An Efficient Low-Power Programmable PRPG with Test Compression Capabilities

K. Satya Manuja


This paper describes a low-power (LP) program-mable generator capable of producing pseudorandom test p at -terns with desired toggling levels and enhanced fault coverage gradient compared with the best-to-date built-in self-test (BIST)-based pseudorandom test p attern generators. It is comprised of a linear finite state machine (a linear feedback shift register or a ring generator) driving an app rop riate p hase shifter, and it comes with a number of features allowing this device to produce binary sequences with preselected toggling (PRESTO) activity. We introduce a method to automatically select several controls of the generator offering easy and precise tuning. The

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