28F128 datasheet(3/58 Pages) INTEL

3 / 58 page

Preliminary

iii

28F128J3A, 28F640J3A, 28F320J3A

Contents

1.0

Product Overview.......................................................................................................1

2.0

Principles of Operation............................................................................................6

2.1

Data Protection...................................................................................................... 6

3.0

Bus Operations ...........................................................................................................7

3.1

Read...................................................................................................................... 8

3.2

Output Disable....................................................................................................... 8

3.3

Standby ................................................................................................................. 8

3.4

Reset/Power-Down ............................................................................................... 8

3.5

Read Query ........................................................................................................... 9

3.6

Read Identifier Codes............................................................................................ 9

3.7

Write ...................................................................................................................... 9

4.0

Command Definitions...............................................................................................9

4.1

Read Array Command.........................................................................................13

4.2

Read Query Mode Command ............................................................................. 13

4.2.1

Query Structure Output .......................................................................... 13

4.2.2

Query Structure Overview ...................................................................... 14

4.2.3

Block Status Register ............................................................................. 15

4.2.4

CFI Query Identification String ...............................................................15

4.2.5

System Interface Information ................................................................. 16

4.2.6

Device Geometry Definition.................................................................... 17

4.2.7

Primary-Vendor Specific Extended Query Table.................................... 18

4.3

Read Identifier Codes Command ........................................................................ 19

4.4

Read Status Register Command......................................................................... 20

4.5

Clear Status Register Command......................................................................... 22

4.6

Block Erase Command........................................................................................ 22

4.7

Block Erase Suspend Command ........................................................................ 22

4.8

Write to Buffer Command.................................................................................... 23

4.9

Byte/Word Program Commands ......................................................................... 24

4.10

Program Suspend Command.............................................................................. 24

4.11

Set Read Configuration Command .....................................................................24

4.11.1 Read Configuration ................................................................................ 25

4.12

Configuration Command ..................................................................................... 25

4.13

Set Block Lock-Bit Commands............................................................................26

4.14

Clear Block Lock-Bits Command......................................................................... 27

4.15

Protection Register Program Command ............................................................. 27

4.15.1 Reading the Protection Register ............................................................ 27

4.15.2 Programming the Protection Register .................................................... 27

4.15.3 Locking the Protection Register ............................................................. 28

5.0

Design Considerations ..........................................................................................38

5.1

Three-Line Output Control................................................................................... 38

5.2

STS and Block Erase, Program, and Lock-Bit Configuration Polling ..................38

5.3

Power Supply Decoupling ................................................................................... 38

5.4

Input Signal Transitions - Reducing Overshoots and Undershoots When Using

28F128 Datasheet(PDF) 3 Page - Intel Corporation

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