1

AT49F1025 VSOP Top View

Type 1

10 x 14 mm

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40

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A0

A1

A2

A3

A4

A5

A6

A7

A8

GND

A9

A10

A11

A12

A13

A14

A15

NC

WE

VCC

OE

I/O0

I/O1

I/O2

I/O3

I/O4

I/O5

I/O6

I/07

GND

I/O8

I/O9

I/O10

I/O11

I/O12

I/O13

I/O14

I/O15

NC

CE

10 x 14 mm

PLCC Top View

7

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39

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29

I/O12

I/O11

I/O10

I/O9

I/O8

GND

NC

I/O7

I/O6

I/O5

I/O4

A13

A12

A11

A10

A9

GND

NC

A8

A7

A6

A5

Features

– 5V Read

– 5V Reprogramming

µµµµs/Word Typical

Description

The AT49F1024 and the AT49F1025 are 5-volt-only in-system Flash Memories. Their

1 megabit of memory is organized as 65,536 words by 16 bits. Manufactured with

Atmel’s advanced nonvolatile CMOS technology, the devices offer access times to 45

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

When the device is deselected, the CMOS standby current is less than 100

µA. The

only difference between the AT49F1024 and the AT49F1025 is the pinout. The

AT49F1024 is pin compatable with the AT27C1024, and the AT49F1025 is pin com-

patable with the AT29C1024.

Rev. 0765D–09/98

1-Megabit

(64K x 16)

5-volt Only

Flash Memory

AT49F1024

AT49F1025

Pin Configurations

Pin Name

Function

A0 - A15

Addresses

CE

Chip Enable

OE

Output Enable

WE

Write Enable

I/O0 - I/O15

Data Inputs/Outputs

NC

No Connect

(continued)

AT49F1024 VSOP Top View

Type 1

10 x 14 mm

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

A9

A10

A11

A12

A13

A14

A15

NC

WE

VCC

NC

CE

I/O15

I/O14

I/O13

I/O12

I/O11

I/O10

I/O9

I/O8

GND

A8

A7

A6

A5

A4

A3

A2

A1

A0

OE

I/O0

I/O1

I/O2

I/O3

I/O4

I/O5

I/O6

I/O7

GND