Datasheet > MSM518221

MSM518221

更新时间： 2024-09-24 22:45:55

品牌	Logo	应用领域
冲电气 - OKI		存储
页数	文件大小	规格书
16页	182K
描述
262,214-Word x 8-Bit Field Memory

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

MSM518221 数据手册

E2L0032-17-Y1

This version: Jan. 1998

Previous version: Dec. 1996

¡ Semiconductor

MSM518221

¡ Semiconductor

MSM518221

262,214-Word ¥ 8-Bit Field Memory

DESCRIPTION

The OKI MSM518221 is a high performance 2-Mbit, 256K ¥ 8-bit, Field Memory. It is designed for

high-speedserialaccessapplicationssuchasHDTVs,conventionalNTSCTVs,VTRs,digitalmovies

and Multi-media systems. The 2-Mbit capacity fits one field of a conventional NTSC TV screen.

Each of the 8-bit planes has separate serial write and read ports. These employ independent control

clockstosupportasynchronousreadandwriteoperations. Differentclockratesarealsosupported,

which allow alternate data rates between write and read data streams.

TheMSM518221provideshighspeedFIFO,First-InFirst-Out,operationwithoutexternalrefreshing:

it refreshes its DRAM storage cells automatically, so that it appears fully static to the users.

Moreover, fully static type memory cells and decoders for serial access enable the refresh free serial

access operation, so that serial read and/or write control clock can be halted high or low for any

durationaslongasthepowerison. Internalconflictsofmemoryaccessandrefreshingoperations

are prevented by special arbitration logic.

The MSM518221's function is simple, and similar to a digital delay device whose delay-bit-length is

easily set by reset timing. The delay length, and the number of read delay clocks between write and

read, is determined by externally controlled write and read reset timings.

AdditionalSRAMserialregisters, orlinebuffersfortheinitialaccessof256¥8-bitenablehighspeed

first-bit-access with no clock delay just after the write or read reset timings.

TheMSM518221issimilarinoperationandfunctionalitytoOKI1-MbitFieldMemoryMSM514221B.

Ithasawritemaskfunctionorinputenablefunction(IE), andread-dataskippingfunctionoroutput

enablefunction(OE). Thedifferencesbetweenwriteenable(WE)andinputenable(IE),andbetween

read enable (RE) and output enable (OE) are that WE and RE can stop serial write/read address

increments, butIEandOEcannotstoptheincrement, whenwrite/readclockingiscontinuously

appliedtoMSM518221.Theinputenable(IE)functionallowstheusertowriteintoselectedlocations

of the memory only, leaving the rest of the memory contents unchanged. This facilitates data

processing to display a "picture in picture" on a TV screen.

1/16

12 3 4 5 6 7...16

中文翻译

下载PDF

与MSM518221相关器件

型号	品牌	获取价格	描述	数据表
MSM518221-25JS	OKI	获取价格	262,214-Word x 8-Bit Field Memory
MSM518221-25ZS	OKI	获取价格	262,214-Word x 8-Bit Field Memory
MSM518221-30GS-K	OKI	获取价格	262,214-Word x 8-Bit Field Memory
MSM518221-30JS	OKI	获取价格	262,214-Word x 8-Bit Field Memory
MSM518221-30ZS	OKI	获取价格	262,214-Word x 8-Bit Field Memory
MSM518221-40GS-K	OKI	获取价格	262,214-Word x 8-Bit Field Memory
MSM518221-40JS	OKI	获取价格	262,214-Word x 8-Bit Field Memory
MSM518221-40ZS	OKI	获取价格	262,214-Word x 8-Bit Field Memory
MSM518221A	OKI	获取价格	262,214-Word x 8-Bit Field Memory
MSM518221A-25JS	OKI	获取价格	262,214-Word x 8-Bit Field Memory

与MSM518221相关文章

SK海力士量产12层HBM3E，容量高达36GB
2024-09-27

11
意法半导体传感器驱动Sphere，开启沉浸式电影新时代
2024-09-27

14
摩尔斯微电子在美国约书亚树国家公园测试 Wi-Fi HaLow
2024-09-18

81
贸泽上架Tallysman TW5386智能GNSS天线
2024-09-18

72

产品中心

服务支持

精选活动

关于我们

帮助中心

MSM518221

MSM518221 数据手册

与MSM518221相关器件

与MSM518221相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

MSM518221

MSM518221 数据手册

与MSM518221相关器件

与MSM518221相关文章

您还可以找

您在本页遇到什么问题？