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专利名称：Integrated programming circuitry for an
electrically programmable semiconductormemory device with redundancy
发明人：Pascucci, Luigi,Padoan, Silvia,Maccarrone,
Marco
申请号：EP93830528.1申请日：19931229公开号：EP0661636A1公开日：19950705
专利附图：
摘要：An integrated programming circuitry for an electrically programmablesemiconductor memory device comprises a plurality of programming load circuits(PLOAD0-PLOAD15), each one associated to a respective memory matrix portion (OD0-OD15) or group of columns (BL), and a plurality of programming load control circuits(CNT0-CNT15), each one controlling the activation of one respective programming load
circuit (PLOAD0-PLOAD15) according to the logic state of a respective data line (D0-D15)carrying a datum to be programmed; the memory device comprises a group (RB) ofredundancy bit lines (RBL) and an associated redundancy programming load circuit(PLOADR); each programming load control circuit (CNT0-CNT15) comprises decodingmeans (7) supplied with signals (OC0-OC3,OC0N-OC3N) which, when a defective columnaddress (COLADD) is supplied to the memory device during programming, are generatedfrom a matrix portion identifying code (OC0'-OC3') stored in a non-volatile register (RR)wherein the defective column address (COLADD) is stored, and switch means (SW,6)responsive to a decoded signal (ROUT) at the output of said decoding means (7) toenable the activation of the redundancy programming load circuit (PLOADR) according tothe logic state of the data signal line (D0-D15) and to cause the inhibition of the activationof the respective programming load circuit (PLOAD0-PLOAD15).
申请人：SGS-THOMSON MICROELECTRONICS S.r.l.
地址：Via C. Olivetti, 2 I-20041 Agrate Brianza (Milano) IT
国籍：IT
代理机构：Mittler, Enrico
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