Integrated circuit with test facility has test switch closed by applied test signal to allow test voltage to be applied to irreversible programmable switches

摘要

The integrated circuit (2) is coupled to a testing device (1) for function testing, with contact pads (31,32) for connection to the supply voltage (VDD,VSS) and a test contact pad (36) coupled to a switch (38), which is closed in response to an applied test signal (TEST), for coupling the test voltage to irreversible programmable switches (42,43), e.g. fuses. An Independent claim for a test device for an integrated circuit is also included.