M031/M032
6.2.13System Timer (SysTick)...............................................................................................131
6.2.14Nested Vectored Interrupt Controller (NVIC)............................................................136
6.2.15System Control Register .............................................................................................152
6.3 Clock Controller ......................................................................................................... 162
6.3.1 Overview........................................................................................................................162
6.3.2 Clock Generator............................................................................................................164
6.3.3 System Clock and SysTick Clock...............................................................................165
6.3.4 Peripherals Clock .........................................................................................................166
6.3.5 Power-down Mode Clock ............................................................................................166
6.3.6 Clock Output .................................................................................................................167
6.3.7 USB Clock Source........................................................................................................167
6.3.8 Register Map.................................................................................................................169
6.3.9 Register Description.....................................................................................................170
6.4 Flash Memory Controller (FMC).............................................................................. 198
6.4.1 Overview........................................................................................................................198
6.4.2 Features.........................................................................................................................198
6.5 General Purpose I/O (GPIO) ................................................................................... 199
6.5.1 Overview........................................................................................................................199
6.5.2 Features.........................................................................................................................199
6.6 PDMA Controller (PDMA)......................................................................................... 200
6.6.1 Overview........................................................................................................................200
6.6.2 Features.........................................................................................................................200
6.7 Timer Controller (TMR)............................................................................................. 201
6.7.1 Overview........................................................................................................................201
6.7.2 Features.........................................................................................................................201
6.8 Watchdog Timer (WDT)............................................................................................ 202
6.8.1 Overview........................................................................................................................202
6.8.2 Features.........................................................................................................................202
6.9 Window Watchdog Timer (WWDT)......................................................................... 203
6.9.1 Overview........................................................................................................................203
6.9.2 Features.........................................................................................................................203
6.10 PWM Generator and Capture Timer (PWM) ................................................... 204
6.10.1Overview........................................................................................................................204
6.10.2Features.........................................................................................................................204
6.11 UART Interface Controller (UART) ................................................................... 206
6.11.1Overview........................................................................................................................206
6.11.2Features.........................................................................................................................206
6.12 Serial Peripheral Interface (SPI) ....................................................................... 208
6.12.1Overview........................................................................................................................208
6.12.2Features.........................................................................................................................208
Feb 25, 2019
Page 3 of 274
Rev. 1.01