JPS6452199U - - Google Patents

Info

Publication number
JPS6452199U
JPS6452199U JP14498187U JP14498187U JPS6452199U JP S6452199 U JPS6452199 U JP S6452199U JP 14498187 U JP14498187 U JP 14498187U JP 14498187 U JP14498187 U JP 14498187U JP S6452199 U JPS6452199 U JP S6452199U
Authority
JP
Japan
Prior art keywords
eeprom
area
sum value
write
control device
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.)
Granted
Application number
JP14498187U
Other languages
Japanese (ja)
Other versions
JPH0731440Y2 (en
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 JP1987144981U priority Critical patent/JPH0731440Y2/en
Publication of JPS6452199U publication Critical patent/JPS6452199U/ja
Application granted granted Critical
Publication of JPH0731440Y2 publication Critical patent/JPH0731440Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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  • Techniques For Improving Reliability Of Storages (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案を実施したＥＥＰＲＯＭ制御装
置の構成図、第２図ａ，ｂ，ｃは本考案装置にお
けるＥＥＰＲＯＭ１のサム領域１２を表わす図、
第３図は従来装置のＥＥＰＲＯＭの構成を表わす
図である。 １……ＥＥＰＲＯＭ、１１……データ領域、１
２……サム領域、２……中央処理装置ＣＰＵ、３
……外部データ設定装置、ＤＢ……データ・バス
。 FIG. 1 is a block diagram of an EEPROM control device embodying the present invention, and FIGS. 2 a, b, and c are views showing the thumb area 12 of the EEPROM 1 in the device of the present invention.
FIG. 3 is a diagram showing the configuration of an EEPROM of a conventional device. 1...EEPROM, 11...Data area, 1
2...Thumb area, 2...Central processing unit CPU, 3
...External data setting device, DB...Data bus.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] ＥＥＰＲＯＭを内蔵し、このＥＥＰＲＯＲＭに
書き込まれた設定データに従つて動作する計器に
設けられるＥＥＰＲＯＭ制御装置において、ＥＥ
ＰＲＯＭに書き込みデータ照合用のサム値を書き
込むアドレス領域を３バイト以上設け、この領域
に前記サム値を書き込む際、この領域内の１バイ
ト・サム値を消去して他の１バイトに今回のサム
値に関連した値を書き込む動作を循環する書き込
み処理部を設けたことを特徴とするＥＥＰＲＯＭ
制御装置。 In an EEPROM control device installed in an instrument that has a built-in EEPROM and operates according to the setting data written in this EEPROM,
An address area of 3 bytes or more is provided in the PROM to write the sum value for checking write data, and when writing the sum value to this area, one byte of the sum value in this area is erased and the current sum is written to another byte. An EEPROM characterized by being provided with a write processing unit that cycles through operations of writing values related to values.
Control device.
JP1987144981U 1987-09-22 1987-09-22 EEPROM control device Expired - Lifetime JPH0731440Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1987144981U JPH0731440Y2 (en) 1987-09-22 1987-09-22 EEPROM control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1987144981U JPH0731440Y2 (en) 1987-09-22 1987-09-22 EEPROM control device

Publications (2)

Publication Number Publication Date
JPS6452199U true JPS6452199U (en) 1989-03-30
JPH0731440Y2 JPH0731440Y2 (en) 1995-07-19

Family

ID=31413169

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1987144981U Expired - Lifetime JPH0731440Y2 (en) 1987-09-22 1987-09-22 EEPROM control device

Country Status (1)

Country Link
JP (1) JPH0731440Y2 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS618798A (en) * 1984-06-21 1986-01-16 Nec Corp Nonvolatile storage device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS618798A (en) * 1984-06-21 1986-01-16 Nec Corp Nonvolatile storage device

Also Published As

Publication number Publication date
JPH0731440Y2 (en) 1995-07-19

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