Section number Title Page
3.4.6 Caches............................................................................................................................................................ 54
3.4.7 Interrupt connections......................................................................................................................................55
3.4.8 Asynchronous Wake-up Interrupt Controller (AWIC).................................................................................. 59
3.5 System Modules............................................................................................................................................................60
3.5.1 Crossbar Switch............................................................................................................................................. 60
3.5.2 Low-Leakage Wake-up Unit (LLWU)...........................................................................................................61
3.5.3 DMAMUXs................................................................................................................................................... 63
3.5.4 Watchdog (WDOG)....................................................................................................................................... 65
3.5.5 System Register File Configuration...............................................................................................................65
3.5.6 Peripheral Clock Control (PCC) Configuration.............................................................................................66
3.5.7 System Register File Configuration...............................................................................................................66
3.6 Security......................................................................................................................................................................... 67
3.6.1 CAU Configuration........................................................................................................................................67
3.7 Analog...........................................................................................................................................................................68
3.7.1 16-bit SAR ADC configuration..................................................................................................................... 68
3.7.2 CMP configuration.........................................................................................................................................71
3.7.3 VREF............................................................................................................................................................. 73
3.7.4 12-bit DAC configuration.............................................................................................................................. 75
3.8 Timers........................................................................................................................................................................... 76
3.8.1 Timer/PWM module configuration................................................................................................................76
3.8.2 LPIT............................................................................................................................................................... 78
3.8.3 Low Power Timer (LPTMR)......................................................................................................................... 79
3.8.4 RTC configuration......................................................................................................................................... 80
3.9 Communication interfaces............................................................................................................................................ 81
3.9.1 Universal Serial Bus (USB) FS Subsystem................................................................................................... 81
3.9.2 LPSPI configuration.......................................................................................................................................87
3.9.3 LPI2C.............................................................................................................................................................88
3.9.4 LPUART configuration..................................................................................................................................89
3.9.5 EMVSIM Configuration................................................................................................................................ 90
KL28Z Reference Manual, Rev. 4, 06/2016
4 NXP Semiconductors