Datasheet
3
28F320W30, 28F640W30, 28F128W30
Contents
1.0
Introduction
...............................................................................................................................7
1.1
Document Purpose................................................................................................................7
1.2
Nomenclature.........................................................................................................................7
1.3
Conventions...........................................................................................................................7
Device Description
..................................................................................................................8
2.1
Product Overview...................................................................................................................8
2.2
Package Diagram ................................................................................................................10
2.3
Signal Descriptions..............................................................................................................11
2.4
Memory Map and Partitioning..............................................................................................12
Device Operations
.................................................................................................................14
3.1
Bus Operations....................................................................................................................15
3.1.1
Read .......................................................................................................................15
3.1.2
Burst Suspend ........................................................................................................16
3.1.3
Standby...................................................................................................................16
3.1.4
Reset.......................................................................................................................16
3.1.5
Write........................................................................................................................17
3.2
Device Commands...............................................................................................................17
3.3
Command Sequencing ........................................................................................................20
Read Operations
....................................................................................................................21
4.1
Read Array...........................................................................................................................21
4.2
Read Device ID....................................................................................................................21
4.3
Read Query (CFI) ................................................................................................................22
4.4
Read Status Register...........................................................................................................22
4.5
Clear Status Register...........................................................................................................24
Program Operations
.............................................................................................................24
5.1
Word Program......................................................................................................................24
5.2
Factory Programming ..........................................................................................................26
5.3
Enhanced Factory Program (EFP).......................................................................................27
5.3.1
EFP Requirements and Considerations..................................................................27
5.3.2
Setup.......................................................................................................................28
5.3.3
Program..................................................................................................................28
5.3.4
Verify.......................................................................................................................28
5.3.5
Exit..........................................................................................................................29
Program and Erase Operations
.......................................................................................31
6.1
Program/Erase Suspend and Resume................................................................................31
6.2
Block Erase..........................................................................................................................33
6.3
Read-While-Write and Read-While-Erase...........................................................................35
Security Modes
.......................................................................................................................36
7.1
Block Lock Operations.........................................................................................................36
7.1.1
Lock ........................................................................................................................37
7.1.2
Unlock.....................................................................................................................37
2.0
3.0
4.0
5.0
6.0
7.0