Information

Section Number Title Page
Chapter 28
Flash Memory Module (FTFL)
28.1 Introduction...................................................................................................................................................................495
28.1.1 Features........................................................................................................................................................496
28.1.2 Block Diagram.............................................................................................................................................497
28.1.3 Glossary.......................................................................................................................................................498
28.2 External Signal Description..........................................................................................................................................500
28.3 Memory Map and Registers..........................................................................................................................................500
28.3.1 Flash Configuration Field Description.........................................................................................................501
28.3.2 Program Flash IFR Map...............................................................................................................................501
28.3.3 Data Flash IFR Map.....................................................................................................................................502
28.3.4 Register Descriptions...................................................................................................................................504
28.4 Functional Description..................................................................................................................................................516
28.4.1 Flash Protection............................................................................................................................................516
28.4.2 FlexNVM Description..................................................................................................................................518
28.4.3 Interrupts......................................................................................................................................................522
28.4.4 Flash Operation in Low-Power Modes........................................................................................................523
28.4.5 Functional Modes of Operation...................................................................................................................523
28.4.6 Flash Reads and Ignored Writes..................................................................................................................523
28.4.7 Read While Write (RWW)...........................................................................................................................524
28.4.8 Flash Program and Erase..............................................................................................................................524
28.4.9 Flash Command Operations.........................................................................................................................524
28.4.10 Margin Read Commands.............................................................................................................................531
28.4.11 Flash Command Description........................................................................................................................532
28.4.12 Security........................................................................................................................................................553
28.4.13 Reset Sequence............................................................................................................................................555
K20 Sub-Family Reference Manual, Rev. 2, Feb 2012
Freescale Semiconductor, Inc. 21