Semiconductor memory and method of setting type

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 5539692
SERIAL NO

08191411

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A semiconductor chip is provided with a function selection circuit for selecting memory functions according to the information stored in nonvolatile memory elements is sealed in a package, and the memory functions are set finally by writing the nonvolatile memory element in that state or in a state in which the semiconductor chip is mounted on a board. By setting the type of a semiconductor memory according to the above procedure, the process from the wafer process up to the assembling step can be made common, and hence the mass-productibity and the production control can be facilitated. Semiconductor memories having memory functions conforming to user specifications can be provided in a short time.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
PS4 LUXCO S.A.R.L.LUXEMBOURG, LU167

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hori, Ryoichi Hinode-machi, JP 87 1677
Horiguchi, Masashi Kawasaki, JP 188 3147
Kajigaya, Kazuhiko Iruma, JP 241 2206
Kubo, Masaharu Hachiouji, JP 53 1187
Matsumoto, Tetsuro Higashiyamato, JP 47 865
Nakagome, Yoshinobu Hamura, JP 102 2501

Cited Art Landscape

Patent Info (Count) # Cites Year
 
LATTICE SEMICONDUCTOR CORPORATION (1)
* 5212652 Programmable gate array with improved interconnect structure 83 1989
 
MITSUBISHI DENKI KABUSHIKI KAISHA (1)
* 5249155 Semiconductor device incorporating internal voltage down converting circuit 58 1992
 
XILINX, INC. (1)
* 5343406 Distributed memory architecture for a configurable logic array and method for using distributed memory 278 1989
 
FUJITSU LIMITED (1)
* 4965768 Semiconductor device having programmable read only memory cells for specific mode 6 1987
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
PANASONIC CORPORATION (2)
* 7148503 Semiconductor device, function setting method thereof, and evaluation method thereof 1 2001
* 2002/0014,699 Semiconductor device, function setting method thereof, and evaluation method thereof 1 2001
 
MICRON TECHNOLOGY, INC. (1)
* 5978297 Method and apparatus for strobing antifuse circuits in a memory device 23 1998
 
SAMSUNG ELECTRONICS CO., LTD. (3)
* 5771198 Source voltage generating circuit in semiconductor memory 3 1996
* 5929691 Mode setting circuit for a memory device 30 1997
* 6067649 Method and apparatus for a low power self test of a memory subsystem 69 1998
 
XILINX, INC. (2)
* 6359248 Method for marking packaged integrated circuits 52 1999
6674036 Method for marking packaged integrated circuits 3 2001
 
INVENTEC CORPORATION (2)
* 7631232 Parallel burning system and method 0 2007
* 2009/0089,469 Parallel burunig system and method 3 2007
 
ROUND ROCK RESEARCH, LLC (2)
* 7023755 Low power control circuit and method for a memory device 0 2003
* 2005/0117,432 Low power control circuit and method for a memory device 1 2003
 
NEOSEM, INC. (4)
* 6182253 Method and system for automatic synchronous memory identification 30 1997
* 5995424 Synchronous memory test system 117 1997
* 5812472 Nested loop method of identifying synchronous memories 28 1997
* 5914902 Synchronous memory tester 81 1998
 
ACTEL CORPORATION (1)
6362649 Field programmable gate array with mask programmed input and output buffers 18 1999
 
MITSUBISHI DENKI KABUSHIKI KAISHA (1)
* 5818768 Operation mode setting circuit in semiconductor device 5 1996
 
DROPBOX, INC. (1)
* 6518823 One-time programmable logic device 10 2000
 
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. (2)
7110314 Semiconductor memory device and method for initializing the same 2 2003
* 2006/0275,932 Semiconductor device, function setting method thereof, and evaluation method thereof 0 2006
 
HYUNDAI ELECTRONICS INDUSTRIES CO., LTD. (1)
6169694 Circuit and method for fully on-chip wafer level burn-in test 10 1999
 
MICROSEMI SOC CORP. (2)
* 5959466 Field programmable gate array with mask programmed input and output buffers 26 1997
6150837 Enhanced field programmable gate array 171 1997
* Cited By Examiner