28F1602C3, 28F1604C3, 28F3204C3
iv
Preliminary
4.7
4.8
4.9
4.10
4.11
Migration Guide Information
...............................................................................32
System Design Considerations
..........................................................................33
6.1
Background.........................................................................................................33
6.1.1
Flash + SRAM Footprint Integration.......................................................33
6.1.2
Advanced+ Boot Block Flash Memory Features....................................33
6.2
Flash Control Considerations..............................................................................33
6.2.1
F-RP# Connected to System Reset.......................................................34
6.2.2
F-V
CC
, F-V
PP
and F-RP# Transition.......................................................34
6.3
Noise Reduction..................................................................................................35
6.4
Simultaneous Operation......................................................................................36
6.4.1
SRAM Operation during Flash “Busy”....................................................36
6.4.2
Simultaneous Bus Operations................................................................37
6.5
Printed Circuit Board Notes.................................................................................37
6.6
System Design Notes Summary .........................................................................37
Ordering Information
..............................................................................................38
Additional Information
...........................................................................................38
Flash Erase and Program Timings......................................................................25
Flash Reset Operations ......................................................................................27
SRAM AC Characteristics—Read Operations ....................................................28
SRAM AC Characteristics—Write Operations ....................................................30
SRAM Data Retention Characteristics—Extended Temperature........................31
5.0
6.0
7.0
8.0
Appendix A
Appendix B
Appendix C
Appendix D
Appendix E
Appendix F
Program/Erase Flowcharts
.............................................................................39
CFI Query Structure
...........................................................................................45
Word-Wide Memory Map Diagrams
.............................................................52
Device ID Table
....................................................................................................54
Protection Register Addressing
...................................................................55
Mechanical and Shipping Media Details
...................................................56