參數(shù)資料
型號(hào)： W3H64M72E-SB
廠(chǎng)商： MICROSEMI CORP-PMG MICROELECTRONICS
元件分類(lèi)： DRAM
英文描述： 64M X 72 DDR DRAM, PBGA208
封裝： 17 X 23 MM, 1 MM PITCH, PLASTIC, BGA-208
文件頁(yè)數(shù)： 6/30頁(yè)
文件大?。?/td> 999K
代理商： W3H64M72E-SB
W3H64M72E-XSBX
14
White Electronic Designs Corporation (602) 437-1520 www.wedc.com
White Electronic Designs
December 2006
Rev. 2
ADVANCED*
White Electronic Designs Corp. reserves the right to change products or specications without notice.
POSTED CAS ADDITIVE LATENCY (AL)
Posted CAS additive latency (AL) is supported to make
the command and data bus efficient for sustainable
bandwidths in DDR2 SDRAM. Bits E3–E5 dene the value
of AL, as shown in Figure 7. Bits E3–E5 allow the user
to program the DDR2 SDRAM with an inverse AL of 0, 1,
2, 3, or 4 clocks. Reserved states should not be used as
unknown operation or incompatibility with future versions
may result.
In this operation, the DDR2 SDRAM allows a READ or
WRITE command to be issued prior to tRCD (MIN) with
the requirement that AL ≤ tRCD (MIN). A typical application
using this feature would set AL = tRCD (MIN) - 1x tCK. The
READ or WRITE command is held for the time of the AL
before it is issued internally to the DDR2 SDRAM device.
RL is controlled by the sum of AL and CL; RL = AL+CL.
Write latency (WL) is equal to RL minus one clock; WL =
AL + CL - 1 x tCK.
A9
A7 A 6 A5 A4 A3
A8
A2
A1 A0
Exten ded Mo de
Re gister (Ex)
Address Bus
97
6
5
4
3
82
1
0
A10
A12 A11
BA0
BA1
10
11
12
13
01
14
15
A13
0
1
0
1
Mode Register Definition
M15
0
0
1
M14
EMR2
01
01 01
01
High Temperature Self Refresh rate enable
Industrial temperature option;
use if T
C ex cee ds 85° C
E7
0
1
BA2
16
M1 6
0
0
Mode register (MR)
Extended mode register (EMR)
Extended mode register (EMR2)
Extended mode register (EMR3)
Commercial temperature default
FIGURE 8 – EXTENDED MODE REGISTER 2 (EMR2) DEFINITION
Note: 1. E13 (A13)-E0(A0) are reserved for future use and must be programmed to
"0." A13 is not used in this device.
相關(guān)PDF資料
PDF描述
W7NCF02GH30CS3CG 128M X 16 FLASH 3.3V PROM CARD, 150 ns, UUC
W7NCF02GH30CS8AG 128M X 16 FLASH 3.3V PROM CARD, 150 ns, UUC
W7NCF02GH30CS8EG 128M X 16 FLASH 3.3V PROM CARD, 150 ns, UUC
W7NCF02GH30CSBEG 128M X 16 FLASH 3.3V PROM CARD, 150 ns, UUC
W7NCF02GH30IS3BG 128M X 16 FLASH 3.3V PROM CARD, 150 ns, UUC
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
W3H64M72E-SBC 制造商:WEDC 制造商全稱(chēng):White Electronic Designs Corporation 功能描述:64M x 72 DDR2 SDRAM 208 PBGA Multi-Chip Package
W3H64M72E-SBI 制造商:WEDC 制造商全稱(chēng):White Electronic Designs Corporation 功能描述:64M x 72 DDR2 SDRAM 208 PBGA Multi-Chip Package
W3H64M72E-SBM 制造商:WEDC 制造商全稱(chēng):White Electronic Designs Corporation 功能描述:64M x 72 DDR2 SDRAM 208 PBGA Multi-Chip Package
W3H64M72E-XSBX 制造商:WEDC 制造商全稱(chēng):White Electronic Designs Corporation 功能描述:64M x 72 DDR2 SDRAM 208 PBGA Multi-Chip Package
W3HG128M64EEU403D4XXG 制造商:WEDC 制造商全稱(chēng):White Electronic Designs Corporation 功能描述:1GB - 128Mx64 DDR2 SDRAM UNBUFFERED, SO-DIMM
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠(chǎng)商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*