Patents
Patents for G11C 17 - Read-only memories programmable only once; Semi-permanent stores, e.g. manually-replaceable information cards (10,133)
05/1993
05/25/1993US5214605 Automatic erasing optimization circuit for an electrically erasable and programmable semiconductor memory and method thereof
05/25/1993US5214604 Electrically programmable read only memory device with dummy memory cells used in diagnostic operation on decoder units
05/25/1993US5214303 Semiconductor device ROM having an offset region
05/25/1993CA1318367C High speed ecl input buffer for vertical fuse arrays
05/19/1993EP0542311A2 Memory designation control device
05/13/1993DE4233248A1 Flash-EEPROM with blockwise erase capability - controls Y-decoder and transfer circuit so that source-line latch circuit potential is applied via bit line to memory block field
05/12/1993EP0541222A2 Method and apparatus for erasing an array of electrically erasable EPROM cells
05/12/1993EP0541221A2 Method and apparatus for preventing overerasure in a flash cell
05/12/1993CN1072040A Nand type mask readonly memory
05/11/1993US5210854 System for updating program stored in eeprom by storing new version into new location and updating second transfer vector to contain starting address of new version
05/11/1993US5210716 Semiconductor nonvolatile memory
05/04/1993US5208780 Structure of electrically programmable read-only memory cells and redundancy signature therefor
05/04/1993US5208772 Gate EEPROM cell
04/1993
04/27/1993US5206552 Sense amplifier for non-volatile semiconductor storage device
04/21/1993EP0537973A2 Nand-cell type electrically erasable and programmable read- only memory with redundancy circuit
04/21/1993EP0537914A1 Method and apparatus for phantom serial memory access
04/20/1993US5204842 Semiconductor memory with memory unit comprising a plurality of memory blocks
04/20/1993US5204839 Program optimizing circuit and method for an electrically erasable and programmable semiconductor memory device
04/20/1993US5204835 Eprom virtual ground array
04/20/1993US5204560 Combined sense amplifier and latching circuit for high speed roms
04/14/1993EP0536696A2 Semiconductor memory device
04/13/1993US5202852 Programmable read only memory card with improved buffer circuit
04/13/1993US5202848 Read only memory device
04/08/1993DE4227462A1 Microcomputer with at least one voltage changover circuit for two switching elements - prevents leakage current caused by deviations in transistor parameters arising during manufacture.
04/07/1993EP0536094A2 Null consumption, nonvolatile programmable switch
04/07/1993CN1070759A Anti-copy read-only memory
04/06/1993US5200959 Device and method for defect handling in semi-conductor memory
04/06/1993US5200923 Non-volatile memory device
04/06/1993US5200652 Programmable/reprogrammable structure combining both antifuse and fuse elements
03/1993
03/31/1993EP0534910A2 Row-decoder for nand-type rom
03/31/1993EP0534676A2 EEPROM with improved endurance properties
03/30/1993US5198998 Erasable programmable read only memory
03/30/1993US5198996 Semiconductor non-volatile memory device
03/24/1993CN1070279A Mask read only memory device
03/23/1993US5197029 Common-line connection for integrated memory array
03/23/1993US5197028 Semiconductor memory device with dual reference elements
03/23/1993US5196739 High voltage charge pump
03/18/1993WO1993005513A1 Circuit for controlling the programming voltage of programmable memories
03/17/1993EP0531707A2 Semiconductor memory cell and memory array with inversion layer
03/16/1993US5195054 Semiconductor memory
03/16/1993US5194759 Methods for preventing disturbance of antifuses during programming
03/12/1993CA2077929A1 Semiconductor integrated circuit
03/10/1993EP0530713A2 Nonvolatile memory circuit
03/10/1993EP0530376A1 Semiconductor memory having nonvolatile semiconductor memory cell
03/09/1993US5193073 On chip voltage regulator for common collection matrix programmable memory array
03/04/1993WO1993004506A1 Electrically erasable, directly overwritable, multibit single cell memory elements and arrays fabricated therefrom
03/03/1993EP0529862A2 Non-volatile memories
03/03/1993EP0529234A2 Semiconductor memory device
03/02/1993US5191556 Method of page-mode programming flash eeprom cell arrays
03/02/1993US5191550 Dual antifuse memory device
03/02/1993US5191402 Semiconductor device having an inter-layer insulating film disposed between two wiring layers
