An internal potential generating circuit capable of outputting a plurality of potentials while suppressing an increase in circuit area

摘要

The internal potential generating circuit 200 of the present invention is configured such that the high voltage switch circuit 218 is turned on in the initial stage of its operation so that the output node N_H1) Of the second boosting circuit 204 and the potential level of the output node N_H2) Are held in common to operate. After the output potential level from the second booster circuit 204 reaches a predetermined potential level, the high-voltage switch circuit 218 enters the cutoff state, and the first booster circuit 202 and the second booster circuit 204 are turned off, Each independently drive the potential level of the corresponding output node.