block/FLASH:
  description: FLASH
  items:
  - name: ACR
    description: Flash access control register
    byte_offset: 0
    fieldset: ACR
  - name: KEYR
    description: Flash key register
    byte_offset: 4
    access: Write
    fieldset: KEYR
  - name: OPTKEYR
    description: Flash option key register
    byte_offset: 8
    access: Write
    fieldset: OPTKEYR
  - name: SR
    description: Status register
    byte_offset: 12
    fieldset: SR
  - name: CR
    description: Control register
    byte_offset: 16
    fieldset: CR
  - name: OPTCR
    description: Flash option control register
    byte_offset: 20
    fieldset: OPTCR
fieldset/ACR:
  description: Flash access control register
  fields:
  - name: LATENCY
    description: Latency
    bit_offset: 0
    bit_size: 3
    enum: LATENCY
  - name: PRFTEN
    description: Prefetch enable
    bit_offset: 8
    bit_size: 1
  - name: ICEN
    description: Instruction cache enable
    bit_offset: 9
    bit_size: 1
  - name: DCEN
    description: Data cache enable
    bit_offset: 10
    bit_size: 1
  - name: ICRST
    description: Instruction cache reset
    bit_offset: 11
    bit_size: 1
  - name: DCRST
    description: Data cache reset
    bit_offset: 12
    bit_size: 1
fieldset/CR:
  description: Control register
  fields:
  - name: PG
    description: Programming
    bit_offset: 0
    bit_size: 1
  - name: SER
    description: Sector Erase
    bit_offset: 1
    bit_size: 1
  - name: MER
    description: Mass Erase
    bit_offset: 2
    bit_size: 1
  - name: SNB
    description: Sector number
    bit_offset: 3
    bit_size: 5
  - name: PSIZE
    description: Program size
    bit_offset: 8
    bit_size: 2
    enum: PSIZE
  - name: STRT
    description: Start
    bit_offset: 16
    bit_size: 1
  - name: EOPIE
    description: End of operation interrupt enable
    bit_offset: 24
    bit_size: 1
  - name: ERRIE
    description: Error interrupt enable
    bit_offset: 25
    bit_size: 1
  - name: LOCK
    description: Lock
    bit_offset: 31
    bit_size: 1
fieldset/KEYR:
  description: Flash key register
  fields:
  - name: KEY
    description: FPEC key
    bit_offset: 0
    bit_size: 32
fieldset/OPTCR:
  description: Flash option control register
  fields:
  - name: OPTLOCK
    description: Option lock
    bit_offset: 0
    bit_size: 1
  - name: OPTSTRT
    description: Option start
    bit_offset: 1
    bit_size: 1
  - name: BOR_LEV
    description: BOR reset Level
    bit_offset: 2
    bit_size: 2
  - name: WDG_SW
    description: WDG_SW User option bytes
    bit_offset: 5
    bit_size: 1
  - name: nRST_STOP
    description: nRST_STOP User option bytes
    bit_offset: 6
    bit_size: 1
  - name: nRST_STDBY
    description: nRST_STDBY User option bytes
    bit_offset: 7
    bit_size: 1
  - name: RDP
    description: Read protect
    bit_offset: 8
    bit_size: 8
  - name: nWRP
    description: Not write protect
    bit_offset: 16
    bit_size: 12
  - name: DB1M
    description: Dual-bank enable on 1 Mbyte Flash memory devices
    bit_offset: 30
    bit_size: 1
  - name: SPRMOD
    description: Selection of protection mode for nWPRi bits
    bit_offset: 31
    bit_size: 1
fieldset/OPTKEYR:
  description: Flash option key register
  fields:
  - name: OPTKEY
    description: Option byte key
    bit_offset: 0
    bit_size: 32
fieldset/SR:
  description: Status register
  fields:
  - name: EOP
    description: End of operation
    bit_offset: 0
    bit_size: 1
  - name: OPERR
    description: Operation error
    bit_offset: 1
    bit_size: 1
  - name: WRPERR
    description: Write protection error
    bit_offset: 4
    bit_size: 1
  - name: PGAERR
    description: Programming alignment error
    bit_offset: 5
    bit_size: 1
  - name: PGPERR
    description: Programming parallelism error
    bit_offset: 6
    bit_size: 1
  - name: PGSERR
    description: Programming sequence error
    bit_offset: 7
    bit_size: 1
  - name: BSY
    description: Busy
    bit_offset: 16
    bit_size: 1
enum/LATENCY:
  bit_size: 3
  variants:
  - name: WS0
    description: 0 wait states
    value: 0
  - name: WS1
    description: 1 wait states
    value: 1
  - name: WS2
    description: 2 wait states
    value: 2
  - name: WS3
    description: 3 wait states
    value: 3
  - name: WS4
    description: 4 wait states
    value: 4
  - name: WS5
    description: 5 wait states
    value: 5
  - name: WS6
    description: 6 wait states
    value: 6
  - name: WS7
    description: 7 wait states
    value: 7
  - name: WS8
    description: 8 wait states
    value: 8
  - name: WS9
    description: 9 wait states
    value: 9
  - name: WS10
    description: 10 wait states
    value: 10
  - name: WS11
    description: 11 wait states
    value: 11
  - name: WS12
    description: 12 wait states
    value: 12
  - name: WS13
    description: 13 wait states
    value: 13
  - name: WS14
    description: 14 wait states
    value: 14
  - name: WS15
    description: 15 wait states
    value: 15
enum/PSIZE:
  bit_size: 2
  variants:
  - name: PSIZE8
    description: Program x8
    value: 0
  - name: PSIZE16
    description: Program x16
    value: 1
  - name: PSIZE32
    description: Program x32
    value: 2
  - name: PSIZE64
    description: Program x64
    value: 3