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參數資料
| 型號： | W3EG72255S335JD3XG |
| 英文描述： | 2GB - 2x128Mx72 DDR SDRAM REGISTERED ECC, w/PLL |
| 中文描述： | 2GB的- 2x128Mx72 ECC的DDR SDRAM的注冊，瓦特/鎖相環 |
| 文件頁數： | 7/15頁 |
| 文件大小： | 260K |
| 代理商： | W3EG72255S335JD3XG |
W3EG72255S-D3
-JD3
-AJD3
PRELIMINARY
7
White Electronic Designs
November 2004
Rev. 2
White Electronic Designs Corporation (602) 437-1520 www.wedc.com
I
DD1
: OPERATING CURRENT: ONE BANK
1. Typical Case: V
CC
= 2.5V, T = 25°C
2. Worst Case: V
CC
= 2.7V, T = 10°C
3. Only one bank is accessed with t
RC
(min), Burst
Mode, Address and Control inputs on NOP edge are
changing once per clock cycle. l
OUT
= 0mA
4. Timing patterns
DDR200 (100MHz, CL = 2) : t
CK
= 10ns, CL2, BL =
4, t
RCD
= 2*t
CK
, t
RAg
= 5*t
CK
Read: A0 N R0 N N P0 N A0 N - repeat the same
timing with random address changing; 50% of data
changing at every burst
DDR266 (133MHz, CL = 2.5) : t
CK
= 7.5ns, CL =
2.5, BL = 4, t
RCD
= 3*t
CK
, t
RC
= 9*t
CK
, t
RAg
= 5*t
CK
Read: A0 N N R0 N P0 N N N A0 N - repeat the
same timing with random address changing; 50% of
data changing at every burst
DDR266 (133MHz, CL = 2) : t
CK
= 7.5ns, CL = 2, BL
= 4, t
RCD
= 3*t
CK
, t
RC
= 9*t
CK
, t
RAg
= 5*t
CK
Read: A0 N N R0 N P0 N N N A0 N - repeat the
same timing with random address changing; 50% of
data changing at every burst
DDR333 (166MHz, CL = 2.5) : t
CK
= 6ns, BL = 4,
t
RCD
= 10*t
CK
, t
RAg
= 7*t
CK
Read: A0 N N R0 N P0 N N N A0 N — repeat the
same timing with random address changing; 50% of
data changing at every burst
I
DD7A
: OPERATING CURRENT: FOUR BANKS
1. Typical Case: V
CC
= 2.5V, T = 25°C
2. Worst Case: V
CC
= 2.7V, T = 10°C
3. Four banks are being interleaved with t
RC
(min), Burst
Mode, Address and Control inputs on NOP edge are
not changing.
lout = 0mA
4. Timing patterns
DDR200 (100MHz, CL = 2) : t
CK
= 10ns, CL2,
BL = 4, t
RRD
= 2*t
CK
, t
RCD
= 3*t
CK
, Read with
autoprecharge
Read: A0 N A1 R0 A2 R1 A3 R2 A0 R3 A1 R0
- repeat the same timing with random address
changing; 100% of data changing at every burst
DDR266 (133MHz, CL = 2.5) : t
CK
= 7.5ns, CL =
2.5, BL = 4, t
RRD
= 3*t
CK
, t
RCD
= 3*t
CK
Read with
autoprecharge
Read: A0 N A1 R0 A2 R1 A3 R2 N R3 A0 N A1
R0 - repeat the same timing with random address
changing; 100% of data changing at every burst
DDR266 (133MHz, CL = 2): t
CK
= 7.5ns, CL2 = 2,
BL = 4, t
RRD
= 2*t
CK
, t
RCD
= 3*t
CK
Read: A0 N A1 R0 A2 R1 A3 R2 N R3 A0 N A1
R0 - repeat the same timing with random address
changing; 100% of data changing at every burst
DDR333 (166MHz, CL = 2.5) : t
CK
= 6ns, BL = 4,
t
RRD
= 3*t
CK
, t
RCD
= 3*t
CK
, Read with autoprecharge
Read: A0 N A1 R0 A2 R1 A3 R2 N R3 A0 N A1
R0 - repeat the same timing with random address
changing; 100% of data changing at every burst
Legend: A = Activate, R = Read, W = Write, P =
DETAILED TEST CONDITIONS FOR DDR SDRAM I
DD1
& I
DD7A
Precharge, N = NOP
A (0-3) = Activate Bank 0-3
R (0-3) = Read Bank 0-3
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相關代理商/技術參數 |
參數描述 |
|---|---|
| W3EG72255S-AJD3 | 制造商:WEDC 制造商全稱:White Electronic Designs Corporation 功能描述:2GB - 2x128Mx72 DDR SDRAM REGISTERED ECC, w/PLL |
| W3EG72255S-D3 | 制造商:WEDC 制造商全稱:White Electronic Designs Corporation 功能描述:2GB - 2x128Mx72 DDR SDRAM REGISTERED ECC, w/PLL |
| W3EG72255S-JD3 | 制造商:WEDC 制造商全稱:White Electronic Designs Corporation 功能描述:2GB - 2x128Mx72 DDR SDRAM REGISTERED ECC, w/PLL |
| W3EG72256MS100AJD3MF | 制造商:WEDC 制造商全稱:White Electronic Designs Corporation 功能描述:2GB-256Mx72 DDR SDRAM REGISTERED ECC w/PLL |
| W3EG72256MS100AJD3MG | 制造商:WEDC 制造商全稱:White Electronic Designs Corporation 功能描述:2GB-256Mx72 DDR SDRAM REGISTERED ECC w/PLL |
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