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发表于 2006-1-5 09:04:00
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<P>现在有新的MMCMicro,主要推动者是Nokia和Samsung.</P><P>主要制造商是Samsung.</P><P>他是基于一种新的协议,但是这种协议是免协议费的,所以MMCMicro的成本要比SD和T-Flash有</P><P>优势,大概64M要少1美圆多.</P><P>但是从技术上它是有不可比拟的优势的,体积和T-Flash基本相当,但是访问速度要比T-Flash快6倍以上.</P><P>明年Nokia和Samsung将联合在手机产品中采用新的MMCmicro卡,相信Nokia和Samsung联合(2者各占手机35%和14%的</P><P>销售量)推动下,MMCMicro必定在未来几年发展壮大.以下是MMCmicro的一些数据和特性.也可以去<a href="http://www.samsung.com/Products/Semiconductor/FlashCard/MMC/micro_mmc.htm" target="_blank" >http://www.samsung.com/Products/Semiconductor/FlashCard/MMC/micro_mmc.htm</A>浏览详细资料.</P><P>Higher Performance
<img src="http://www.samsung.com/images/spacer.gif">> Use the high performance technology SLC(Single Layer Cell)
<img src="http://www.samsung.com/images/spacer.gif">- X1 MMCmicro : > 1.9MB/s
<img src="http://www.samsung.com/images/spacer.gif">- X4 MMCmicro : > 7.0MB/s
<img src="http://www.samsung.com/Products/Semiconductor/FlashCard/MMC/images/Bult_cross_org.gif"> MMCmicro can operate on both 1.8V and 3V supply voltage
<img src="http://www.samsung.com/Products/Semiconductor/FlashCard/MMC/images/Bult_cross_org.gif"> Lower Power Consumption
<img src="http://www.samsung.com/images/spacer.gif">> Dual Voltage Support
<img src="http://www.samsung.com/images/spacer.gif">> Lower Stand-by Current
<img src="http://www.samsung.com/Products/Semiconductor/FlashCard/MMC/images/Bult_cross_org.gif"> Higher Density
<img src="http://www.samsung.com/images/spacer.gif">> Use 5-Stack technology
<img src="http://www.samsung.com/images/spacer.gif">- 512MB in early ’05, 1GB in late ‘05
<img src="http://www.samsung.com/Products/Semiconductor/FlashCard/MMC/images/Bult_cross_org.gif"> Stronger Mechanical Spec
<img src="http://www.samsung.com/images/spacer.gif">> Verified ESD immunity in current MMC
<img src="http://www.samsung.com/images/spacer.gif">- Contact : 4KV, Air Discharge : 15KV
<img src="http://www.samsung.com/Products/Semiconductor/FlashCard/MMC/images/Bult_cross_org.gif"> Open Standard Interface
<img src="http://www.samsung.com/images/spacer.gif">> Use MMC interface
<img src="http://www.samsung.com/Products/Semiconductor/FlashCard/MMC/images/Bult_cross_org.gif"> MMCmicro extends battery life and eliminate the need for voltage step-up circuits to power card slots in 1.8V systems.
<img src="http://www.samsung.com/images/spacer.gif">> For example, TI OMAP 1710 chipset supplies only 1.8V to card now
<img src="http://www.samsung.com/images/spacer.gif">> If 3V card is used, needs level-shifter
<img src="http://www.samsung.com/Products/Semiconductor/FlashCard/MMC/images/Bult_cross_org.gif"> Data recorded on a dual-voltage card in a mobile phone operating at 1.8 V can be read by a PDA or similar device
operating at 3 V.
</P>[br]<p align=right><font color=red>+5 RD币</font></p> |
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