JPH0181798U - - Google Patents
Info
- Publication number
- JPH0181798U JPH0181798U JP1987176518U JP17651887U JPH0181798U JP H0181798 U JPH0181798 U JP H0181798U JP 1987176518 U JP1987176518 U JP 1987176518U JP 17651887 U JP17651887 U JP 17651887U JP H0181798 U JPH0181798 U JP H0181798U
- Authority
- JP
- Japan
- Prior art keywords
- ecc
- memory device
- semiconductor memory
- redundant bit
- data
- 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
Links
- 239000004065 semiconductor Substances 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Techniques For Improving Reliability Of Storages (AREA)
Description
図は本考案の一実施例のブロツク図である。
ＡＢ……アドレスバツフア、ＭＭ……記憶空間
、ＣＭ……冗長ビツト、ＥＣＣ……誤り訂正回路
、ＤＢ……データバツフア、ＣＯＮＴ……制御回
路。
The figure is a block diagram of one embodiment of the present invention. AB...Address buffer, MM...Storage space, CM...Redundant bit, ECC...Error correction circuit, DB...Data buffer, CONT...Control circuit.
Claims (1)
記憶装置において、ＥＣＣ用の冗長ビツトとして
外部からアクセス可能な高速書替可能なメモリを
設けることにより、冗長ビツト内のデータ変更に
よつて実効的にＲＯＭ内のデータの高速変更を可
能とすることを特徴とした不揮発性半導体記憶装
置。 In a non-volatile semiconductor memory device with an ECC (error correction circuit), by providing an externally accessible high-speed rewritable memory as a redundant bit for the ECC, data changes in the redundant bit can effectively erase the ROM. A nonvolatile semiconductor memory device characterized by being capable of high-speed change of data therein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987176518U JPH0181798U (en) | 1987-11-20 | 1987-11-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987176518U JPH0181798U (en) | 1987-11-20 | 1987-11-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0181798U true JPH0181798U (en) | 1989-05-31 |
Family
ID=31468248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987176518U Pending JPH0181798U (en) | 1987-11-20 | 1987-11-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0181798U (en) |
-
1987
- 1987-11-20 JP JP1987176518U patent/JPH0181798U/ja active Pending
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