Datasheet > 存储 > 其他内存集成电路> MSM514221B-30JS

MSM514221B-30JS

更新时间： 2024-11-08 22:35:23

品牌	Logo	应用领域
冲电气 - OKI		存储内存集成电路光电二极管
页数	文件大小	规格书
15页	154K
描述
262,263-Word x 4-Bit Field Memory

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MSM514221B-30JS 技术参数

生命周期：	Obsolete	零件包装代码：	SOJ
包装说明：	SOJ,	针数：	20
Reach Compliance Code：	unknown	HTS代码：	8542.32.00.71
风险等级：	5.8	Is Samacsys：	N
其他特性：	INTERNAL 4 X 512 ROWS X 512 COLUMNS OF DRAM CELLS; SELF REFRESH	JESD-30 代码：	R-PDSO-J20
长度：	17.15 mm	内存密度：	1048576 bit
内存集成电路类型：	MEMORY CIRCUIT	内存宽度：	4
功能数量：	1	端子数量：	20
字数：	262144 words	字数代码：	256000
工作模式：	SYNCHRONOUS	最高工作温度：	70 °C
最低工作温度：		组织：	256KX4
输出特性：	3-STATE	封装主体材料：	PLASTIC/EPOXY
封装代码：	SOJ	封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE	认证状态：	Not Qualified
座面最大高度：	3.55 mm	最大供电电压 (Vsup)：	5.5 V
最小供电电压 (Vsup)：	4.5 V	标称供电电压 (Vsup)：	5 V
表面贴装：	YES	技术：	CMOS
温度等级：	COMMERCIAL	端子形式：	J BEND
端子节距：	1.27 mm	端子位置：	DUAL
宽度：	7.62 mm	Base Number Matches：	1

MSM514221B-30JS 数据手册

E2L0029-17-Y1

This version: Jan. 1998

Previous version: Dec. 1996

¡ Semiconductor

MSM514221B

¡ Semiconductor

MSM514221B

262,263-Word ¥ 4-Bit Field Memory

DESCRIRTION

The OKI MSM514221B is a high performance 1-Mbit, 256K ¥ 4-bit, Field Memory. It is designed

for high-speed serial access applications such as HDTVs, conventional NTSC TVs, VTRs, digital

movies and Multi-media systems. It is a FRAM for wide or low end use as general commodity

TVs and VTRs, exclusively. The MSM514221B is not designed for the other use or high end use

in medical systems, professional graphics systems which require long term picture, and data

storage systems and others. The 1-Mbit capacity fits one field of a conventional NTSC TV screen.

Each of the 4-bit planes has separate serial write and read ports. These employ independent

control clocks to support asynchronous read and write operations. Different clock rates are also

supported that allow alternate data rates between write and read data streams.

The MSM514221B provides high speed FIFO, First-In First-Out, operation without external

refreshing: 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 refresh free serial

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

any duration as long as the power is on. Internal conflicts of memory access and refreshing

operations are prevented by special arbitration logic.

The MSM514221B's function is simple, and similar to a digital delay device whose delay-bit-

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

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

Additional SRAM serial registers, or line buffers for the initial access of 256 ¥ 4-bit enable high

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

The MSM514221B is similar in operation and functionality to OKI 2-Mbit Field Memory

MSM518221.

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与MSM514221B-30JS相关器件

型号	品牌	获取价格	描述	数据表
MSM514221B-30RS	OKI	获取价格	262,263-Word x 4-Bit Field Memory
MSM514221B-30ZS	OKI	获取价格	262,263-Word x 4-Bit Field Memory
MSM514221B-40JS	OKI	获取价格	262,263-Word x 4-Bit Field Memory
MSM514221B-40RS	OKI	获取价格	262,263-Word x 4-Bit Field Memory
MSM514221B-40ZS	OKI	获取价格	262,263-Word x 4-Bit Field Memory
MSM514221B-60JS	OKI	获取价格	262,263-Word x 4-Bit Field Memory
MSM514221B-60RS	OKI	获取价格	262,263-Word x 4-Bit Field Memory
MSM514221B-60ZS	OKI	获取价格	262,263-Word x 4-Bit Field Memory
MSM514222B	OKI	获取价格	262,263-Word x 4-Bit Field Memory
MSM514222B-30JS	OKI	获取价格	Memory Circuit, 256KX4, CMOS, PDSO20, 0.300 INCH, 1.27 MM PITCH, PLASTIC, SOJ-26/20

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