Datasheet > MSM5412222-25JS

MSM5412222-25JS

更新时间： 2024-11-30 14:53:59

品牌	Logo	应用领域
冲电气 - OKI		光电二极管内存集成电路
页数	文件大小	规格书
15页	170K
描述
Memory Circuit, 256KX12, CMOS, PDSO40, 0.400 INCH, 1.27 MM PITCH, PLASTIC, SOJ-40

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MSM5412222-25JS 技术参数

生命周期：	Obsolete	零件包装代码：	SOJ
包装说明：	SOJ,	针数：	40
Reach Compliance Code：	unknown	HTS代码：	8542.32.00.71
风险等级：	5.62	JESD-30 代码：	R-PDSO-J40
长度：	26.03 mm	内存密度：	3145728 bit
内存集成电路类型：	MEMORY CIRCUIT	内存宽度：	12
功能数量：	1	端子数量：	40
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：	256KX12
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：	3.75 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：	10.16 mm
Base Number Matches：	1

MSM5412222-25JS 数据手册

E2L0034-17-Y1

Preliminary

This version: Jan. 1998

Previous version: Dec. 1996

¡ Semiconductor

MSM5412222

¡ Semiconductor

MSM5412222

262,214-Word ¥ 12-Bit Field Memory

DESCRIPTION

The OKI MSM5412222 is a high performance 3-Mbit, 256K ¥12-bit, Field Memory. It is especially

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

VTRs, digital movies and Multi-media systems. MSM5412222 is a FRAM for wide or low end use

in general commodity TVs and VTRs exclusively. MSM5412222 is not designed for high end use

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

storage systems and others. Two or more MSM5412222s can be cascaded directly without any

delay devices between them. (Cascading provides larger storage depth or a longer delay).

Each of the 12-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, which allow alternate data rates between write and read data streams.

The MSM5412222 provides high speed FIFO, First-In First-Out, operation without external

refreshing: MSM5412222 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 duration as long as the power is on. Internal conflicts of memory access and refreshing

operations are prevented by special arbitration logic.

The MSM5412222’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.

Additional SRAM serial registers, or line buffers for the initial access of 256 ¥ 12-bit enable high

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

Additionally, theMSM5412222hasawritemaskfunctionorinputenablefunction(IE), andread-

data skipping function or output enable function (OE). The differences between write enable

(WE) and input enable (IE), and between read enable (RE) and output enable (OE) are that WE

and RE can stop serial write/read address increments, but IE and OE cannot stop the increment,

when write/read clocking is continuously applied to MSM5412222. The input enable (IE)

function allows the user to write into selected locations of the memory only, leaving the rest of

thememorycontentsunchanged. Thisfacilitatesdataprocessingtodisplaya“pictureinpicture”

on a TV screen.

The MSM5412222 is similar in operation and functionality to OKI 1-Mbit Field Memory

MSM514222Band2-MbitFieldMemoryMSM518222. ThreeMSM514222BsoroneMSM514222B

plus one MSM518222 can be replaced simply by one MSM5412222.

1/15

12 3 4 5 6 7...15

中文翻译

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与MSM5412222-25JS相关器件

型号	品牌	获取价格	描述	数据表
MSM5412222-25TS-K	OKI	获取价格	Memory Circuit, 256KX12, CMOS, PDSO44, 0.400 INCH, 0.80 MM PITCH, PLASTIC, TSOP2-44
MSM5412222-30TS-K	OKI	获取价格	Memory Circuit, 256KX12, CMOS, PDSO44, 0.400 INCH, 0.80 MM PITCH, PLASTIC, TSOP2-44
MSM5412222A	OKI	获取价格	262,214-Word x 12-Bit Field Memory
MSM5412222A-25JA	OKI	获取价格	Memory Circuit, 256KX12, CMOS, PDSO40, 0.400 INCH, 1.27 MM PITCH, PLASTIC, SOJ-40
MSM5412222A-25TA	OKI	获取价格	Memory Circuit, 256KX12, CMOS, PDSO44, 0.400 INCH, 0.8 MM PITCH, PLASTIC, TSOP2-44
MSM5412222A-25TS-K	OKI	获取价格	Memory Circuit, 256KX12, CMOS, PDSO44, 0.400 INCH, 0.8 MM PITCH, PLASTIC, TSOP2-44
MSM5412222A-30JA	OKI	获取价格	Memory Circuit, 256KX12, CMOS, PDSO40, 0.400 INCH, 1.27 MM PITCH, PLASTIC, SOJ-40
MSM5412222A-30JS	OKI	获取价格	Memory Circuit, 256KX12, CMOS, PDSO40, 0.400 INCH, 1.27 MM PITCH, PLASTIC, SOJ-40
MSM5412222A-30TA	OKI	获取价格	Memory Circuit, 256KX12, CMOS, PDSO44, 0.400 INCH, 0.8 MM PITCH, PLASTIC, TSOP2-44
MSM5412222A-30TS-K	OKI	获取价格	Memory Circuit, 256KX12, CMOS, PDSO44, 0.400 INCH, 0.8 MM PITCH, PLASTIC, TSOP2-44

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