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鈥?5V Read

鈥?5V Reprogramming

Fast Read Access Time - 55 ns

Internal Program Control and Timer

Sector Architecture

鈥?One 16K Byte Boot Block with Programming Lockout

鈥?Two 8K Byte Parameter Blocks

鈥?Two Main Memory Blocks (96K, 128K) Bytes

Fast Erase Cycle Time - 10 seconds

Byte By Byte Programming - 10

碌

s/Byte Typical

Hardware Data Protection

DATA Polling For End Of Program Detection

Low Power Dissipation

鈥?50 mA Active Current

鈥?100

碌

A CMOS Standby Current

Typical 10,000 Write Cycles

鈥?/div>

Description

The AT49F002(N)T is a 5-volt-only in-system reprogrammable Flash Memory. Its 2

megabits of memory is organized as 262,144 words by 8 bits. Manufactured with

Atmel鈥檚 advanced nonvolatile CMOS technology, the device offers access times to 55

ns with power dissipation of just 275 mW over the commercial temperature range.

2-Megabit

(256K x 8)

5-volt Only

CMOS Flash

Memory

AT49F002T

AT49F002NT

Pin Configurations

Pin Name

A0 - A17

CE

OE

WE

RESET

I/O0 - I/O7

NC

Function

Addresses

Chip Enable

Output Enable

Write Enable

RESET

Data Inputs/Outputs

No Connect

PLCC Top View

A12

A15

A16

RESET *

VCC

WE

A17

(continued)

DIP Top View

* RESET

A16

A15

A12

A7

A6

A5

A4

A3

A2

A1

A0

I/O0

I/O1

I/O2

GND

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

32

31

30

29

28

27

26

25

24

23

22

21

20

19

18

17

VCC

WE

A17

A14

A13

A8

A9

A11

OE

A10

CE

I/O7

I/O6

I/O5

I/O4

I/O3

TSOP Top View

Type 1

A11

A9

A8

A13

A14

A17

WE

VCC

* RESET

A16

A15

A12

A7

A6

A5

A4

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

32

31

30

29

28

27

26

25

24

23

22

21

20

19

18

17

OE

A10

CE

I/O7

I/O6

I/O5

I/O4

I/O3

GND

I/O2

I/O1

I/O0

A0

A1

A2

A3

I/O1

I/O2

GND

I/O3

I/O4

I/O5

I/O6

14

15

16

17

18

19

20

A7

A6

A5

A4

A3

A2

A1

A0

I/O0

5

6

7

8

9

10

11

12

13

4

3

2

1

32

31

30

29

28

27

26

25

24

23

22

21

A14

A13

A8

A9

A11

OE

A10

CE

I/O7

0920B-B鈥?2/97

*Note: This pin is a NC on the AT49F002NT.

1

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