JPH0449399U - - Google Patents

Info

Publication number
JPH0449399U
JPH0449399U JP1990090448U JP9044890U JPH0449399U JP H0449399 U JPH0449399 U JP H0449399U JP 1990090448 U JP1990090448 U JP 1990090448U JP 9044890 U JP9044890 U JP 9044890U JP H0449399 U JPH0449399 U JP H0449399U
Authority
JP
Japan
Prior art keywords
prom
write
read
address
write operation
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
JP1990090448U
Other languages
English (en)
Japanese (ja)
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 filed Critical
Priority to JP1990090448U priority Critical patent/JPH0449399U/ja
Publication of JPH0449399U publication Critical patent/JPH0449399U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Storage Device Security (AREA)
  • Semiconductor Memories (AREA)
JP1990090448U 1990-08-29 1990-08-29 Pending JPH0449399U (en])

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1990090448U JPH0449399U (en]) 1990-08-29 1990-08-29

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1990090448U JPH0449399U (en]) 1990-08-29 1990-08-29

Publications (1)

Publication Number Publication Date
JPH0449399U true JPH0449399U (en]) 1992-04-27

Family

ID=31825212

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1990090448U Pending JPH0449399U (en]) 1990-08-29 1990-08-29

Country Status (1)

Country Link
JP (1) JPH0449399U (en])

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62245353A (ja) * 1986-04-18 1987-10-26 Hitachi Ltd Ｅｅｐｒｏｍのデ−タ書換え防止回路
JPS6443897A (en) * 1987-08-10 1989-02-16 Nec Corp Non-volatile semiconductor memory device capable of being erased and written electrically

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62245353A (ja) * 1986-04-18 1987-10-26 Hitachi Ltd Ｅｅｐｒｏｍのデ−タ書換え防止回路
JPS6443897A (en) * 1987-08-10 1989-02-16 Nec Corp Non-volatile semiconductor memory device capable of being erased and written electrically

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