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OKI Semiconductor

MSM5416258B

DESCRIPTION

Technical Information

262,144-Word x 16-Bit DYNAMIC RAM : FAST PAGE MODE TYPE WITH EDO

The MSM5416258B is a 262,144-word x 16-bit dynamic RAM fabricated in OKI's CMOS silicon gate

technology. The MSM5416258B achieves high integration,high-speed operation,and low-power

consumption due to quadruple polysilicon double metal CMOS. The MSM5416258B is available in a

40-pin plastic SOJ.

FEATURES

鈥?262,144-word by 16-bit configuration

鈥?Single 5V power supply,

鹵10%

tolerance

鈥?Input :TTL compatible

鈥?Output :TTL compatible, 3-state

鈥?Refresh : 512 cycles/8ms

鈥?Fast page mode with EDO,read modify write capability

鈥?Byte wide control: 2 CAS control

鈥?CAS before RAS refresh, Hidden refresh, RAS only refresh capability

鈥?Package : 40-Pin 400 mil plastic SOJ (SOJ40-P-400)

(Product : MSM5416258B-xxJS) xx : indicates speed rank.

PRODUCT FAMILY

Access Time (Max.)

Family

MSM5416258B-28

MSM5416258B-30

MSM5416258B-35

Cycle Time (Min.)

t

RAC

28ns

30ns

35ns

t

AA

15ns

16ns

19ns

t

CAC

t

OEA

9ns

9ns

10ns

9ns

9ns

10ns

t

RC

48ns

55ns

60ns

t

HPC

12ns

13ns

13ns

Power Dissipation

1485mW

1458mW

1430mW

PIN CONFIGURATION ( TOP VIEW )

Vcc

DQ0

DQ1

DQ2

DQ3

Vcc

DQ4

DQ5

DQ6

DQ7

NC

NC

WE

RAS

NC

A0

A1

A2

A3

Vcc

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

24

23

22

21

Vss

DQ15

DQ14

DQ13

DQ12

Vss

DQ11

DQ10

DQ9

DQ8

NC

LCAS

UCAS

OE

A8

A7

A6

A5

A4

Vss

Pin Names

A0-A8

RAS

LCAS,UCAS

DQ0-15

WE

OE

Vcc

Vss

NC

Function

Address Input

Row Address Strobe

Column Address Strobe

Data-Input/ Data-Output

Write Enable

Output Enable

Power Supply ( +5V )

Ground ( 0V )

No Connection

Note1 : The same power supply voltage must be

provided to every Vcc pin, and the same

GND voltage level must beprovideded to

every Vss pin.

40Pin 400mil SOJ

REVISION-2 1997.11.10, specification are subject to change without advanced notice.

next

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