block/PWR:
  description: Power control.
  items:
  - name: PMCR
    description: PWR power mode control register.
    byte_offset: 0
    fieldset: PMCR
  - name: PMSR
    description: PWR status register.
    byte_offset: 4
    fieldset: PMSR
  - name: VOSCR
    description: PWR voltage scaling control register.
    byte_offset: 16
    fieldset: VOSCR
  - name: VOSSR
    description: PWR voltage scaling status register.
    byte_offset: 20
    fieldset: VOSSR
  - name: BDCR
    description: PWR Backup domain control register.
    byte_offset: 32
    fieldset: BDCR
  - name: DBPCR
    description: PWR Backup domain control register.
    byte_offset: 36
    fieldset: DBPCR
  - name: BDSR
    description: PWR Backup domain status register.
    byte_offset: 40
    fieldset: BDSR
  - name: SCCR
    description: PWR supply configuration control register.
    byte_offset: 48
    fieldset: SCCR
  - name: VMCR
    description: PWR voltage monitor control register.
    byte_offset: 52
    fieldset: VMCR
  - name: VMSR
    description: PWR voltage monitor status register.
    byte_offset: 60
    fieldset: VMSR
  - name: WUSCR
    description: PWR wakeup status clear register.
    byte_offset: 64
    fieldset: WUSCR
  - name: WUSR
    description: PWR wakeup status register.
    byte_offset: 68
    fieldset: WUSR
  - name: WUCR
    description: PWR wakeup configuration register.
    byte_offset: 72
    fieldset: WUCR
  - name: IORETR
    description: PWR I/O retention register.
    byte_offset: 80
    fieldset: IORETR
  - name: PRIVCFGR
    description: PWR privilege configuration register.
    byte_offset: 260
    fieldset: PRIVCFGR
fieldset/BDCR:
  description: PWR Backup domain control register.
  fields:
  - name: BREN
    description: Backup RAM retention in Standby and V_BAT modes When this bit set, the backup regulator (used to maintain the backup RAM content in Standby and V_BAT modes) is enabled. If BREN is cleared, the backup regulator is switched off. The backup RAM can still be used in. Run and Stop modes. However its content is lost in Standby and V_BAT modes. If BREN is set, the application must wait till the backup regulator ready flag (BRRDY) is set to indicate that the data written into the SRAM is maintained in Standby and V_BAT modes.
    bit_offset: 0
    bit_size: 1
    enum: Retention
  - name: MONEN
    description: Backup domain voltage and temperature monitoring enable.
    bit_offset: 1
    bit_size: 1
  - name: VBE
    description: 'V_BAT charging enable Note: Reset only by POR,.'
    bit_offset: 8
    bit_size: 1
  - name: VBRS
    description: V_BAT charging resistor selection.
    bit_offset: 9
    bit_size: 1
    enum: VBRS
fieldset/BDSR:
  description: PWR Backup domain status register.
  fields:
  - name: BRRDY
    description: backup regulator ready This bit is set by hardware to indicate that the backup regulator is ready.
    bit_offset: 16
    bit_size: 1
  - name: VBATL
    description: V_BAT level monitoring versus low threshold.
    bit_offset: 20
    bit_size: 1
  - name: VBATH
    description: V_BAT level monitoring versus high threshold.
    bit_offset: 21
    bit_size: 1
  - name: TEMPL
    description: temperature level monitoring versus low threshold.
    bit_offset: 22
    bit_size: 1
  - name: TEMPH
    description: temperature level monitoring versus high threshold.
    bit_offset: 23
    bit_size: 1
fieldset/DBPCR:
  description: PWR Backup domain control register.
  fields:
  - name: DBP
    description: Disable Backup domain write protection In reset state, all registers and SRAM in Backup domain are protected against parasitic write. access. This bit must be set to enable write access to these registers.
    bit_offset: 0
    bit_size: 1
fieldset/IORETR:
  description: PWR I/O retention register.
  fields:
  - name: IORETEN
    description: 'IO retention enable: When entering into standby mode, the output is sampled, and apply to the output IO during the standby power mode. Note: the IO state is not retained if the DBG_STANDBY bit is set in DBGMCU_CR register.'
    bit_offset: 0
    bit_size: 1
  - name: JTAGIORETEN
    description: IO retention enable for JTAG IOs when entering into standby mode, the output is sampled, and apply to the output IO during the standby power mode.
    bit_offset: 16
    bit_size: 1
fieldset/PMCR:
  description: PWR power mode control register.
  fields:
  - name: LPMS
    description: low-power mode selection This bit defines the Deepsleep mode.
    bit_offset: 0
    bit_size: 1
    enum: LPMS
  - name: SVOS
    description: system Stop mode voltage scaling selection These bits control the V_CORE voltage level in system Stop mode, to obtain the best trade-off between power consumption and performance.
    bit_offset: 2
    bit_size: 2
    enum: SVOS
  - name: CSSF
    description: clear Standby and Stop flags (always read as 0) This bit is cleared to 0 by hardware.
