JPS6455794A - Semiconductor memory - Google Patents

Semiconductor memory

Info

Publication number
JPS6455794A
JPS6455794A JP62213391A JP21339187A JPS6455794A JP S6455794 A JPS6455794 A JP S6455794A JP 62213391 A JP62213391 A JP 62213391A JP 21339187 A JP21339187 A JP 21339187A JP S6455794 A JPS6455794 A JP S6455794A
Authority
JP
Japan
Prior art keywords
port
memory
pipeline
cycle
rise
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP62213391A
Other languages
Japanese (ja)
Inventor
Naoki Nishi
Naoya Ono
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Priority to JP62213391A priority Critical patent/JPS6455794A/en
Publication of JPS6455794A publication Critical patent/JPS6455794A/en
Pending legal-status Critical Current

Links

Landscapes

  • Static Random-Access Memory (AREA)
  • Dram (AREA)

Abstract

PURPOSE:To realize a multi-access memory by using a pipeline and assigning alternately a cycle time, for which the high speed is executed by the pipeline operation, to first and second ports. CONSTITUTION:For the pipeline memory, a row address latch 7 and a column address latch 8 are provided among a row address decoder 5, a column address decoder 6 and a memory cell array 9. A cycle C1 to start from the rise of a clock CLK1 is assigned to a first port and a cycle C2 to start from the rise of a clock CLK2 is assigned to a second port. This is controlled by a port switching signal SEL. Thus, an image memory can be realized in which the access of the writing and reading to a random address from the first port and the reading to the continuous address can be executed from the second port, for a memory 9.
JP62213391A 1987-08-26 1987-08-26 Semiconductor memory Pending JPS6455794A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62213391A JPS6455794A (en) 1987-08-26 1987-08-26 Semiconductor memory

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62213391A JPS6455794A (en) 1987-08-26 1987-08-26 Semiconductor memory

Publications (1)

Publication Number Publication Date
JPS6455794A true JPS6455794A (en) 1989-03-02

Family

ID=16638425

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62213391A Pending JPS6455794A (en) 1987-08-26 1987-08-26 Semiconductor memory

Country Status (1)

Country Link
JP (1) JPS6455794A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002190197A (en) * 2000-12-20 2002-07-05 Fujitsu Ltd Semiconductor storage device
JP2002245776A (en) * 2001-02-14 2002-08-30 Fujitsu Ltd Semiconductor memory
JP2005085344A (en) * 2003-09-08 2005-03-31 Hitachi Ulsi Systems Co Ltd Semiconductor memory device and semiconductor integrated circuit
JP2011159377A (en) * 2010-01-29 2011-08-18 Hynix Semiconductor Inc Data output circuit of semiconductor memory and control method of the same
US8547776B2 (en) 2000-12-20 2013-10-01 Fujitsu Semiconductor Limited Multi-port memory based on DRAM core

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002190197A (en) * 2000-12-20 2002-07-05 Fujitsu Ltd Semiconductor storage device
US8547776B2 (en) 2000-12-20 2013-10-01 Fujitsu Semiconductor Limited Multi-port memory based on DRAM core
US8687456B2 (en) 2000-12-20 2014-04-01 Fujitsu Semiconductor Limited Multi-port memory based on DRAM core
US8717842B2 (en) 2000-12-20 2014-05-06 Fujitsu Semiconductor Limited Multi-port memory based on DRAM core
JP2002245776A (en) * 2001-02-14 2002-08-30 Fujitsu Ltd Semiconductor memory
JP2005085344A (en) * 2003-09-08 2005-03-31 Hitachi Ulsi Systems Co Ltd Semiconductor memory device and semiconductor integrated circuit
JP2011159377A (en) * 2010-01-29 2011-08-18 Hynix Semiconductor Inc Data output circuit of semiconductor memory and control method of the same

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