W3EG2256M72ASSR-JD3 Datasheet PDF - White Electronic
| Part Number | W3EG2256M72ASSR-JD3 | |
| Description | 4GB - 2x256Mx72 DDR SDRAM REGISTERED ECC | |
| Manufacturers | White Electronic | |
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There is a preview and W3EG2256M72ASSR-JD3 download ( pdf file ) link at the bottom of this page. Total 14 Pages | ||
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White Electronic Designs
W3EG2256M72ASSR-JD3
-AJD3
PRELIMINARY*
4GB – 2x256Mx72 DDR SDRAM REGISTERED ECC, w/PLL
FEATURES
Double-data-rate architecture
DDR200, and DDR266:
• JEDEC design specifications
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: VCC = 2.5V ± 0.2V
JEDEC standard 184 pin DIMM package
www.DataSheet4U.com
• Package height options:
JD3: 30.48mm (1.2"),
AJD3: 28.70mm (1.13")
DESCRIPTION
The W3EG2256M72ASSR is a 2x256Mx72 Double
Data Rate SDRAM memory module based on 1Gb DDR
SDRAM components. The module consists of eighteen
512Mx4 stacks, 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 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
133MHz
2-3-3
DDR266 @CL=2.5
133MHz
2.5-3-3
DDR200 @CL=2
100MHz
2-2-2
November, 04
Rev. 3
1 White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com
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White Electronic Designs
W3EG2256M72ASSR-JD3
-AJD3
PRELIMINARY
IDD SPECIFICATIONS AND TEST CONDITIONS
0°C ≤ TA ≤ +70°C, VCCQ = 2.5V ± 0.2V, VCC = 2.5V ± 0.2V.
Includes DDR SDRAM components only
Parameter
Rank 1
Symbol Conditions
Operating Current
IDD0 One device bank; Active - Precharge; tRC = tRC
(MIN); tCK = tCK (MIN); DQ,DM and DQS inputs
changing once per clock cycle; Address and
control inputs changing once every two cycles.
Operating Current
IDD1 One device bank; Active-Read-Precharge Burst
= 2; tRC = tRC (MIN); tCK = tCK (MIN); lOUT = 0mA;
Address and control inputs changing once per
clock cycle.
Precharge Power-
IDD2P All device banks idle; Power-down mode; tCK =
Down Standby Current
tCK (MIN); CKE = (low)
Idle Standby Current
IDD2F CS# = High; All device banks idle;
tCK = tCK (MIN); CKE = High; Address and other
control inputs changing once per clock cycle. VIN
= VREF for DQ, DQS and DM.
Active Power-Down
Standby Current
IDD3P One device bank active; Power-Down mode; tCK
(MIN); CKE = (low)
Active Standby Current IDD3N CS# = High; CKE = High; One device bank;
Active-Precharge;tRC = tRAS (MAX); tCK = tCK
(MIN); DQ, DM and DQS inputs changing twice
per clock cycle; Address and other control inputs
changing once per clock cycle.
Operating Current
IDD4R Burst = 2; Reads; Continuous burst; One device
bank active; Address and control inputs changing
once per clock cycle; tCK = tCK (MIN); lOUT = 0mA.
Operating Current
IDD4W Burst = 2; Writes; Continuous burst; One device
bank active; Address and control inputs changing
once per clock cycle; tCK = tCK (MIN); DQ,DM and
DQS inputs changing once per clock cycle.
Auto Refresh Current
IDD5 tRC = tRC (MIN)
Self Refresh Current
IDD6 CKE ≤ 0.2V
Operating Current
IDD7A Four bank interleaving Reads (BL=4) with auto
precharge with tRC=tRC (MIN); tCK=tCK(MIN);
Address and control inputs change only during
Active Read or Write commands.
DDR266:@CL=2, 2.5
Max
4680
5310
360
2340
1260
1800
5760
5940
7920
324
11250
DDR200@CL=2
Max
4230
4860
360
2160
1080
1620
5220
5400
7560
324
10350
Units
mA
Rank 2
Standby
State
IDD3N
mA IDD3N
rnA IDD2P
mA IDD2F
mA IDD3P
mA IDD3N
mA IDD3N
rnA IDD3N
mA IDD3N
mA IDD6
mA IDD3N
November, 04
Rev. 3
5 White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com
Preview 5 Page |
Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for W3EG2256M72ASSR-JD3 electronic component. |
| Information | Total 14 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ W3EG2256M72ASSR-JD3.PDF Datasheet ] | |
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