Information
Section Number Title Page
13.2 Reset memory map and register descriptions...............................................................................................................251
13.2.1 System Reset Status Register 0 (RCM_SRS0)............................................................................................251
13.2.2 System Reset Status Register 1 (RCM_SRS1)............................................................................................253
13.2.3 Reset Pin Filter Control Register (RCM_RPFC).........................................................................................255
13.2.4 Reset Pin Filter Width Register (RCM_RPFW)..........................................................................................256
13.2.5 Mode Register (RCM_MR).........................................................................................................................257
Chapter 14
System Mode Controller
14.1 Introduction...................................................................................................................................................................259
14.2 Modes of operation.......................................................................................................................................................259
14.3 Memory map and register descriptions.........................................................................................................................261
14.3.1 Power Mode Protection Register (SMC_PMPROT)...................................................................................262
14.3.2 Power Mode Control Register (SMC_PMCTRL).......................................................................................263
14.3.3 VLLS Control Register (SMC_VLLSCTRL)..............................................................................................265
14.3.4 Power Mode Status Register (SMC_PMSTAT)..........................................................................................266
14.4 Functional Description..................................................................................................................................................266
14.4.1 Power mode transitions................................................................................................................................266
14.4.2 Power mode entry/exit sequencing..............................................................................................................269
14.4.3 Run modes....................................................................................................................................................272
14.4.4 Wait modes..................................................................................................................................................273
14.4.5 Stop modes...................................................................................................................................................274
14.4.6 Debug in low power modes.........................................................................................................................277
Chapter 15
Power Management Controller
15.1 Introduction...................................................................................................................................................................279
15.2 Features.........................................................................................................................................................................279
15.3 Low-voltage detect (LVD) system................................................................................................................................279
15.3.1 LVD reset operation.....................................................................................................................................280
15.3.2 LVD interrupt operation...............................................................................................................................280
K20 Sub-Family Reference Manual, Rev. 2, Feb 2012
Freescale Semiconductor, Inc. 11