JS28F256P30B95A datasheet(3/97 Pages) MICRON

3 / 97 page

August 2008

Datasheet

306666-12

P30

Contents

1.0

Functional Description............................................................................................... 5

1.1

Introduction ....................................................................................................... 5

1.2

Overview ........................................................................................................... 5

1.3

Virtual Chip Enable Description.............................................................................. 6

1.4

Memory Maps ..................................................................................................... 6

2.0

Package Information .................................................................................................9

2.1

56-Lead TSOP..................................................................................................... 9

2.2

64-Ball Easy BGA Package .................................................................................. 10

2.3

QUAD+ SCSP Packages...................................................................................... 12

3.0

Ballouts ................................................................................................................... 15

4.0

Signals .................................................................................................................... 18

4.1

Dual-Die Configurations ..................................................................................... 20

5.0

Bus Operations ........................................................................................................ 21

5.1

Reads .............................................................................................................. 21

5.2

Writes.............................................................................................................. 21

5.3

Output Disable.................................................................................................. 21

5.4

Standby ........................................................................................................... 22

5.5

Reset............................................................................................................... 22

6.0

Command Set .......................................................................................................... 23

6.1

Device Command Codes..................................................................................... 23

6.2

Device Command Bus Cycles .............................................................................. 24

7.0

Read Operation........................................................................................................ 26

7.1

Asynchronous Page-Mode Read ........................................................................... 26

7.2

Synchronous Burst-Mode Read............................................................................ 26

7.3

Read Device Identifier........................................................................................ 27

7.4

Read CFI.......................................................................................................... 27

8.0

Program Operation .................................................................................................. 28

8.1

Word Programming ........................................................................................... 28

8.2

Factory Word Programming ................................................................................ 29

8.3

Buffered Programming ....................................................................................... 29

8.4

Buffered Enhanced Factory Programming.............................................................. 30

8.4.1

BEFP Requirements and Considerations ..................................................... 30

8.4.2

BEFP Setup Phase .................................................................................. 31

8.4.3

BEFP Program/Verify Phase ..................................................................... 31

8.4.4

BEFP Exit Phase ..................................................................................... 32

8.5

Program Suspend.............................................................................................. 32

8.6

Program Resume............................................................................................... 32

8.7

Program Protection............................................................................................ 33

9.0

Erase Operations ..................................................................................................... 34

9.1

Block Erase ...................................................................................................... 34

9.2

Erase Suspend .................................................................................................. 34

9.3

Erase Resume................................................................................................... 35

9.4

Erase Protection................................................................................................ 35

10.0 Security Modes ........................................................................................................ 36

10.1 Block Locking.................................................................................................... 36

10.1.1 Lock Block............................................................................................. 36

10.1.2 Unlock Block.......................................................................................... 36

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