Dense Nor Read-Only Storage Cell
Original Publication Date: 1986-Jan-01
Included in the Prior Art Database: 2005-Mar-08
This read-only storage cell circuit includes six closely packed field- effect transistors, five of which are addressable as read-only storage devices. The use of a hexagonal diffusion/contact pattern allows maximum density to be achieved in arrays of the basic five-device memory cell. Fig. 1 shows the circuit for the basic repeating unit of the read- only storage cell. The circuit includes five addressable devices T1T5 and one depletion device TD, which is used to enable accessing of device T5.