Patent ID: 6678185
Filing Date: 2004-01-13
Classification: G11C

Abstract:
A programmable non-volatile data storage circuit comprising:a plurality of selectively addressable first bi-state bi-stable circuit elements, the first circuit elements being electrically switchable from a first state to a second state for programming the storage circuit, a first terminal for receiving a power supply modulated with one of a serial data input signal with address data of selected ones of the first circuit elements to be switched from the first state to the second state, and a dock signal for clocking the data input signal, a selectively configurable second terminal for receiving the other of the serial data input signal and the dock signal, and an interpreter circuit responsive to the data input signal and the clock signal for selecting and addressing each first circuit element to be switched in response to the data input signal, and for enabling switching of each of the selected first circuit elements, and for selectively configuring the second terminal as an input and/or output terminal to operate under the control of a primary circuit with which the data storage circuit is associated, in response to the data input signal.