Circuitry for controlling a threshold voltage in a flash memory cell

摘要

The circuit for controlling the threshold voltage in the flash memory cell according to the present invention comprises a circuit for generating a first voltage depending on the amount of a drain current in the memory cell; a first element for comparing the first voltage with a reference voltage and for generating a second voltage; and a second element for supplying a control gate voltage for the control gate of the memory cell depending on the second voltage.