02/1993
02/24/1993EP0528690A1 Contact alignment for read only memory devices
02/24/1993EP0528490A2 Electronic matrix array devices and systems incorporating such devices
02/24/1993EP0528417A2 One-time, voltage-programmable, read-only memory array having memory cell igfets, each of which is coupled to a reference voltage line via an anti-fuse element
02/18/1993WO1993003497A1 Programming of antifuses
02/16/1993US5187683 Method for programming EEPROM memory arrays
02/03/1993EP0526427A2 Sense amplifier for programmable memories with a virtually enhanced source of signal
02/03/1993EP0526221A1 Data processing system with progressively programmable nonvolatile memory and method therefor
02/03/1993EP0525941A2 Method of self-diagnosing a mobile telephone set for use in a mobile telephone switching system and mobile telephone set being applied to the method
02/03/1993EP0525939A2 Methods for protecting outputs of low-voltage circuits from high programming voltages
02/03/1993EP0525840A2 Programmable cell with a programmable component outside the signal path
02/03/1993EP0525680A2 Data latch circuit having non-volatile memory cell
02/03/1993EP0525679A2 Writing control circuit employed in non-volatile semiconductor memory device
02/03/1993EP0525678A2 Nonvolatile semiconductor memory device having row decoder
01/1993
01/20/1993EP0523817A2 Improved programmable logic device
01/19/1993US5181206 Prom writer having check sum function
01/13/1993EP0522780A2 Control method for a computer memory device
01/13/1993EP0522579A2 Level-shifter circuit for integrated circuits
01/13/1993EP0522539A2 Mask programmable read only memory device with multi-level memory cell array and process of fabrication thereof
01/13/1993EP0305987B1 Self-correcting semiconductor memory device and microcomputer incorporating the same
01/12/1993US5179540 Programmable chip enable logic function
01/12/1993US5179537 Semiconductor memory device having monitoring function
01/12/1993US5179536 Semiconductor memory device having means for replacing defective memory cells
01/07/1993EP0521594A2 Semiconductor memory device
01/06/1993CN1067614A Conmemorative information storage card and its processing method and device
01/05/1993US5177743 Semiconductor memory
12/1992
12/30/1992EP0520357A2 Read only memory device with recharging transistor automatically supplementing current to an input node of output inverter
12/29/1992US5175706 Programming voltage generator circuit for programmable memory
12/29/1992US5175705 Semiconductor memory device having circuit for prevention of overcharge of column line
12/23/1992EP0519847A1 Data count memory card and reading apparatus
12/22/1992US5173876 Electrically erasable and programmable non-volatile semiconductor memory device
12/22/1992US5173874 Semiconductor storage device
12/22/1992US5173616 Code setting circuit
12/16/1992CN1019531B Firmware for data compression of code set of input system for diphthong coding of chinese charaeter computer
12/15/1992US5172342 Portable semiconductor memory unit
12/15/1992US5172337 Semiconductor memory device
12/09/1992EP0517354A2 Semiconductor memory circuit having a test logic circuit structure
12/08/1992US5170373 Three transistor eeprom cell
12/02/1992EP0516516A1 Memory with capacitive EEPROM cell and process for reading such a memory cell
12/02/1992EP0516296A2 Method of programming floating gate memory devices
12/02/1992EP0516225A2 Precharging circuit of bit line for reading an EPROM memory cell
12/01/1992CA1311053C Nonvolatile memory element
11/1992
11/25/1992EP0515039A2 A complementary low power non-volatile reconfigurable eecell
11/24/1992US5166901 Programmable memory cell structure including a refractory metal barrier layer
11/19/1992EP0514350A2 Current offset sense amplifier of a modulated current or current unbalance type for programmable memories
11/12/1992WO1992020067A1 Non-volatile erasable and programmable interconnect cell
11/12/1992DE4214184A1 Dynamic non-volatile memory and update in a computer system
11/05/1992DE4213574A1 ROM with optional predetermined outputs - has address recognition circuits enabling predetermined logic levels to be applied to output lines
11/04/1992EP0511675A2 Semiconductor device for generating constant potential
11/04/1992EP0511560A2 Low voltage programmable storage element
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