    bit_offset: 7
    bit_size: 1
  - name: FLPS
    description: 'Flash memory low-power mode in Stop mode This bit is used to obtain the best trade-off between low-power consumption and restart time when exiting from Stop mode. When it is set, the Flash memory enters low-power mode when the CPU domain is in Stop mode. Note: When system enters stop mode with SVOS5 enabled, Flash memory is automatically forced in low-power mode.'
    bit_offset: 9
    bit_size: 1
    enum: PowerModeInStopMode
  - name: BOOSTE
    description: analog switch V_BOOST control This bit enables the booster to guarantee the analog switch AC performance when the V_DD supply voltage is below 2.7 V (reduction of the total harmonic distortion to have the same switch performance over the full supply voltage range) The V_DD supply voltage can be monitored through the PVD and the PLS bits.
    bit_offset: 12
    bit_size: 1
  - name: AVD_READY
    description: analog voltage ready This bit is only used when the analog switch boost needs to be enabled (see BOOSTE bit). It must be set by software when the expected V_DDA analog supply level is available. The correct analog supply level is indicated by the AVDO bit (PWR_VMSR register) after setting the AVDEN bit (PWR_VMCR register) and selecting the supply level to be monitored. (ALS bits).
    bit_offset: 13
    bit_size: 1
  - name: SRAM2SO
    description: AHB SRAM2 shut-off in Stop mode.
    bit_offset: 25
    bit_size: 1
    enum: ShutOff
  - name: SRAM1SO
    description: AHB SRAM1 shut-off in Stop mode.
    bit_offset: 26
    bit_size: 1
    enum: ShutOff
fieldset/PMSR:
  description: PWR status register.
  fields:
  - name: STOPF
    description: Stop flag This bit is set by hardware and cleared only by any reset or by setting the CSSF bit.
    bit_offset: 5
    bit_size: 1
  - name: SBF
    description: System standby flag This bit is set by hardware and cleared only by a POR or by setting the CSSF bit.
    bit_offset: 6
    bit_size: 1
fieldset/PRIVCFGR:
  description: PWR privilege configuration register.
  fields:
  - name: NSPRIV
    description: PWR non-secure functions privilege configuration Set and reset by software. This bit can be written only by privileged access, secure or non-secure.
    bit_offset: 1
    bit_size: 1
fieldset/SCCR:
  description: PWR supply configuration control register.
  fields:
  - name: BYPASS
    description: power management unit bypass.
    bit_offset: 0
    bit_size: 1
  - name: LDOEN
    description: LDO enable The value is set by hardware when the package uses the LDO regulator.
    bit_offset: 8
    bit_size: 1
fieldset/VMCR:
  description: PWR voltage monitor control register.
  fields:
  - name: PVDE
    description: PVD enable.
    bit_offset: 0
    bit_size: 1
  - name: PLS
    description: programmable voltage detector (PVD) level selection These bits select the voltage threshold detected by the PVD.
    bit_offset: 1
    bit_size: 3
    enum: PLS
  - name: AVDEN
    description: peripheral voltage monitor on V_DDA enable.
    bit_offset: 8
    bit_size: 1
  - name: ALS
    description: analog voltage detector (AVD) level selection These bits select the voltage threshold detected by the AVD.
    bit_offset: 9
    bit_size: 2
    enum: ALS
fieldset/VMSR:
  description: PWR voltage monitor status register.
  fields:
  - name: AVDO
    description: 'analog voltage detector output on V_DDA This bit is set and cleared by hardware. It is valid only if AVD on VDDA is enabled by the AVDEN bit. Note: Since the AVD is disabled in Standby mode, this bit is equal to 0 after standby or reset until the AVDEN bit is set.'
    bit_offset: 19
    bit_size: 1
  - name: VDDIO2RDY
    description: voltage detector output on V_DDIO2 This bit is set and cleared by hardware.
    bit_offset: 20
    bit_size: 1
  - name: PVDO
    description: 'programmable voltage detect output This bit is set and cleared by hardware. It is valid only if the PVD has been enabled by the PVDE bit. Note: Since the PVD is disabled in Standby mode, this bit is equal to 0 after Standby or reset until the PVDE bit is set.'
    bit_offset: 22
    bit_size: 1
fieldset/VOSCR:
  description: PWR voltage scaling control register.
  fields:
  - name: VOS
    description: 'voltage scaling selection according to performance These bits control the V_CORE voltage level and allow to obtain the best trade-off between power consumption and performance: - In bypass mode, these bits must also be set according to the external provided core voltage level and related performance. - When increasing the performance, the voltage scaling must be changed before increasing the system frequency. - When decreasing performance, the system frequency must first be decreased before changing the voltage scaling.'
    bit_offset: 4
    bit_size: 2
    enum: VOS
fieldset/VOSSR:
  description: PWR voltage scaling status register.
  fields:
  - name: VOSRDY
    description: Ready bit for V_CORE voltage scaling output selection.
    bit_offset: 3
    bit_size: 1
  - name: ACTVOSRDY
    description: Voltage level ready for currently used VOS.
    bit_offset: 13
    bit_size: 1
  - name: ACTVOS
    description: voltage output scaling currently applied to V_CORE This field provides the last VOS value.
