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MSM518221-25JS: 产品描述262,214-Word x 8-Bit Field Memory; 产品类别存储存储; 文件大小171KB，共16页; 制造商OKI; 官网地址http://www.oki.com

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MSM518221-25JS概述

262,214-Word x 8-Bit Field Memory

MSM518221-25JS规格参数

参数名称	属性值
厂商名称	OKI
零件包装代码	SOJ
包装说明	SOJ,
针数	28
Reach Compliance Code	unknow
其他特性	INTERNAL 512 ROWS X 512 COLUMN X 8 BITS; SELF REFRESH
JESD-30 代码	R-PDSO-J28
长度	18.41 mm
内存密度	2097152 bi
内存集成电路类型	MEMORY CIRCUIT
内存宽度	8
功能数量	1
端子数量	28
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	256KX8
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	3.75 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

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E2L0032-17-Y1

¡ Semiconductor

MSM518221

262,214-Word

8-Bit Field Memory

This version: Jan. 1998

MSM518221

Previous version: Dec. 1996

DESCRIPTION

The OKI MSM518221 is a high performance 2-Mbit, 256K

8-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. 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

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 MSM518221 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 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 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.

Additional SRAM serial registers, or line buffers for the initial access of 256

8-bit enable high speed

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

The MSM518221 is similar in operation and functionality to OKI 1-Mbit Field Memory MSM514221B.

It 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 MSM518221. 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.

1/16

MSM518221-25JS相似产品对比

	MSM518221-25JS	MSM518221-25ZS	MSM518221-30GS-K	MSM518221-30JS	MSM518221-30ZS	MSM518221-40GS-K	MSM518221-40JS	MSM518221-40ZS	MSM518221
描述	262,214-Word x 8-Bit Field Memory	262,214-Word x 8-Bit Field Memory	262,214-Word x 8-Bit Field Memory	262,214-Word x 8-Bit Field Memory	262,214-Word x 8-Bit Field Memory	262,214-Word x 8-Bit Field Memory	262,214-Word x 8-Bit Field Memory	262,214-Word x 8-Bit Field Memory	262,214-Word x 8-Bit Field Memory
厂商名称	OKI	OKI	OKI	OKI	OKI	OKI	-	OKI	-
零件包装代码	SOJ	ZIP	SOIC	SOJ	ZIP	SOIC	SOJ	ZIP	-
包装说明	SOJ,	ZIP,	SOP,	SOJ,	ZIP,	SOP,	SOJ,	ZIP,	-
针数	28	28	28	28	28	28	28	28	-
Reach Compliance Code	unknow	unknow	unknown	unknow	unknow	unknow	unknow	unknow	-
其他特性	INTERNAL 512 ROWS X 512 COLUMN X 8 BITS; SELF REFRESH	INTERNAL 512 ROWS X 512 COLUMN X 8 BITS; SELF REFRESH	-	INTERNAL 512 ROWS X 512 COLUMN X 8 BITS; SELF REFRESH	INTERNAL 512 ROWS X 512 COLUMN X 8 BITS; SELF REFRESH	-	INTERNAL 512 ROWS X 512 COLUMN X 8 BITS; SELF REFRESH	INTERNAL 512 ROWS X 512 COLUMN X 8 BITS; SELF REFRESH	-
JESD-30 代码	R-PDSO-J28	R-PZIP-T28	R-PDSO-G28	R-PDSO-J28	R-PZIP-T28	R-PDSO-G28	R-PDSO-J28	R-PZIP-T28	-
长度	18.41 mm	36 mm	18.5 mm	18.41 mm	36 mm	18.5 mm	18.41 mm	36 mm	-
内存密度	2097152 bi	2097152 bi	2097152 bit	2097152 bi	2097152 bi	2097152 bi	2097152 bi	2097152 bi	-
内存集成电路类型	MEMORY CIRCUIT	MEMORY CIRCUIT	MEMORY CIRCUIT	MEMORY CIRCUIT	MEMORY CIRCUIT	MEMORY CIRCUIT	MEMORY CIRCUIT	MEMORY CIRCUIT	-
内存宽度	8	8	8	8	8	8	8	8	-
功能数量	1	1	1	1	1	1	1	1	-
端子数量	28	28	28	28	28	28	28	28	-
字数	262144 words	262144 words	262144 words	262144 words	262144 words	262144 words	262144 words	262144 words	-
字数代码	256000	256000	256000	256000	256000	256000	256000	256000	-
工作模式	SYNCHRONOUS	SYNCHRONOUS	SYNCHRONOUS	SYNCHRONOUS	SYNCHRONOUS	SYNCHRONOUS	SYNCHRONOUS	SYNCHRONOUS	-
最高工作温度	70 °C	70 °C	70 °C	70 °C	70 °C	70 °C	70 °C	70 °C	-
组织	256KX8	256KX8	256KX8	256KX8	256KX8	256KX8	256KX8	256KX8	-
输出特性	3-STATE	3-STATE	-	3-STATE	3-STATE	-	3-STATE	3-STATE	-
封装主体材料	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	-
封装代码	SOJ	ZIP	SOP	SOJ	ZIP	SOP	SOJ	ZIP	-
封装形状	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	-
封装形式	SMALL OUTLINE	IN-LINE	SMALL OUTLINE	SMALL OUTLINE	IN-LINE	SMALL OUTLINE	SMALL OUTLINE	IN-LINE	-
认证状态	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	-
座面最大高度	3.75 mm	10.16 mm	2.5 mm	3.75 mm	10.16 mm	2.5 mm	3.75 mm	10.16 mm	-
最大供电电压 (Vsup)	5.5 V	5.5 V	5.5 V	5.5 V	5.5 V	5.5 V	5.5 V	5.5 V	-
最小供电电压 (Vsup)	4.5 V	4.5 V	4.5 V	4.5 V	4.5 V	4.5 V	4.5 V	4.5 V	-
标称供电电压 (Vsup)	5 V	5 V	5 V	5 V	5 V	5 V	5 V	5 V	-
表面贴装	YES	NO	YES	YES	NO	YES	YES	NO	-
技术	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	-
温度等级	COMMERCIAL	COMMERCIAL	COMMERCIAL	COMMERCIAL	COMMERCIAL	COMMERCIAL	COMMERCIAL	COMMERCIAL	-
端子形式	J BEND	THROUGH-HOLE	GULL WING	J BEND	THROUGH-HOLE	GULL WING	J BEND	THROUGH-HOLE	-
端子节距	1.27 mm	1.27 mm	1.27 mm	1.27 mm	1.27 mm	1.27 mm	1.27 mm	1.27 mm	-
端子位置	DUAL	ZIG-ZAG	DUAL	DUAL	ZIG-ZAG	DUAL	DUAL	ZIG-ZAG	-
宽度	10.16 mm	2.8 mm	8.8 mm	10.16 mm	2.8 mm	8.8 mm	10.16 mm	2.8 mm	-

MSM518221-25JS

MSM518221-25JS概述

MSM518221-25JS规格参数

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MSM518221-25JS相似产品对比

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