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Single Voltage, Range 3V to 3.6V Supply

3-volt Only Read and Write Operation

Software Protected Programming

Fast Read Access Time - 150 ns

Low Power Dissipation

鈥?15 mA Active Current

鈥?40 碌A(chǔ) CMOS Standby Current

Sector Program Operation

鈥?Single Cycle Reprogram (Erase and Program)

鈥?2048 Sectors (256 Bytes/Sector)

鈥?Internal Address and Data Latches for 256 Bytes

Two 16K Bytes Boot Blocks with Lockout

Fast Sector Program Cycle Time - 20 ms Max.

Internal Program Control and Timer

DATA Polling for End of Program Detection

Typical Endurance > 10,000 Cycles

CMOS and TTL Compatible Inputs and Outputs

Commercial and Industrial Temperature Ranges

鈥?/div>

4-megabit

(512K x 8)

3-volt Only

256-byte Sector

Flash Memory

AT29LV040A

Description

The AT29LV040A is a 3-volt only in-system Flash Programmable and Erasable Read

Only Memory (PEROM). Its 4 megabits of memory is organized as 524,288 words by

8 bits. Manufactured with Atmel鈥檚 advanced nonvolatile CMOS EEPROM technology,

the device offers access times to 150 ns, and a low 54 mW power dissipation. When

the device is deselected, the CMOS standby current is less than 40 碌A(chǔ). The device

endurance is such that any sector can typically be written to in excess of 10,000 times.

The programming algorithm is compatible with other devices in Atmel鈥檚 3-volt only

Flash memories.

Pin Configurations

Pin Name

A0 - A18

CE

OE

WE

I/O0 - I/O7

NC

Function

Addresses

Chip Enable

Output Enable

Write Enable

Data Inputs/Outputs

No Connect

A11

A9

A8

A13

A14

A17

WE

VCC

A18

A16

A15

A12

A7

A6

A5

A4

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

TSOP Top View

Type 1

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

PLCC Top View

4

3

2

1

32

31

30

A12

A15

A16

A18

VCC

WE

A17

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

29

28

27

26

25

24

23

22

21

A14

A13

A8

A9

A11

OE

A10

CE

I/O7

Rev. 0334F鈥揊LASH鈥?5/02

1

型號

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描述

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