ITRM920707A1 - Apparecchio e metodo per la protezione di memorie da scritture spurie. - Google Patents

Apparecchio e metodo per la protezione di memorie da scritture spurie.

Info

Publication number
ITRM920707A1
ITRM920707A1 IT000707A ITRM920707A ITRM920707A1 IT RM920707 A1 ITRM920707 A1 IT RM920707A1 IT 000707 A IT000707 A IT 000707A IT RM920707 A ITRM920707 A IT RM920707A IT RM920707 A1 ITRM920707 A1 IT RM920707A1
Authority
IT
Italy
Prior art keywords
signal
generation
memory device
data
spury
Prior art date
Application number
IT000707A
Other languages
English (en)
Inventor
Dale Bengtson
Lawrence D Cepuran
Terrie Frane
Francesco Rago
Original Assignee
Motorola Inc
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 Motorola Inc filed Critical Motorola Inc
Publication of ITRM920707A0 publication Critical patent/ITRM920707A0/it
Publication of ITRM920707A1 publication Critical patent/ITRM920707A1/it
Application granted granted Critical
Publication of IT1258856B publication Critical patent/IT1258856B/it

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C29/00—Checking stores for correct operation ; Subsequent repair; Testing stores during standby or offline operation
    • G11C29/70—Masking faults in memories by using spares or by reconfiguring
    • G11C29/88—Masking faults in memories by using spares or by reconfiguring with partially good memories
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/004—Error avoidance
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C7/00—Arrangements for writing information into, or reading information out from, a digital store
    • G11C7/22—Read-write [R-W] timing or clocking circuits; Read-write [R-W] control signal generators or management 
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C7/00—Arrangements for writing information into, or reading information out from, a digital store
    • G11C7/24—Memory cell safety or protection circuits, e.g. arrangements for preventing inadvertent reading or writing; Status cells; Test cells
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/0796—Safety measures, i.e. ensuring safe condition in the event of error, e.g. for controlling element

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Techniques For Improving Reliability Of Storages (AREA)
  • Mobile Radio Communication Systems (AREA)
ITRM920707A 1991-10-01 1992-09-28 Apparecchio e metodo per la protezione di memorie da scritture spurie. IT1258856B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US76989691A 1991-10-01 1991-10-01

Publications (3)

Publication Number Publication Date
ITRM920707A0 ITRM920707A0 (it) 1992-09-28
ITRM920707A1 true ITRM920707A1 (it) 1994-03-28
IT1258856B IT1258856B (it) 1996-03-01

Family

ID=25086828

Family Applications (1)

Application Number Title Priority Date Filing Date
ITRM920707A IT1258856B (it) 1991-10-01 1992-09-28 Apparecchio e metodo per la protezione di memorie da scritture spurie.

Country Status (5)

Country Link
CA (1) CA2097308A1 (it)
FR (1) FR2681965A1 (it)
IT (1) IT1258856B (it)
MX (1) MX9205634A (it)
WO (1) WO1993007565A1 (it)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6026293A (en) * 1996-09-05 2000-02-15 Ericsson Inc. System for preventing electronic memory tampering
GB2356952B (en) * 1996-12-25 2001-07-25 Fujitsu Ltd Semiconductor memory device
JP4154006B2 (ja) * 1996-12-25 2008-09-24 富士通株式会社 半導体記憶装置

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4245344A (en) * 1979-04-02 1981-01-13 Rockwell International Corporation Processing system with dual buses
US4493031A (en) * 1982-08-25 1985-01-08 At&T Bell Laboratories Memory write protection using timers
JPS6124091A (ja) * 1984-07-12 1986-02-01 Nec Corp メモリ回路
US4742469A (en) * 1985-10-31 1988-05-03 F.M.E. Corporation Electronic meter circuitry
US4816654A (en) * 1986-05-16 1989-03-28 American Telephone And Telegraph Company Improved security system for a portable data carrier
US4843385A (en) * 1986-07-02 1989-06-27 Motorola, Inc. Electronic lock system for a two-way radio
FR2608803B1 (fr) * 1986-12-19 1991-10-25 Eurotechnique Sa Dispositif de protection d'une memoire morte effacable et reprogrammable
US5001670A (en) * 1987-02-06 1991-03-19 Tektronix, Inc. Nonvolatile memory protection
JPS63271679A (ja) * 1987-04-30 1988-11-09 Toshiba Corp デ−タ書込み方式
US4860341A (en) * 1987-06-02 1989-08-22 Motorola, Inc. Radiotelephone credit card call approval synchronization
US4970692A (en) * 1987-09-01 1990-11-13 Waferscale Integration, Inc. Circuit for controlling a flash EEPROM having three distinct modes of operation by allowing multiple functionality of a single pin
JPH0648838B2 (ja) * 1988-07-18 1994-06-22 株式会社田村電機製作所 公衆電話機
FI86922C (fi) * 1990-01-05 1992-10-26 Raha Automaattiyhdistys Foerfarande och anordning foer kontrollering av inskrivning i ett minne

Also Published As

Publication number Publication date
CA2097308A1 (en) 1993-04-02
ITRM920707A0 (it) 1992-09-28
WO1993007565A1 (en) 1993-04-15
FR2681965A1 (fr) 1993-04-02
MX9205634A (es) 1993-04-01
IT1258856B (it) 1996-03-01

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Legal Events

Date Code Title Description
0001 Granted