    bit_offset: 14
    bit_size: 2
    enum: VOS
fieldset/WUCR:
  description: PWR wakeup configuration register.
  fields:
  - name: WUPEN
    description: 'enable wakeup pin WUPx These bits are set and cleared by software. Note: an additional wakeup event is detected if WUPx pin is enabled (by setting the WUPENx bit) when WUPx pin level is already high when WUPPx selects rising edge, or low when WUPPx selects falling edge.'
    bit_offset: 0
    bit_size: 1
    array:
      len: 5
      stride: 1
  - name: WUPP
    description: wakeup pin polarity bit for WUPx These bits define the polarity used for event detection on WUPx external wakeup pin.
    bit_offset: 8
    bit_size: 1
    array:
      len: 5
      stride: 1
    enum: WUPP
  - name: WUPPUPD
    description: wakeup pin pull configuration for WKUPx These bits define the I/O pad pull configuration used when WUPENx = 1. The associated GPIO port pull configuration must be set to the same value or to 00. The wakeup pin pull configuration is kept in Standby mode.
    bit_offset: 16
    bit_size: 2
    array:
      len: 5
      stride: 2
    enum: WUPPUPD
fieldset/WUSCR:
  description: PWR wakeup status clear register.
  fields:
  - name: CWUF
    description: clear wakeup pin flag for WUFx These bits are always read as 0.
    bit_offset: 0
    bit_size: 1
    array:
      len: 5
      stride: 1
fieldset/WUSR:
  description: PWR wakeup status register.
  fields:
  - name: WUF
    description: wakeup pin WUFx flag This bit is set by hardware and cleared only by a RESET pin or by setting the CWUFx bit in PWR_WUSCR register.
    bit_offset: 0
    bit_size: 1
    array:
      len: 5
      stride: 1
enum/ALS:
  bit_size: 2
  variants:
  - name: Level0
    description: AVD level0 (VAVD0 ~ 1.7 V)
    value: 0
  - name: Level1
    description: AVD level1 (VAVD1 ~ 2.1 V)
    value: 1
  - name: Level2
    description: AVD level2 (VAVD2 ~ 2.5 V)
    value: 2
  - name: Level3
    description: AVD level3 (VAVD3 ~ 2.8 V)
    value: 3
enum/LPMS:
  bit_size: 1
  variants:
  - name: Stop
    description: Keeps Stop mode when entering DeepSleep.
    value: 0
  - name: Standby
    description: Allows Standby mode when entering DeepSleep.
    value: 1
enum/PLS:
  bit_size: 3
  variants:
  - name: Level0
    description: PVD level0 (VPVD0 ~ 1.95 V)
    value: 0
  - name: Level1
    description: PVD level1 (VPVD1 ~ 2.10 V)
    value: 1
  - name: Level2
    description: PVD level2 (VPVD2 ~ 2.25 V)
    value: 2
  - name: Level3
    description: PVD level3 (VPVD3 ~ 2.40 V)
    value: 3
  - name: Level4
    description: PVD level4 (VPVD4 ~ 2.55 V)
    value: 4
  - name: Level5
    description: PVD level5 (VPVD5 ~ 2.70 V)
    value: 5
  - name: Level6
    description: PVD level6 (VPVD6 ~ 2.85 V)
    value: 6
  - name: PVDInPin
    description: PVD_IN pin
    value: 7
enum/PowerModeInStopMode:
  bit_size: 1
  variants:
  - name: Normal
    description: Remains in normal mode when the system enters Stop mode (quick restart time).
    value: 0
  - name: LowPower
    description: Enters low-power mode when the system enters Stop mode (low-power consumption).
    value: 1
enum/Retention:
  bit_size: 1
  variants:
  - name: Lost
    description: Content is lost.
    value: 0
  - name: Preserved
    description: Content is preserved.
    value: 1
enum/SVOS:
  bit_size: 2
  variants:
  - name: Scale5
    description: SVOS5 scale 5
    value: 1
  - name: Scale4
    description: SVOS4 scale 4
    value: 2
  - name: Scale3
    description: SVOS3 scale 3 (default)
    value: 3
enum/ShutOff:
  bit_size: 1
  variants:
  - name: Kept
    description: Content is kept.
    value: 0
  - name: Lost
    description: Content is lost.
    value: 1
enum/VBRS:
  bit_size: 1
  variants:
  - name: R5kOhm
    description: Charge VBAT through a 5 kΩ resistor.
    value: 0
  - name: R1_5kOhm
    description: Charge VBAT through a 1.5 kΩ resistor.
    value: 1
enum/VOS:
  bit_size: 2
  variants:
  - name: Scale3
    value: 0
  - name: Scale2
    value: 1
  - name: Scale1
    value: 2
  - name: Scale0
    value: 3
enum/WUPP:
  bit_size: 1
  variants:
  - name: High
    description: detection on high level (rising edge)
    value: 0
  - name: Low
    description: detection on low level (falling edge)
    value: 1
enum/WUPPUPD:
  bit_size: 2
  variants:
  - name: NoPullUp
    value: 0
  - name: PullUp
    value: 1
  - name: PullDown
    value: 2