Datasheet > MSM5412222A-30JS

MSM5412222A-30JS

更新时间： 2024-02-22 02:40:15

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
13页	68K
描述
Memory Circuit, 256KX12, CMOS, PDSO40, 0.400 INCH, 1.27 MM PITCH, PLASTIC, SOJ-40

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MSM5412222A-30JS 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

MSM5412222A-30JS 数据手册

Semiconductor

OKI

MSM5412222A

REVISION-3 1999.6.10

262,214-Word x 12-Bit Field Memory

DESCRIPTION

The OKI MSM5412222A is a high performance 3-Mbit, 256K X 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. MSM5412222A is a FRAM for wide

or low end use in general commodity TVs and VTRs exclusively. MSM5412222A 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 MSM5412222As 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 MSM5412222A provides high speed FIFO, First-In First-Out, operation without external

refreshing: MSM5412222A 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 MSM5412222A’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 X 12-bit enable high

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

Additionally, the MSM5412222A has a write mask function or input enable function (IE), and

read-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 MSM5412222A. The input

enable (IE) function allows the user to write into selected locations 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.

The MSM5412222A is similar in operation and functionality to OKI 1-Mbit Field Memory

MSM514222C and 2-Mbit Field Memory MSM518222A. Three MSM514222Cs or one

MSM514222C plus one MSM518222A can be replaced simply by one MSM5412222A.

12 3 4 5 6 7...13

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与MSM5412222A-30JS相关器件

型号	品牌	获取价格	描述	数据表
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
MSM5412222B	OKI	获取价格	262,214-Word 】 12-Bit Field Memory
MSM5412222B-25JS	OKI	获取价格	262,214-Word 】 12-Bit Field Memory
MSM5412222B-25TS-K	OKI	获取价格	262,214-Word 】 12-Bit Field Memory
MSM5412222B-30JS	OKI	获取价格	262,214-Word 】 12-Bit Field Memory
MSM5412222B-30TS-K	OKI	获取价格	262,214-Word 】 12-Bit Field Memory
MSM5412222B-XXJS	OKI	获取价格	262,214-Word 】 12-Bit Field Memory
MSM5412222B-XXTS-K	OKI	获取价格	262,214-Word 】 12-Bit Field Memory
MSM5416125A	OKI	获取价格	131,072-Word X 16-Bit DYNAMIC RAM : FAST PAGE MODE TYPE

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