PROCEDURE FOR THE PROTECTION OF CIRCUIT PROVISIONS WITH NON-VOLATILE MEMORY, ELECTRICALLY PROGRAMMABLE, USED AS AN ACCOUNTANT, AGAINST NON-UNOQUE PROGRAMMING, OF LIMIT VALUE OF THIS MEMORY AND CIRCUIT PROVISION FOR THE PERFORMANCE OF THE PROCEDURE.

摘要

PROCEDURE TO AVOID A PROGRAMMING OF LIMIT VALUES IN MEMORY CELLS IN AN ELECTRICAL PROGRAMMING MEMORY. AFTER THE PROGRAMMING, EACH MEMORY CELL IS READ ABOUT THE CONTENT OF THE SAME AND ONLY IN THE CASE THAT DURING THE READING PROCESS, IT IS RECOGNIZED THAT THE CELL IS PROGRAMMED, A PERMIT SIGNAL POSSIBLE ACCESS TO THE PROTECTED FUNCTIONS. ACCORDING TO THE INVENTION IN THIS READING PROCESS, JUST AFTER THE PROGRAMMING, THE ASSESSMENT PENDULUM IS ADJUSTED IN A MORE CRITICAL WAY, THAN IN OTHER READING PROCESSES.