Section number Title Page3.6.1 CRC Configuration...................................................................................................................................... 953.6.2 RNG Configuration......................................................................................................................................963.7 Analog...........................................................................................................................................................................973.7.1 16-bit SAR ADC Configuration.................................................................................................................. 973.7.2 CMP Configuration......................................................................................................................................1043.7.3 12-bit DAC Configuration........................................................................................................................... 1063.7.4 VREF Configuration.................................................................................................................................... 1073.8 Timers........................................................................................................................................................................... 1083.8.1 PDB Configuration...................................................................................................................................... 1083.8.2 FlexTimer Configuration............................................................................................................................. 1113.8.3 PIT Configuration........................................................................................................................................ 1173.8.4 Low-power timer configuration................................................................................................................... 1183.8.5 RTC configuration....................................................................................................................................... 1203.9 Communication interfaces............................................................................................................................................ 1213.9.1 Universal Serial Bus (USB) FS Subsystem................................................................................................. 1213.9.2 SPI configuration......................................................................................................................................... 1263.9.3 I2C Configuration........................................................................................................................................ 1303.9.4 UART Configuration................................................................................................................................... 1313.9.5 LPUART configuration................................................................................................................................1333.9.6 I2S configuration..........................................................................................................................................1343.10 Human-machine interfaces........................................................................................................................................... 1373.10.1 GPIO configuration......................................................................................................................................137Chapter 4Memory Map4.1 Introduction...................................................................................................................................................................1394.2 System memory map.....................................................................................................................................................1394.2.1 Aliased bit-band regions.............................................................................................................................. 1414.2.2 Flash Access Control Introduction...............................................................................................................1424.3 Flash Memory Map.......................................................................................................................................................142K22F Sub-Family Reference Manual, Rev. 4, 08/2016NXP Semiconductors 5
