10.3.3 Security Bit

The User Row in the Auxiliary Space cannot be read or written when the Security Bit is set. The Security Bit can be set by using passing NVM_COMMAND_SET_SECURITY_BIT to the nvm_execute_command() function, or it will be set if one tries to access a locked region. See Region Lock Bits.

The Security Bit can only be cleared by performing a chip erase.