Patents
Sitemap › G11 - Information storage › G11C - Static stores › G11C 17 - Read-only memories programmable only once; Semi-permanent stores, e.g. manually-replaceable information cards
Patents for G11C 17 - Read-only memories programmable only once; Semi-permanent stores, e.g. manually-replaceable information cards (10,133)
12/1989
12/19/1989US4888738 Current-regulated, voltage-regulated erase circuit for EEPROM memory
12/19/1989US4888735 ROM cell and array configuration
12/19/1989US4888734 EPROM/flash EEPROM cell and array configuration
12/19/1989US4888733 Non-volatile memory cell and sensing method
12/19/1989US4888686 System for storing information with comparison of stored data values
12/13/1989EP0345791A2 Nonvolatile semiconductor memory
12/12/1989US4887242 Non-volatile semiconductor memory device having means to latch the input data bits for controlling the drain and gate voltages of memory cell transistors
12/12/1989US4887241 ECL PROM programming method and apparatus using ECL addressing means
12/12/1989US4887239 One-time programmable data security system for programmable logic device
12/12/1989US4887238 Non-volatile memory with floating grid and without thick oxide
12/12/1989US4887236 Non-volatile, radiation-hard, random-access memory
11/1989
11/28/1989US4884241 Nonvolatile semiconductor memory device
11/28/1989US4884239 Method for erasing data in a semiconductor memory device
11/28/1989US4884238 Read-only memory
11/28/1989US4883976 Low power dual-mode CMOS bias voltage generator
11/23/1989EP0342880A2 Semiconductor non-volatile memory device
11/21/1989US4882507 Output circuit of semiconductor integrated circuit device
11/16/1989WO1989011127A1 Rom writing apparatus
11/15/1989EP0341768A2 EPROM memory using programming voltages taken from a single low voltage power supply
11/14/1989US4881201 Semiconductor integrated circuit device
11/14/1989US4881200 Erasable programmable read only memory device
11/14/1989US4881199 Read circuit for reading the state of memory cells
11/07/1989US4879689 Nonvolatile semiconductor memory device
11/07/1989US4879688 In-system programmable logic device
11/07/1989US4879682 Sense amplifier precharge control
11/02/1989EP0340107A1 Electrically programmable memory with several bits per cell
11/02/1989EP0339852A2 Method of fabricating a layer on a substrate
10/1989
10/31/1989US4878203 Semiconductor non-volatile memory with cut-off circuit when leakage occurs
10/24/1989US4876582 Crystallized silicon-on-insulator nonvolatile memory device
10/18/1989EP0337393A2 2-cell/1-bit type EPROM
10/17/1989US4875191 Integrated read and programming row driver
10/17/1989US4875188 Voltage margining circuit for flash eprom
10/17/1989US4874967 Low power voltage clamp circuit
10/11/1989EP0336679A2 BIC memory cell structure and a manufacturing method thereof
10/11/1989EP0336500A1 Integrated circuit comprising a programmable cell
10/10/1989US4873671 Sequential read access of serial memories with a user defined starting address
10/10/1989US4873670 Complementary semiconductor memory device with pull-up and pull down
10/04/1989EP0335148A2 Method for programming MOS and CMOS rom memories
10/03/1989US4872140 Laser programmable memory array
09/1989
09/27/1989EP0334763A1 Method of testing a fleeting programmable memory, and this memory
09/27/1989EP0334550A2 Nonvolatile RAM cell
09/26/1989US4870618 Semiconductor memory equipped with test circuit for testing data holding characteristic during data programming period
09/26/1989US4870615 Nonvolatile floating gate semiconductor memory device
09/26/1989US4870574 Method for the programming of data in an electrically programmable read-only memory
09/19/1989US4868788 Semiconductor memory device with improved word line drive circuit
09/19/1989US4868619 Single transistor electrically programmable memory device and method
09/13/1989EP0332274A2 EEPROM having a data controlled erasing and writing mode
09/12/1989US4866669 Electronic memory device utilizing silicon-on-sapphire transistors
09/06/1989EP0331113A2 Semiconductor memory device
09/05/1989US4864541 Integrated circuit of the logic circuit type comprising an electrically programmable non-volatile memory
08/1989
08/31/1989DE3900979A1 Elektrisch loeschbares und programmierbares nur-lese-speichergeraet Electrically erasable and programmable read-only-speichergeraet
08/30/1989EP0250479A4 Current metering apparatus.
