RegViz: Visualize GPIOA

stm32 /stm32h5 /STM32H562 /GPIOA /GPIOA_LCKR

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Interpret as GPIOA_LCKR

LCK2=B_0x0, LCK4=B_0x0, LCK5=B_0x0, LCK3=B_0x0, LCK14=B_0x0, LCK11=B_0x0, LCK7=B_0x0, LCK1=B_0x0, LCK9=B_0x0, LCK13=B_0x0, LCKK=B_0x0, LCK12=B_0x0, LCK10=B_0x0, LCK0=B_0x0, LCK8=B_0x0, LCK15=B_0x0, LCK6=B_0x0

Description

GPIO port configuration lock register

Fields

LCK0	Port x lock I/O pin y (y = 15 to 0) These bits are read/write but can only be written when the LCKK bit is 0 Note: The bit is reserved and must be kept to reset value when the corresponding I/O is not available on the selected package. 0 (B_0x0): Port configuration not locked 1 (B_0x1): Port configuration locked
LCK1	Port x lock I/O pin y (y = 15 to 0) These bits are read/write but can only be written when the LCKK bit is 0 Note: The bit is reserved and must be kept to reset value when the corresponding I/O is not available on the selected package. 0 (B_0x0): Port configuration not locked 1 (B_0x1): Port configuration locked
LCK2	Port x lock I/O pin y (y = 15 to 0) These bits are read/write but can only be written when the LCKK bit is 0 Note: The bit is reserved and must be kept to reset value when the corresponding I/O is not available on the selected package. 0 (B_0x0): Port configuration not locked 1 (B_0x1): Port configuration locked
LCK3	Port x lock I/O pin y (y = 15 to 0) These bits are read/write but can only be written when the LCKK bit is 0 Note: The bit is reserved and must be kept to reset value when the corresponding I/O is not available on the selected package. 0 (B_0x0): Port configuration not locked 1 (B_0x1): Port configuration locked
LCK4	Port x lock I/O pin y (y = 15 to 0) These bits are read/write but can only be written when the LCKK bit is 0 Note: The bit is reserved and must be kept to reset value when the corresponding I/O is not available on the selected package. 0 (B_0x0): Port configuration not locked 1 (B_0x1): Port configuration locked
LCK5	Port x lock I/O pin y (y = 15 to 0) These bits are read/write but can only be written when the LCKK bit is 0 Note: The bit is reserved and must be kept to reset value when the corresponding I/O is not available on the selected package. 0 (B_0x0): Port configuration not locked 1 (B_0x1): Port configuration locked
LCK6	Port x lock I/O pin y (y = 15 to 0) These bits are read/write but can only be written when the LCKK bit is 0 Note: The bit is reserved and must be kept to reset value when the corresponding I/O is not available on the selected package. 0 (B_0x0): Port configuration not locked 1 (B_0x1): Port configuration locked
LCK7	Port x lock I/O pin y (y = 15 to 0) These bits are read/write but can only be written when the LCKK bit is 0 Note: The bit is reserved and must be kept to reset value when the corresponding I/O is not available on the selected package. 0 (B_0x0): Port configuration not locked 1 (B_0x1): Port configuration locked
LCK8	Port x lock I/O pin y (y = 15 to 0) These bits are read/write but can only be written when the LCKK bit is 0 Note: The bit is reserved and must be kept to reset value when the corresponding I/O is not available on the selected package. 0 (B_0x0): Port configuration not locked 1 (B_0x1): Port configuration locked
LCK9	Port x lock I/O pin y (y = 15 to 0) These bits are read/write but can only be written when the LCKK bit is 0 Note: The bit is reserved and must be kept to reset value when the corresponding I/O is not available on the selected package. 0 (B_0x0): Port configuration not locked 1 (B_0x1): Port configuration locked
LCK10	Port x lock I/O pin y (y = 15 to 0) These bits are read/write but can only be written when the LCKK bit is 0 Note: The bit is reserved and must be kept to reset value when the corresponding I/O is not available on the selected package. 0 (B_0x0): Port configuration not locked 1 (B_0x1): Port configuration locked
LCK11	Port x lock I/O pin y (y = 15 to 0) These bits are read/write but can only be written when the LCKK bit is 0 Note: The bit is reserved and must be kept to reset value when the corresponding I/O is not available on the selected package. 0 (B_0x0): Port configuration not locked 1 (B_0x1): Port configuration locked
LCK12	Port x lock I/O pin y (y = 15 to 0) These bits are read/write but can only be written when the LCKK bit is 0 Note: The bit is reserved and must be kept to reset value when the corresponding I/O is not available on the selected package. 0 (B_0x0): Port configuration not locked 1 (B_0x1): Port configuration locked
LCK13	Port x lock I/O pin y (y = 15 to 0) These bits are read/write but can only be written when the LCKK bit is 0 Note: The bit is reserved and must be kept to reset value when the corresponding I/O is not available on the selected package. 0 (B_0x0): Port configuration not locked 1 (B_0x1): Port configuration locked
LCK14	Port x lock I/O pin y (y = 15 to 0) These bits are read/write but can only be written when the LCKK bit is 0 Note: The bit is reserved and must be kept to reset value when the corresponding I/O is not available on the selected package. 0 (B_0x0): Port configuration not locked 1 (B_0x1): Port configuration locked
LCK15	Port x lock I/O pin y (y = 15 to 0) These bits are read/write but can only be written when the LCKK bit is 0 Note: The bit is reserved and must be kept to reset value when the corresponding I/O is not available on the selected package. 0 (B_0x0): Port configuration not locked 1 (B_0x1): Port configuration locked
LCKK	Lock key This bit can be read any time. It can only be modified using the lock key write sequence. LOCK key write sequence: WR LCKR[16] = 1 + LCKR[15:0] WR LCKR[16] = 0 + LCKR[15:0] WR LCKR[16] = 1 + LCKR[15:0] LOCK key read RD LCKR[16] = 1 (this read operation is optional but it confirms that the lock is active) Note: During the LOCK key write sequence, the value of LCK[15:0] must not change. Any error in the lock sequence aborts the LOCK. After the first LOCK sequence on any bit of the port, any read access on the LCKK bit returns 1 until the next MCU reset or peripheral reset. 0 (B_0x0): Port configuration lock key not active 1 (B_0x1): Port configuration lock key active. The GPIOx_LCKR register is locked until the next MCU reset or peripheral reset.

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