An optic module is disclosed having a memory configured to store data. To selectively control access to the memory and data stored in memory, a method and apparatus for memory access control is provided which creates access levels. The access levels include associated passwords, and read/write capability control, and address access range. During use a technician or other party would enter a password via an interface and the entered password is compared to the password associated with each access level. If a match is not found, then access to the memory, a hence data within the memory is denied. If a match is found the technician gains access to the data stored in the memory address range associated with the access level. Read and write access may also be granted or denied.