W24258-LL datasheet(1/10 Pages) WINBOND

Teilenummer	W24258-LL

Bauteilbeschribung	32K X 8 CMOS STATIC RAM

PDF	10 Pages

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Hersteller	WINBOND [Winbond]

Direct Link	http://www.winbond.com

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W24258/LL

32K

× 8 CMOS STATIC RAM

Publication Release Date: November 1998

- 1 -

Revision A5

GENERAL DESCRIPTION

The W24258/LL is a normal speed, very low power CMOS static RAM organized as 32768

× 8 bits

that operates on a single 5-volt power supply. This device is manufactured using Winbond's high

performance CMOS technology.

FEATURES

• Low power consumption:

− Active: 350 mW (max.)

− Standby: 25

µW (max.)

• Access time: 55/70 nS (max.)

• Single 5V power supply

• Fully static operation

• All inputs and outputs directly TTL compatible

• Three-state outputs

• Battery back-up operation capability

• Data retention voltage: 2V (min.)

• Packaged in 28-pin 600 mil DIP, 330 mil SOP

and standard type one TSOP (8 mm

× 13.4

mm)

PIN CONFIGURATIONS

1

2

3

4

5

6

7

8

9

10

11

12

13

14

28-pin

DIP

28

27

26

25

24

23

22

21

20

19

18

17

16

15

VDD

WE

A13

A8

A9

A11

OE

A10

CS

I/O8

I/O7

I/O6

I/O5

I/O4

A14

A12

A7

A6

A5

A4

A3

A2

A1

A0

I/O1

I/O2

I/O3

VSS

1

2

3

4

5

6

7

8

9

10

11

12

13

14

28

27

26

25

24

23

22

21

20

19

18

17

16

15

28-pin

TSOP

OE

A11

A9

A8

A13

WE

V DD

A14

A12

A7

A6

A5

A4

A3

A10

CS

I/O8

I/O7

I/O6

I/O5

I/O4

I/O3

I/O2

I/O1

A0

A1

A2

V SS

BLOCK DIAGRAM

CLK GEN.

PRECHARGE CKT.

CORE CELL ARRAY

512 ROWS

64 X 8 COLUMNS

DATA

CNTRL.

CLK

GEN.

R

O

W

D

E

C

O

D

E

R

A12

A14

A2

A3

A4

A5

A6

A7

A13

A11

I/O CKT.

COLUMN DECODER

OE

WE

CS

I/O1

I/O8

A10 A1 A0 A8 A9

PIN DESCRIPTION

SYMBOL

DESCRIPTION

A0

−A14

Address Inputs

I/O1

−I/O8

Data Inputs/Outputs

CS

Chip Select Input

WE

Write Enable Input

OE

Output Enable Input

VDD

Power Supply

VSS

Ground

Ähnliche Beschreibung - W24258-LL

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