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Preliminary
iii
28F128J3A, 28F640J3A, 28F320J3A
Contents
1.0
2.0
Product Overview
.......................................................................................................1
Principles of Operation
............................................................................................6
2.1
Data Protection......................................................................................................6
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
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
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
3.0
4.0
5.0