JPH01124192A - Semiconductor memory device - Google Patents

Semiconductor memory device

Info

Publication number
JPH01124192A
JPH01124192A JP28145287A JP28145287A JPH01124192A JP H01124192 A JPH01124192 A JP H01124192A JP 28145287 A JP28145287 A JP 28145287A JP 28145287 A JP28145287 A JP 28145287A JP H01124192 A JPH01124192 A JP H01124192A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
output
pulse
buffer circuit
pulse width
pulse output
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
JP28145287A
Inventor
Yasumasa Yamada
Original Assignee
Nec Ic Microcomput Syst Ltd
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

Links

Abstract

PURPOSE: To easily discriminate whether a memory cell itself has a problem or malfunction takes place depending on the pulse width of a pulse output by selecting the pulse output or the output of a buffer circuit according to a logic level of a mode selection signal so as to use the result as a control signal.
CONSTITUTION: A timing generator 4 includes a buffer circuit receiving a clock signal CLK and giving an output and a selection circuit selecting either a pulse output or the output of the buffer circuit depending on the logic level of a mode selection signal TES and using the result as a control signal. Thus, based on the pulse output of a predetermined pulse width, a semiconductor memory device writes or reads the data and when a malfunction takes place, the selection signal TES controls the timing generation circuit 4 to output a clock signal in place of the pulse output via the buffer circuit and whether malfunction takes place in relation to the pulse width of the pulse output or the memory cell itself has a problem is easily discriminated by varying the pulse width of the clock signal optionally.
COPYRIGHT: (C)1989,JPO&Japio
JP28145287A 1987-11-06 1987-11-06 Semiconductor memory device Pending JPH01124192A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP28145287A JPH01124192A (en) 1987-11-06 1987-11-06 Semiconductor memory device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP28145287A JPH01124192A (en) 1987-11-06 1987-11-06 Semiconductor memory device

Publications (1)

Publication Number Publication Date
JPH01124192A true true JPH01124192A (en) 1989-05-17

Family

ID=17639376

Family Applications (1)

Application Number Title Priority Date Filing Date
JP28145287A Pending JPH01124192A (en) 1987-11-06 1987-11-06 Semiconductor memory device

Country Status (1)

Country Link
JP (1) JPH01124192A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6287469B1 (en) * 1997-10-17 2001-09-11 Ashco-A-Corporation Home wastewater treatment plant

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6287469B1 (en) * 1997-10-17 2001-09-11 Ashco-A-Corporation Home wastewater treatment plant

Similar Documents

Publication Publication Date Title
JPS61148692A (en) Memory device
JPS6276092A (en) Semiconductor memory device
JPS62103900A (en) Semiconductor memory
JPS6365711A (en) Semiconductor integrated logic circuit
JPS61245255A (en) Nonvolatile memory device
JPH01285088A (en) Semiconductor storage device
JPH023177A (en) Semiconductor integrated circuit
JPS615493A (en) Memory device
JPS61126684A (en) Semiconductor integrating circuit with built-in memory
JPS593781A (en) Static semiconductor storage device
JPH03107994A (en) Integrated circuit and pair of the same for display element driving
JPS63131290A (en) Data writer/reader
JPS5990067A (en) Pattern generator for logical circuit test
JPH04115753A (en) Elastic memory control circuit
JPS62177787A (en) Semiconductor memory device
JPS5518778A (en) Pseudo fault generator
JPH01310390A (en) Frame memory control system
JPS6432489A (en) Memory device
JPH023834A (en) Micro computer system
JPH01245466A (en) Disk reproducing device
JPS6041150A (en) Storage device control system
JPH02158997A (en) Storage device
JPS6142794A (en) Sense amplifier system of semiconductor memory device
JPS5399736A (en) Semiconductor memory unit
JPH0196898A (en) Semiconductor memory device equipped with self-diagnosis function