公开(公告)号：JPH05210577A

公开(公告)日：1993-08-20

申请号：JP23865192

申请日：1992-09-07

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： KIN KIOU ,  RI MASASUZU ,  BOKU KIYOUMO ,  IN KIYOUCHIN ,  BOKU SHINSHIYU

IPC: G06F12/06 ,  G11C8/12

Abstract: PURPOSE: To provide a semiconductor device in which AN additional outside chip selection controlling circuit is not necessary in order to improve a chip selection terminal and to constitute a simple decoding circuit inside the semiconductor device. CONSTITUTION: A decoding logic circuit 40 equipped with plural chip selection terminal pairs or the like for selecting a single semiconductor element chip corresponding to the logical combination of an extended address is constituted inside the semiconductor element chip or the like. The decoding logic circuit 40 includes inside logic circuits 30 or the like in the same number as that of the selected semiconductor element chips or the like. Also, the decoding logic circuit 40 includes a module selection terminal (cs) for selecting the overall modules. The inside logic circuit 30 includes a first logic designating circuit 10a which maintains a prescribed logical state and a second logical state circuit 10b which maintains the logical state opposite to that of the first logic designating circuit 10a.