公开(公告)号：JPH05101687A

公开(公告)日：1993-04-23

申请号：JP6564092

申请日：1992-03-24

Applicant: IBM

Inventor： WAGUDEI UIRIAMU ABADEIIA ,  BADEII ERUUKAA ,  UEIN FUREDERITSUKU ERISU ,  DEYUEIN ERUMAA GARUBI ,  NEEZAN RAFUAERU HIRUTEBEITERU ,  UIRIAMU ROBAATO TONTEI ,  JIYOSEFU SAMIYUERU WATSUTSU

IPC: G11C11/413 ,  G11C11/401 ,  G11C17/00 ,  G11C17/06 ,  G11C17/14 ,  G11C17/16 ,  G11C29/00 ,  G11C29/04 ,  H01L27/10

Abstract: PURPOSE: To program programmable anti and use by a low current value in a short time by providing plural resistors, a connection switching circuit and a program detection circuit. CONSTITUTION: This programmable memory cell 1 for redundant programming is provided with anti and use element resistors F1 and F2 connected through transistors QL1 -QL4 , QP1 and QP2 to nodes N1 and N2. A detection latch circuit 2 serially connects the resistor F1 in response to plural first control signals and parallelly connects the F1 in response to plural second control signals through the transistors QL1 -QL4 . The detection latch 2 compares a first voltage drop over the resistor F1 and a second voltage drop over the F2 and decides the final states of the F1 and F2. One of the nodes N1 is outputted through an inverter composed of Qb1 and Qb2 . An FOUT becomes Vdd at the time of F1>F2 and becomes GND at the time of F1>F2. By the constitution, the memory cell programmable by the low current value in a short time is obtained.