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RM0312 Datasheet(PDF) 72 Page - STMicroelectronics |
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RM0312 Datasheet(HTML) 72 Page - STMicroelectronics |
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72 / 275 page  Power management RM0312 72/275 DocID022352 Rev 3 In Active-halt mode with ProxSense, the HSI and LSI oscillators, the CPU and almost all the peripherals are stopped. Only the HSI_PXS oscillator is running to drive the analog ProxSense system. The Main Voltage Regulator (MVR) is always kept ON, the MCU core clock is switched OFF and all registers and RAM contents are preserved. 9.5 WFE registers These registers are used to configure different interrupt sources as external interrupts or WFE events. Refer to Section : Wait for event (WFE) mode on page 70 9.5.1 WFE control register 1 (WFE_CR1) Address Offset: 0x00 Reset value: 0x00 7 654 3210 EXTI_EV3 EXTI_EV2 EXTI_EV1 EXTI_EV0 PXS_EV Reserved TIM2_EV1 TIM2_EV0 rw rw rw rw rw rw rw Bit 7 EXTI_EV3: External interrupt event 3 0: Interrupt sources from pin 3 of all ports generate external interrupts. 1: Interrupt sources from pin 3 of all ports generate WFE events (no interrupt serviced). This bit is written by software. Bit 6 EXTI_EV2: External interrupt event 2 0: Interrupt sources from pin 2 of all ports generate external interrupts. 1: Interrupt sources from pin 2 of all ports generate WFE events (no interrupt serviced). This bit is written by software. Bit 5 EXTI_EV1: External interrupt event 1 0: Interrupt sources from pin 1 of all ports generate external interrupts. 1: Interrupt sources from pin 1 of all ports generate WFE events (no interrupt serviced). This bit is written by software. Bit 4 EXTI_EV0: External interrupt event 0 0: Interrupt sources from pin 0 of all ports generate external interrupts. 1: Interrupt sources from pin 0 of all ports generate WFE events (no interrupt serviced). This bit is written by software. Bit 3 PXS_EV: ProxSense interrupt 0: PXS interrupt sources generate external interrupts. 1: PXS interrupt sources logically ORed and configured to generate WFE events (no interrupt serviced). This bit is written by software. Bit 2 Reserved |
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