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U盘闪存类型大盘点

更新时间:2026-08-21 00:34:34 | 编辑:伊人 | 信息来源:互联网

  对U盘有所研究的用户都知道决定着U盘寿命的是闪存,而闪存的擦写速度又决定着闪存的寿命。因此我们在选购U盘的时候便可以根据选择闪存的寿命来进行选择。因此,我们今天便为大家详细地介绍下闪存的三种类型以及他们的优缺点,一起来学习下吧。

  一般闪存类型分为TLC、MLC、SLC三类,价格当然也是依次递增的了。市场上的几十元的U盘绝大多数属于TLC类型。

  SLC、 MLC和TLC X3(3-bit-per-cell)架构的TLC芯片技术是MLC和TLC技术的延伸,最早期NAND Flash技术架构是SLC(Single-Level Cell),原理是在1个存储器储存单元(cell)中存放1位元(bit)的资料,直到MLC(Multi-Level Cell)技术接棒后,架构演进为1个存储器储存单元存放2位元。 2009年TLC架构正式问世,代表1个存储器储存单元可存放3位元,成本进一步大幅降低。如同上一波SLC技术转MLC技术趋势般,这次也是由NAND Flash大厂东芝(Toshiba)引发战火,之后三星电子(Samsung Electronics)也赶紧加入战局,使得整个TLC技术大量被量产且应用在终端产品上。TLC芯片虽然储存容量变大,成本低廉许多,但因为效能也大打折扣,因此仅能用在低阶的NAND Flash相关产品上,象是低速快闪记忆卡、小型记忆卡microSD或随身碟等。象是内嵌世纪液体应用、智能型手机(Smartphone)、固态硬碟 (SSD)等技术门槛高,对于NAND Flash效能讲求高速且不出错等应用产品,则一定要使用SLC或MLC芯片。

  2010年NAND Flash市场的主要成长驱动力是来自于智能型手机和平板计算机,都必须要使用SLC或MLC芯片,因此这两种芯片都处于缺货状态,而TLC芯片却是持续 供过于求,且将整个产业的平均价格往下拉,使得市调机构iSuppli在统计2010年第2季全球NAND Flash产值时,出现罕见的市场规模缩小情况发生,从2010年第1季43亿美元下降至41亿美元,减少6.5%。U盘MP3中使用的SLC、MLC、 TLC闪存芯片的区别:

  SLC = Single-Level Cell ,即1bit/cell,速度快寿命长,价格超贵(约MLC 3倍以上的价格),约10万次擦写寿命 MLC = Multi-Level Cell,即2bit/cell,速度一般寿命一般,价格一般,约3000---10000次擦写寿命 TLC = Trinary-Level Cell,即3bit/cell,也有Flash厂家叫8LC,速度慢寿命短,价格便宜,约500次擦写寿命,目前还没有厂家能做到1000次。

  以上便是关于闪存三种类型TLC、MLC、SLC的详细介绍了,有了以上关于三种类型闪存的对比,相信对大家在选择购买U盘上定会起到帮助的作用。


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