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ST STM32F101 series Reference Manual

ST STM32F101 series
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DocID13902 Rev 15 6/1128
RM0008 Contents
26
9.3.2 Using OSC_IN/OSC_OUT pins as GPIO ports PD0/PD1 . . . . . . . . . . 175
9.3.3 CAN1 alternate function remapping . . . . . . . . . . . . . . . . . . . . . . . . . . . 176
9.3.4 CAN2 alternate function remapping . . . . . . . . . . . . . . . . . . . . . . . . . . . 176
9.3.5 JTAG/SWD alternate function remapping . . . . . . . . . . . . . . . . . . . . . . 176
9.3.6 ADC alternate function remapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
9.3.7 Timer alternate function remapping . . . . . . . . . . . . . . . . . . . . . . . . . . . 178
9.3.8 USART alternate function remapping . . . . . . . . . . . . . . . . . . . . . . . . . 180
9.3.9 I2C1 alternate function remapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181
9.3.10 SPI1 alternate function remapping . . . . . . . . . . . . . . . . . . . . . . . . . . . 181
9.3.11 SPI3/I2S3 alternate function remapping . . . . . . . . . . . . . . . . . . . . . . . 181
9.3.12 Ethernet alternate function remapping . . . . . . . . . . . . . . . . . . . . . . . . 181
9.4 AFIO registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183
9.4.1 Event control register (AFIO_EVCR) . . . . . . . . . . . . . . . . . . . . . . . . . . 183
9.4.2 AF remap and debug I/O configuration register (AFIO_MAPR) . . . . . . 184
9.4.3 External interrupt configuration register 1 (AFIO_EXTICR1) . . . . . . . . 191
9.4.4 External interrupt configuration register 2 (AFIO_EXTICR2) . . . . . . . . 191
9.4.5 External interrupt configuration register 3 (AFIO_EXTICR3) . . . . . . . . 192
9.4.6 External interrupt configuration register 4 (AFIO_EXTICR4) . . . . . . . . 192
9.4.7 AF remap and debug I/O configuration register2 (AFIO_MAPR2) . . . . 193
9.5 GPIO and AFIO register maps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194
10 Interrupts and events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196
10.1 Nested vectored interrupt controller (NVIC) . . . . . . . . . . . . . . . . . . . . . . 196
10.1.1 SysTick calibration value register . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196
10.1.2 Interrupt and exception vectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197
10.2 External interrupt/event controller (EXTI) . . . . . . . . . . . . . . . . . . . . . . . . 205
10.2.1 Main features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206
10.2.2 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206
10.2.3 Wakeup event management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206
10.2.4 Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
10.2.5 External interrupt/event line mapping . . . . . . . . . . . . . . . . . . . . . . . . . 208
10.3 EXTI registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 210
10.3.1 Interrupt mask register (EXTI_IMR) . . . . . . . . . . . . . . . . . . . . . . . . . . . 210
10.3.2 Event mask register (EXTI_EMR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 210
10.3.3 Rising trigger selection register (EXTI_RTSR) . . . . . . . . . . . . . . . . . . 211
10.3.4 Falling trigger selection register (EXTI_FTSR) . . . . . . . . . . . . . . . . . . 211
10.3.5 Software interrupt event register (EXTI_SWIER) . . . . . . . . . . . . . . . . . 212

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ST STM32F101 series Specifications

General IconGeneral
BrandST
ModelSTM32F101 series
CategoryComputer Hardware
LanguageEnglish

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