Information

Section Number Title Page
3.5.3 SRAM Configuration...................................................................................................................................88
3.5.4 System Register File Configuration.............................................................................................................91
3.5.5 VBAT Register File Configuration..............................................................................................................91
3.5.6 EzPort Configuration...................................................................................................................................92
3.6 Security.........................................................................................................................................................................93
3.6.1 CRC Configuration......................................................................................................................................93
3.7 Analog...........................................................................................................................................................................94
3.7.1 16-bit SAR ADC Configuration..................................................................................................................94
3.7.2 CMP Configuration......................................................................................................................................98
3.7.3 VREF Configuration....................................................................................................................................100
3.8 Timers...........................................................................................................................................................................101
3.8.1 PDB Configuration......................................................................................................................................101
3.8.2 FlexTimer Configuration.............................................................................................................................104
3.8.3 PIT Configuration........................................................................................................................................107
3.8.4 Low-power timer configuration...................................................................................................................108
3.8.5 CMT Configuration......................................................................................................................................110
3.8.6 RTC configuration.......................................................................................................................................111
3.9 Communication interfaces............................................................................................................................................112
3.9.1 Universal Serial Bus (USB) FS Subsystem.................................................................................................112
3.9.2 SPI configuration.........................................................................................................................................117
3.9.3 I2C Configuration........................................................................................................................................120
3.9.4 UART Configuration...................................................................................................................................121
3.9.5 I2S configuration..........................................................................................................................................123
3.10 Human-machine interfaces (HMI)................................................................................................................................127
3.10.1 GPIO configuration......................................................................................................................................127
3.10.2 TSI Configuration........................................................................................................................................128
Chapter 4
Memory Map
4.1 Introduction...................................................................................................................................................................131
K20 Sub-Family Reference Manual, Rev. 2, Feb 2012
Freescale Semiconductor, Inc. 5