W49F020 Datasheet, PDF(2/21 Page) Winbond – 256K X 8 CMOS FLASH MEMORY

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W49F020 Datasheet, PDF (2/21 Pages) Winbond – 256K X 8 CMOS FLASH MEMORY

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Preliminary W49F020

PIN CONFIGURATIONS

NC 1

A16 2

A15 3

A12 4

A7 5

A6 6

A5 7

A4 8

A3 9

A2 10

A1 11

A0 12

DQ0 13

DQ1 14

DQ2 15

GND 16

32

31

30

29

28

27

32-pin 26

DIP 25

24

23

22

21

20

19

18

17

VDD

WE

A17

A14

A13

A8

A9

A11

OE

A10

CE

DQ7

DQ6

DQ5

DQ4

DQ3

AAA V / A

1 1 1 N DW 1

2 5 6 CDE 7

4 3 2 1 32 31 30

A7 5

29 A14

A6 6

28 A13

A5 7

A4 8

A3 9

32-pin

PLCC

27 A8

26 A9

25 A11

A2 10

24 OE

A1 11

23 A10

A0 12

DQ0 13

22 CE

21 DQ7

14 15 16 17 18 19 20

DDGDDDD

QQN QQQQ

12D3456

A11

1

A9

2

A8

3

A13

4

A14

5

A17

6

WE

7

VDD

8

NC

9

A16

10

A15

11

A12

12

A7

13

A6

14

A5

15

A4

16

32-pin

TSOP

32

OE

31

A10

30

CE

29

DQ7

28

DQ6

27 DQ5

26

DQ4

25

DQ3

24

GND

23

DQ2

22

DQ1

21 DQ0

20

A0

19

A1

18 A2

17

A3

BLOCK DIAGRAM

VDD

VSS

CE

OE

WE

A0

.

.

A17

W49F020

CONTROL

DECODER

OUTPUT

BUFFER

DQ0

..

DQ7

MAIM MEMORY

248K BYTES

BOOT BLOCK

8K BYTES

3FFFF

02000

01FFF

00000

PIN DESCRIPTION

SYMBOL

A0âA17

DQ0âDQ7

CE

OE

WE

VDD

GND

NC

PIN NAME

Address Inputs

Data Inputs/Outputs

Chip Enable

Output Enable

Write Enable

Power Supply

Ground

No Connection

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