08/29/1989US4862459 Test method for detecting faulty memory cell of a programmable device
08/29/1989US4862418 Non-volatile, programmable semiconductor memory having reduced testing time
08/29/1989US4862416 Semiconductor memory device with redundant memory cell
08/29/1989US4862413 Semiconductor ROM with reduced supply voltage requirement
08/29/1989US4862348 Microcomputer having high-speed and low-speed operation modes for reading a memory
08/23/1989EP0329238A1 Integrated memory circuit comprising a high-voltage switch connected between a programming voltage generator and an erasable programmable memory, and high-voltage switch suitable for use in such a memory circuit
08/23/1989EP0329182A2 Decoder buffer circuit incorporated in semiconductor memory device
08/23/1989EP0329141A1 Sense circuit incorporated in semiconductor memory device
08/23/1989EP0328918A2 Electrically erasable non-volatile semiconductor memory device
08/22/1989US4860258 Electrically programmable non-volatile memory having sequentially deactivated write circuits
08/22/1989US4860256 Integrated circuit provided with switching elements for changeover to redundancy elements in a memory
08/22/1989US4859882 Sense amplifier
08/16/1989EP0328458A2 Semiconductor memory circuit
08/16/1989EP0328191A1 Memory circuit comprising an erasable programmable memory, generator for generating a programming voltage for the memory, voltage controller and edge controller, both suitable for use in the generator
08/16/1989EP0083212B1 Semiconductor memory device
08/15/1989US4858194 Nonvolatile semiconductor memory device using source of a single supply voltage
08/15/1989US4858192 Semiconductor memory device with redundancy circuit
08/15/1989US4858187 Programming implementation circuit
08/15/1989US4858186 A circuit for providing a load for the charging of an EPROM cell
08/15/1989US4858185 Zero power, electrically alterable, nonvolatile latch
08/09/1989EP0326885A2 Sequential read access of serial memories with a user defined starting address
08/09/1989EP0326883A2 Zero power, electrically alterable, nonvolatile latch
08/09/1989EP0326878A2 Decoder driver circuit for programming high-capacitance lines
08/08/1989US4855956 Semiconductor memory device with improved cell arrangement
08/08/1989US4855248 Method of making a semiconductor ROM device
08/02/1989EP0326465A1 Floating-gate EEPROM memory with a transistor for source line selection
08/02/1989EP0326296A2 High-speed data latch with zero data hold time
08/02/1989EP0326053A2 Programmable memory data protection scheme
08/02/1989EP0326004A2 Circuit for sensing the state of matrix cells in MOS EPROM memories
07/1989
07/26/1989EP0325096A1 A method and an arrangement for reading out updating status information in an integrated circuit
07/25/1989US4852058 Semiconductor memory circuit having inspection circuit
07/25/1989US4851720 Low power sense amplifier for programmable logic device
07/19/1989CN1034086A Off-line and on-line device for microcomputer fixed disk
07/18/1989US4849942 Protection device for an erasable and reprogrammable read only memory
07/18/1989US4849935 Semiconductor memory including transparent latch circuits
07/13/1989WO1989006429A1 Rom cell and array configuration
07/11/1989US4847811 Pre-charging circuit for word lines of a memory system, in particular with programmable cells
07/11/1989US4847808 Read only semiconductor memory having multiple bit cells
07/05/1989EP0323078A2 Electrically-programmable low-impedance anti-fuse element
07/05/1989EP0322900A2 Electrically erasable programmable read-only memory with NAND cell structure
07/04/1989US4845680 Nonvolatile semiconductor memory device
07/04/1989US4845679 Diode-FET logic circuitry
07/04/1989US4845675 High-speed data latch with zero data hold time
06/1989
06/29/1989WO1989006068A1 Low power voltage clamp circuit
06/28/1989EP0322002A2 Voltage supply switching device for nonvolatile memories in MOS technology
06/28/1989EP0321933A2 Device for controlling a Read-only memory, and electronic cash register having such a device
06/27/1989US4843594 Nonvolatile semiconductor memory device with a bias circuit
06/21/1989EP0320916A2 Electrically erasable and programmable read only memory using stacked-gate cell
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