Photorepeated integrated circuit with compensation of the propagation delays of signals, notably of clock signals

Abstract

Integrated circuits of large size produced by photorepetition of several mutually identical partial patterns are provided, more precisely to the compensation of propagation delays of signals (notably of clock signals) from one partial circuit to the following whereas the signals concerned must reach the various partial circuits simultaneously for proper operation of the whole. The compensation circuit provided in each partial circuit comprises a main transmission line for a master clock signal and a compensation line with multiple outputs, as well as a multiplexer for selecting one of the outputs, the output selected being different in the various partial circuits. The multiplexer provides a local clock signal in each partial circuit and these clock signals are synchronous despite the propagation delays.