ST STM32G431 User Manual

Power control (PWR) RM0440
258/2126 RM0440 Rev 4
6.4.4 Power control register 4 (PWR_CR4)
Address offset: 0x0C
Reset value: 0x0000 0000. This register is not reset when exiting Standby modes and with
the PWRRST bit in the RCC_APB1RSTR1 register.
Access: Additional APB cycles are needed to access this register vs. a standard APB
access (3 for a write and 2 for a read).
Bit 2 EWUP3: Enable Wakeup pin WKUP3
When this bit is set, the external wakeup pin WKUP3 is enabled and triggers a wakeup from
Standby or Shutdown event when a rising or a falling edge occurs. The active edge is
configured via the WP3 bit in the PWR_CR4 register.
Bit 1 EWUP2: Enable Wakeup pin WKUP2
When this bit is set, the external wakeup pin WKUP2 is enabled and triggers a wakeup from
Standby or Shutdown event when a rising or a falling edge occurs. The active edge is
configured via the WP2 bit in the PWR_CR4 register.
Bit 0 EWUP1: Enable Wakeup pin WKUP1
When this bit is set, the external wakeup pin WKUP1 is enabled and triggers a wakeup from
Standby or Shutdown event when a rising or a falling edge occurs. The active edge is
configured via the WP1 bit in the PWR_CR4 register.
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
Res. Res. Res. Res. Res. Res. Res. Res. Res. Res. Res. Res. Res. Res. Res. Res.
1514131211109876543210
Res. Res. Res. Res. Res. Res. VBRS VBE Res. Res. Res. WP5 WP4 WP3 WP2 WP1
rw rw rw rw rw rw rw
Bits 31:10 Reserved, must be kept at reset value.
Bit 9 VBRS: V
BAT
battery charging resistor selection
0: Charge V
BAT
through a 5 kOhms resistor
1: Charge V
BAT
through a 1.5 kOhms resistor
Bit 8 VBE: V
BAT
battery charging enable
0: V
BAT
battery charging disable
1: V
BAT
battery charging enable
Bits 7:5 Reserved, must be kept at reset value.
Bit 4 WP5: Wakeup pin WKUP5 polarity
This bit defines the polarity used for an event detection on external wake-up pin, WKUP5
0: Detection on high level (rising edge)
1: Detection on low level (falling edge)
Bit 3 WP4: Wakeup pin WKUP4 polarity
This bit defines the polarity used for an event detection on external wake-up pin, WKUP4
0: Detection on high level (rising edge)
1: Detection on low level (falling edge)

ST STM32G431 Specifications

General

Brand	ST
Model	STM32G431
Category	Microcontrollers
Language	English