LCKR register
| LCK0 | LCK0: Port B lock bit 0 These bits are read/write but can only be written when the LCKK bit is 0, using the specific sequence described in LCKK bit description. -0: Port configuration not locked -1: Port configuration locked |
| LCK1 | LCK1: Port B lock bit 1 These bits are read/write but can only be written when the LCKK bit is 0, using the specific sequence described in LCKK bit description. -0: Port configuration not locked -1: Port configuration locked |
| LCK2 | LCK2: Port B lock bit 2 These bits are read/write but can only be written when the LCKK bit is 0, using the specific sequence described in LCKK bit description. -0: Port configuration not locked -1: Port configuration locked |
| LCK3 | LCK3: Port B lock bit 3 These bits are read/write but can only be written when the LCKK bit is 0, using the specific sequence described in LCKK bit description. -0: Port configuration not locked -1: Port configuration locked |
| LCK4 | LCK4: Port B lock bit 4 These bits are read/write but can only be written when the LCKK bit is 0, using the specific sequence described in LCKK bit description. -0: Port configuration not locked -1: Port configuration locked |
| LCK5 | LCK5: Port B lock bit 5 These bits are read/write but can only be written when the LCKK bit is 0, using the specific sequence described in LCKK bit description. -0: Port configuration not locked -1: Port configuration locked |
| LCK6 | LCK6: Port B lock bit 6 These bits are read/write but can only be written when the LCKK bit is 0, using the specific sequence described in LCKK bit description. -0: Port configuration not locked -1: Port configuration locked |
| LCK7 | LCK7: Port B lock bit 7 These bits are read/write but can only be written when the LCKK bit is 0, using the specific sequence described in LCKK bit description. -0: Port configuration not locked -1: Port configuration locked |
| LCK12 | LCK12: Port B lock bit 12 These bits are read/write but can only be written when the LCKK bit is 0, using the specific sequence described in LCKK bit description. -0: Port configuration not locked -1: Port configuration locked |
| LCK13 | LCK13: Port B lock bit 13 These bits are read/write but can only be written when the LCKK bit is 0, using the specific sequence described in LCKK bit description. -0: Port configuration not locked -1: Port configuration locked |
| LCK14 | LCK14: Port B lock bit 14 These bits are read/write but can only be written when the LCKK bit is 0, using the specific sequence described in LCKK bit description. -0: Port configuration not locked -1: Port configuration locked |
| LCK15 | LCK15: Port B lock bit 15 These bits are read/write but can only be written when the LCKK bit is 0, using the specific sequence described in LCKK bit description. -0: Port configuration not locked -1: Port configuration locked |
| LCKK | LCKK: Lock key This bit can be read any time. It can only be modified using the lock key write sequence. -0: Port configuration lock key not active -1: Port configuration lock key active. The GPIOx_LCKR register is locked until the next MCU reset or peripheral reset. 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] RD LCKR 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 will return 1 until the next MCU reset or peripheral reset. |