM0 143 VCCQ
6 DQ2 52 BA1 98 DQ6 144 CB7
7 VCC 53 DQ32 99 DQ7 145 VSS
8 DQ3 54 VCCQ 100 VSS 146 DQ36
9 NC 55 DQ33 101 NC 147 DQ37
10 NC 56 DQS4 102 NC 148 VCC
11 VSS 57 DQ34 103 A13* 149 DQM4
12 DQ8 58 VSS 104 VCCQ 150 DQ38
13 DQ9 59 BA0 105 DQ12 151 DQ39
14 DQS1 60 DQ35 106 DQ13 152 VSS
15 VCCQ 61 DQ40 107 DQM1 153 DQ44
16 CK1 62 VCCQ 108 VCC 154 RAS#
17 CK1# 63 WE# 109 DQ14 155 DQ45
18 VSS 64 DQ41 110 DQ15 156 VCCQ
19 DQ10 65 CAS# 111 CKE1 157 CS0#
20 DQ11 66
VSS 112 VCCQ 158 CS1#
21 CKE0 67 DQS5 113 NC 159 DQM5
22 VCCQ 68 DQ42 114 DQ20 160 VSS
23 DQ16 69 DQ43 115 A12 161 DQ46
24 DQ17 70
VCC 116
VSS 162 DQ47
25 DQS2 71 NC/CS2* 117 DQ21 163 CS3#
26 VSS 72 DQ48 118 A11 164 VCCQ
27 A9 73 DQ49 119 DQM2 165 DQ52
28 DQ18 74
VSS 120 VCC 166 DQ53
29 A7 75 CK2# 121 DQ22 167 NC
30 VCCQ 76 CK2 122 A8 168 VCC
31 DQ19 77 VCCQ 123 DQ23 169 DQM6
32 A5 78 DQS6 124 VSS 170 DQ54
33 DQ24 79 DQ50 125 A6 171 DQ55
34 VSS 80 DQ51 126 DQ28 172 VCCQ
35 DQ25 81
VSS 127 DQ29 173
NC
36 DQS3 82 VCCID 128 VCCQ 174 DQ60
37 A4 83 DQ56 129 DQM3 175 DQ61
38 VCC 84 DQ57 130 A3 176 VSS
39 DQ26 85
VCC 131 DQ30 177 DQM7
40 DQ27 86 DQS7 132 VSS 178 DQ62
41 A2 87 DQ58 133 DQ31 179 DQ63
42 VSS 88 DQ59 134 CB4 180 VCCQ
43 A1 89 VSS 135 CB5 181 SA0
44 CB0 90
NC 136 VCCQ 182 SA1
45 CB1 91 SDA 137 CK0 183 SA2
46 VCC 92 SCL 138 CK0# 184 VCCSPD
PIN NAMES
A0-A13
BA0-BA1
DQ0-DQ63
CB0-CB7
DQS0-DQS8
CK0, CK1, CK2
CK0#, CK1#, CK2#
CKE0, CKE1
CS0#, CS1#
RAS#
CAS#
WE#
DQM0-DQM8
VCC
VCCQ
VSS
VREF
VCCSPD
SDA
SCL
SA0-SA2
VCCID
NC
Address input (Multiplexed)
Bank Select Address
Data Input/Output
Check bits
Data Strobe Input/Output
Clock Input
Clock Input
Clock Enable input
Chip Select Input
Row Address Strobe
Column Address Strobe
Write Enable
Data-in-mask
Power Supply
Power Supply for DQS
Ground
Power Supply for Reference
Serial EEPROM Power Supply
Serial data I/O
Serial clock
Address in EEPROM
VCC Indentification Flag
No Connect
* Not used
White Electronic Designs Corp. reserves the right to change products or specifications without notice.
May, 2005
Rev. 0
2 White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com


Part Number WED3EG7233S-JD3
Description 256MB - 2x16Mx72 DDR SDRAM UNBUFFERED
Maker White Electronic Designs
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