W49F002 datasheet(2/23 Pages) WINBOND

Part #	W49F002

Description	256K X 8 CMOS FLASH MEMORY

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Manufacturer	WINBOND [Winbond]

Direct Link	http://www.winbond.com

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W49F002U

- 2 -

PIN CONFIGURATIONS

1

2

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16

32

31

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29

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22

21

20

19

18

17

DQ0

DQ1

DQ2

GND

A7

A6

A5

A4

A3

A2

A1

A0

A16

A15

A12

V

WE

A14

A13

A8

A9

A11

OE

A10

CE

DQ7

DQ6

DQ5

DQ4

DQ3

DD

A17

32-pin

DIP

RESET

5

6

7

9

10

11

12

13

A7

A6

A5

A4

A3

A2

A1

A0

DQ0

29

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21

30

31

32

1

2

3

4

8

20

19

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14

D

Q

1

D

Q

2

G

N

D

Q

3

D

Q

4

D

Q

5

D

Q

6

A14

A13

A8

A9

A11

OE

A10

CE

DQ7

A

1

2

A

1

6

V

D

/

W

E

A

1

5

32-pin

PLCC

A

1

7

/

R

E

S

E

T

32-pin

TSOP

1

2

3

4

5

6

7

8

9

10

11

12

13

14

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16

A15

A12

A7

A6

A5

A4

V

WE

A14

A13

A8

DD

A11

A9

A16

A17

RESET

A3

A2

A1

A0

DQ0

DQ1

DQ2

GND

OE

A10

CE

DQ7

DQ6

DQ5

DQ4

DQ3

32

31

30

29

28

27

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25

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21

20

19

18

17

BLOCK DIAGRAM

CONTROL

OUTPUT

BUFFER

DECODER

CE

OE

WE

A0

.

A17

.

DQ0

VDD

VSS

DQ7

3FFFF

20000

1FFFF

38000

37FFF

3A000

39FFF

00000

3C000

3BFFF

RESET

PARAMETER

BLOCK2

8K BYTES

BOOT BLOCK

16K BYTES

PARAMETER

BLOCK1

8K BYTES

MAIN MEMORY

BLOCK2

128K BYTES

MAIN MEMORY

BLOCK1

96K BYTES

PIN DESCRIPTION

SYMBOL

PIN NAME

RESET

Reset

A0

−A17

Address Inputs

DQ0

−DQ7

Data Inputs/Outputs

CE

Chip Enable

OE

Output Enable

WE

Write Enable

VDD

Power Supply

GND

Ground

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