Input of test conditions and output generation for built-in self test

A system and method is discussed for providing programmable test conditions for a built-in self test circuit of a flash memory device. The present invention employs a flash memory having BIST circuit for testing the memory and a BIST interface circuit adapted to adjust the test conditions of the memory tests. The BIST interface circuit is operable to receive one or more global variables associated with the test conditions of a plurality of tests used on the flash memory and to output results of the memory tests based on the value of the variables. The global variables are used to adjust the test conditions and to trim one or more references used in various flash memory tests and operations. The system may further include a serial communications medium for communicating the global variables to the BIST interface and test results from the interface.