512MB - 64Mx72 DDR SDRAM REGISTERED
Description
White Electronic Designs
W3EG7266S-D3
PRELIMINARY*
512MB – 64Mx72 DDR SDRAM REGISTERED w/PLL
FEATURES
Double-data-rate architecture Clock speeds of 100MHz and 133MHz 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 Power Supply: 2.
5V ± 0.
20V Standard 184 pin DIMM package • D3 = 26.
67mm (1.
05")
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DESCRIPTION
The W3EG7266S is a 64Mx72 Double Data Rate SDRAM memory module based on 512Mb DDR SDRAM component.
The module consists of nine 64Mx8 DDR SDRAMs in 66 pin TSOP package 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 Lenths 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 without notice.
NOTE: Consult factory for availability of: • RoHS compliant products • Vendor source control options • Industrial temperature option
OPERATING FREQUENCIES
DDR266 @CL=2 Clock Speed CL-tRCD-tRP 133MHz 2-2-2 DDR266 @CL=2.
5 133MHz 2.
5-3-3 DDR200 @CL=2 100MHz 2-2-2
October 2005 Rev.
3
1
White Electronic Designs Corporation • (602) 437-1520 • www.
wedc.
com
White Electronic Designs
PIN CONFIGURATIONS
PIN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 SYMBOL VREF DQ0 VSS DQ1 DQS0 DQ2 VCC DQ3 NC RESET# VSS DQ8 DQ9 DQS1 VCC *CK1 *CK1# VSS DQ10 DQ11 CKE0 VCC DQ16 DQ17 DQS2 VSS A9 DQ18 A7 VCC DQ19 A5 DQ24 VSS DQ25 DQS3 A4 VCC DQ26 DQ27 A2 VSS A1 CB0 CB1 VCC PIN 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 8...
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