Section number Title Page
3.2.2 Nested Vectored Interrupt Controller (NVIC) Configuration......................................................................59
3.2.3 Asynchronous Wake-up Interrupt Controller (AWIC) Configuration.........................................................65
3.2.4 FPU Configuration.......................................................................................................................................66
3.2.5 JTAG Controller Configuration...................................................................................................................66
3.3 System modules............................................................................................................................................................ 67
3.3.1 SIM Configuration....................................................................................................................................... 67
3.3.2 System Mode Controller (SMC) Configuration...........................................................................................68
3.3.3 PMC Configuration......................................................................................................................................68
3.3.4 Low-Leakage Wake-up Unit (LLWU) Configuration.................................................................................69
3.3.5 MCM Configuration.................................................................................................................................... 71
3.3.6 Crossbar-Light Switch Configuration..........................................................................................................71
3.3.7 Peripheral Bridge Configuration..................................................................................................................73
3.3.8 DMA request multiplexer configuration......................................................................................................74
3.3.9 DMA Controller Configuration................................................................................................................... 77
3.3.10 External Watchdog Monitor (EWM) Configuration....................................................................................78
3.3.11 Watchdog Configuration..............................................................................................................................80
3.4 Clock modules.............................................................................................................................................................. 81
3.4.1 MCG Configuration..................................................................................................................................... 81
3.4.2 OSC Configuration...................................................................................................................................... 82
3.4.3 RTC OSC configuration...............................................................................................................................83
3.5 Memories and memory interfaces.................................................................................................................................84
3.5.1 Flash Memory Configuration.......................................................................................................................84
3.5.2 Flash Memory Controller Configuration..................................................................................................... 87
3.5.3 SRAM Configuration...................................................................................................................................87
3.5.4 System Register File Configuration.............................................................................................................89
3.5.5 VBAT Register File Configuration..............................................................................................................90
3.5.6 EzPort Configuration................................................................................................................................... 91
3.5.7 FlexBus Configuration.................................................................................................................................92
3.6 Security......................................................................................................................................................................... 95
K22F Sub-Family Reference Manual, Rev. 4, 08/2016
4 NXP Semiconductors