An embedded read only memory architecture with a complementary and two interchangeable power/performance design points

Abstract

This paper focuses on the features of a 0.13 /spl mu/m embedded, compilable read only memory (ROM). A complementary array cell is described which increases and maintains signal margins across array sizes despite the ever-increasing capacitive coupling effects and lower voltages of each succeeding technology generation. A new architecture is described which allows a customer to switch between two different power/performance design points while only changing the metal wiring in the ROM via a compiler. Hardware data is presented which illustrates the success of the array design and difference between the two power/performance design points.