Power Port B Pull-Down Control Register (Pwr_Pdcrb); Power Port C Pull-Up Control Register (Pwr_Pucrc) - ST STM32L4 5 Series Reference Manual

RM0351
31 30 29
Res. Res. Res. Res.
15 14 13
PU15 PU14 PU13 PU12
rw rw rw
Bits 31:16 Reserved, must be kept at reset value.
Bits 15:0 PUy: Port B pull-up bit y (y=0..15)
When set, this bit activates the pull-up on PB[y] when APC bit is set in PWR_CR3 register.
The pull-up is not activated if the corresponding PDy bit is also set.
5.4.11

Power Port B pull-down control register (PWR_PDCRB)

Address offset: 0x2C.
Reset value: 0x0000 0000. This register is not reset when exiting Standby modes and with
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).
31 30 29
Res. Res. Res. Res.
15 14 13
PD15 PD14 PD13 PD12
rw rw rw
Bits 31:16 Reserved, must be kept at reset value.
Bits 15:5 PDy: Port B pull-down bit y (y=5..15)
When set, this bit activates the pull-down on PB[y] when APC bit is set in PWR_CR3 register.
Bit 4 Reserved, must be kept at reset value.
Bits 3:0 PDy: Port B pull-down bit y (y=0..3)
When set, this bit activates the pull-down on PB[y] when APC bit is set in PWR_CR3 register.
5.4.12

Power Port C pull-up control register (PWR_PUCRC)

Address offset: 0x30.
Reset value: 0x0000 0000. This register is not reset when exiting Standby modes and with
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).
28 27 26 25
Res. Res. Res.
12 11 10 9
PU11 PU10 PU9
rw rw rw rw
28 27 26 25
Res. Res. Res.
12 11 10 9
PD11 PD10 PD9
rw rw rw rw
DocID024597 Rev 5
24 23 22 21
Res. Res. Res. Res.
8 7 6 5
PU8 PU7 PU6 PU5
rw rw rw rw
24 23 22 21
Res. Res. Res. Res.
8 7 6 5
PD8 PD7 PD6 PD5
rw rw rw rw
Power control (PWR)
20 19 18 17
Res. Res. Res. Res.
4 3 2 1
PU4 PU3 PU2 PU1
rw rw rw rw
20 19 18 17
Res. Res. Res. Res.
4 3 2 1
Res. PD3 PD2 PD1
rw rw rw
16
Res.
0
PU0
rw
16
Res.
0
PD0
rw
189/1830
198