JPH0359887A - Reading circuit for memory - Google Patents

Reading circuit for memory

Info

Publication number
JPH0359887A
JPH0359887A JP19479589A JP19479589A JPH0359887A JP H0359887 A JPH0359887 A JP H0359887A JP 19479589 A JP19479589 A JP 19479589A JP 19479589 A JP19479589 A JP 19479589A JP H0359887 A JPH0359887 A JP H0359887A
Authority
JP
Japan
Prior art keywords
im
memory
comparison
current
comes
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
JP19479589A
Inventor
Hideki Sato
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 JP19479589A priority Critical patent/JPH0359887A/en
Publication of JPH0359887A publication Critical patent/JPH0359887A/en
Application status is Pending legal-status Critical

Links

Abstract

PURPOSE: To set a comparison current by arranging in parallel a pair of memory elements, one of which that is the same structure as a memory element is in a write state and the other in a deleted state as comparison elements.
CONSTITUTION: A pair of the memory cells 4 and 5, one of which having the same structure as the memory element 3 is in the write state and the other is in the deleted state are arranged in parallel and constituted as the comparison elements. The mean of the currents in the write and deleted states of the memory cells can be set as the comparison current Iref. Since the memory cells 3-5 are the same size, it comes to be Iref=IM(writing)+IM(deletion)=2×(IM (writing)+IM(deletion))-/2 and the current twice as much as the mean value comes to flow. Thus, the size of a transistor is changed in such a way that the current value of a p-channel type transistor 2' comes to twice as much as a p-channel type transistor 1. Thus, the comparison current Iref can be set.
COPYRIGHT: (C)1991,JPO&Japio
JP19479589A 1989-07-27 1989-07-27 Reading circuit for memory Pending JPH0359887A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19479589A JPH0359887A (en) 1989-07-27 1989-07-27 Reading circuit for memory

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19479589A JPH0359887A (en) 1989-07-27 1989-07-27 Reading circuit for memory

Publications (1)

Publication Number Publication Date
JPH0359887A true JPH0359887A (en) 1991-03-14

Family

ID=16330385

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19479589A Pending JPH0359887A (en) 1989-07-27 1989-07-27 Reading circuit for memory

Country Status (1)

Country Link
JP (1) JPH0359887A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08235884A (en) * 1994-11-15 1996-09-13 Sgs Thomson Microelectron Ltd Reference circuit
JP2010267373A (en) * 2000-11-27 2010-11-25 Hitachi Ltd Semiconductor device
KR20130086310A (en) * 2012-01-24 2013-08-01 세이코 인스트루 가부시키가이샤 Reading circuit of nonvolatile memory device
JP2016170846A (en) * 2015-03-16 2016-09-23 セイコーエプソン株式会社 Semiconductor integrated circuit device and electronic apparatus using the same

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08235884A (en) * 1994-11-15 1996-09-13 Sgs Thomson Microelectron Ltd Reference circuit
JP2010267373A (en) * 2000-11-27 2010-11-25 Hitachi Ltd Semiconductor device
KR20130086310A (en) * 2012-01-24 2013-08-01 세이코 인스트루 가부시키가이샤 Reading circuit of nonvolatile memory device
JP2013152768A (en) * 2012-01-24 2013-08-08 Seiko Instruments Inc Reading circuit of nonvolatile memory device
JP2016170846A (en) * 2015-03-16 2016-09-23 セイコーエプソン株式会社 Semiconductor integrated circuit device and electronic apparatus using the same

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