Pin Control Register Unlocked State.

Pin Control Register Unlocked StatePin Control Register fields [15:0] are not write-protected and can be modified. All pin configuration parameters can be changed dynamically during runtime. This is the default state allowing normal pin configuration operations.

引腳控制暫存器未鎖定狀態，允許正常的引腳配置操作

All PCR configuration bits [14:0] are writable
Pin multiplexer, drive strength, pull resistors, etc. can be modified
Lock bit [15] can be set to transition to locked state
Normal operational mode for dynamic pin reconfiguration
Allows runtime adaptation of pin functions

註: Default state after system reset; Enables flexible pin function switching during operation; Required for applications needing dynamic pin reconfiguration

Cases:

Dynamic peripheral switching (GPIO ↔ UART ↔ SPI)
Power mode dependent pin configurations
Runtime optimization of electrical characteristics
Debugging and development flexibility

警告: Vulnerable to accidental configuration changes; Software errors could modify critical pin settings