A control circuit used to transfer data to a programmable memory in an electronic device can be separate from a general operation processor circuit that controls general operations of the electronic device. The controller circuit may allow a transfer of data to the programmable memory without the use of Random Access Memory (RAM) or a Read Only Memory (ROM) that is under the control of the general operation processor circuit. The general operation processor circuit can be disabled by the controller circuit while data is transferred (i.e. programmed to) programmable memory.