MSM518221-25ZS datasheet, PDF - EEWORLD Datasheet

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MSM518221-25ZS: Description262,214-Word x 8-Bit Field Memory; Categorystorage storage; File Size171KB，16 Pages; ManufacturerOKI; Websitehttp://www.oki.com

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MSM518221-25ZS Overview

262,214-Word x 8-Bit Field Memory

MSM518221-25ZS Parametric

Parameter Name	Attribute value
Maker	OKI
Parts packaging code	ZIP
package instruction	ZIP,
Contacts	28
Reach Compliance Code	unknow
Other features	INTERNAL 512 ROWS X 512 COLUMN X 8 BITS; SELF REFRESH
JESD-30 code	R-PZIP-T28
length	36 mm
memory density	2097152 bi
Memory IC Type	MEMORY CIRCUIT
memory width	8
Number of functions	1
Number of terminals	28
word count	262144 words
character code	256000
Operating mode	SYNCHRONOUS
Maximum operating temperature	70 °C
Minimum operating temperature
organize	256KX8
Output characteristics	3-STATE
Package body material	PLASTIC/EPOXY
encapsulated code	ZIP
Package shape	RECTANGULAR
Package form	IN-LINE
Certification status	Not Qualified
Maximum seat height	10.16 mm
Maximum supply voltage (Vsup)	5.5 V
Minimum supply voltage (Vsup)	4.5 V
Nominal supply voltage (Vsup)	5 V
surface mount	NO
technology	CMOS
Temperature level	COMMERCIAL
Terminal form	THROUGH-HOLE
Terminal pitch	1.27 mm
Terminal location	ZIG-ZAG
width	2.8 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

MSM518221-25ZS Related Products

	MSM518221-25ZS	MSM518221-25JS	MSM518221-30GS-K	MSM518221-30JS	MSM518221-30ZS	MSM518221-40GS-K	MSM518221-40JS	MSM518221-40ZS	MSM518221
Description	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
Maker	OKI	OKI	OKI	OKI	OKI	OKI	-	OKI	-
Parts packaging code	ZIP	SOJ	SOIC	SOJ	ZIP	SOIC	SOJ	ZIP	-
package instruction	ZIP,	SOJ,	SOP,	SOJ,	ZIP,	SOP,	SOJ,	ZIP,	-
Contacts	28	28	28	28	28	28	28	28	-
Reach Compliance Code	unknow	unknow	unknown	unknow	unknow	unknow	unknow	unknow	-
Other features	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 code	R-PZIP-T28	R-PDSO-J28	R-PDSO-G28	R-PDSO-J28	R-PZIP-T28	R-PDSO-G28	R-PDSO-J28	R-PZIP-T28	-
length	36 mm	18.41 mm	18.5 mm	18.41 mm	36 mm	18.5 mm	18.41 mm	36 mm	-
memory density	2097152 bi	2097152 bi	2097152 bit	2097152 bi	2097152 bi	2097152 bi	2097152 bi	2097152 bi	-
Memory IC Type	MEMORY CIRCUIT	MEMORY CIRCUIT	MEMORY CIRCUIT	MEMORY CIRCUIT	MEMORY CIRCUIT	MEMORY CIRCUIT	MEMORY CIRCUIT	MEMORY CIRCUIT	-
memory width	8	8	8	8	8	8	8	8	-
Number of functions	1	1	1	1	1	1	1	1	-
Number of terminals	28	28	28	28	28	28	28	28	-
word count	262144 words	262144 words	262144 words	262144 words	262144 words	262144 words	262144 words	262144 words	-
character code	256000	256000	256000	256000	256000	256000	256000	256000	-
Operating mode	SYNCHRONOUS	SYNCHRONOUS	SYNCHRONOUS	SYNCHRONOUS	SYNCHRONOUS	SYNCHRONOUS	SYNCHRONOUS	SYNCHRONOUS	-
Maximum operating temperature	70 °C	70 °C	70 °C	70 °C	70 °C	70 °C	70 °C	70 °C	-
organize	256KX8	256KX8	256KX8	256KX8	256KX8	256KX8	256KX8	256KX8	-
Output characteristics	3-STATE	3-STATE	-	3-STATE	3-STATE	-	3-STATE	3-STATE	-
Package body material	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	-
encapsulated code	ZIP	SOJ	SOP	SOJ	ZIP	SOP	SOJ	ZIP	-
Package shape	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	-
Package form	IN-LINE	SMALL OUTLINE	SMALL OUTLINE	SMALL OUTLINE	IN-LINE	SMALL OUTLINE	SMALL OUTLINE	IN-LINE	-
Certification status	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	-
Maximum seat height	10.16 mm	3.75 mm	2.5 mm	3.75 mm	10.16 mm	2.5 mm	3.75 mm	10.16 mm	-
Maximum supply voltage (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	-
Minimum supply voltage (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	-
Nominal supply voltage (Vsup)	5 V	5 V	5 V	5 V	5 V	5 V	5 V	5 V	-
surface mount	NO	YES	YES	YES	NO	YES	YES	NO	-
technology	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	-
Temperature level	COMMERCIAL	COMMERCIAL	COMMERCIAL	COMMERCIAL	COMMERCIAL	COMMERCIAL	COMMERCIAL	COMMERCIAL	-
Terminal form	THROUGH-HOLE	J BEND	GULL WING	J BEND	THROUGH-HOLE	GULL WING	J BEND	THROUGH-HOLE	-
Terminal pitch	1.27 mm	1.27 mm	1.27 mm	1.27 mm	1.27 mm	1.27 mm	1.27 mm	1.27 mm	-
Terminal location	ZIG-ZAG	DUAL	DUAL	DUAL	ZIG-ZAG	DUAL	DUAL	ZIG-ZAG	-
width	2.8 mm	10.16 mm	8.8 mm	10.16 mm	2.8 mm	8.8 mm	10.16 mm	2.8 mm	-

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