JPS6460894A - Non-volatile semiconductor memory device - Google Patents
Non-volatile semiconductor memory deviceInfo
- Publication number
- JPS6460894A JPS6460894A JP21751287A JP21751287A JPS6460894A JP S6460894 A JPS6460894 A JP S6460894A JP 21751287 A JP21751287 A JP 21751287A JP 21751287 A JP21751287 A JP 21751287A JP S6460894 A JPS6460894 A JP S6460894A
- Authority
- JP
- Japan
- Prior art keywords
- bits
- data
- latched
- memory cell
- latch means
- 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
Landscapes
- Read Only Memory (AREA)
- Techniques For Improving Reliability Of Storages (AREA)
- Memory System (AREA)
Abstract
PURPOSE:To reduce the number of steps of programming at the time of reading and writing the content of a memory, by performing read/write in the inside of an EEPROM by a large number of bits, and performing the interface with the outside of the EEPROM by a few number of bits. CONSTITUTION:In a readout mode, data of N bits from a memory cell 2 is latched by latch means 4 and 5, and the data is taken out in a unit of M bits to an external bus 17. Meanwhile, in a write mode, the data of M bits desired to be written is fetched from the bus after the data of N bits from the memory cell 2 is latched by the latch means 4 and 5, and latched contents in areas of M bits in the latch means 4 and 5 are updated, and are written on the memory cell 2 in a unit of N bits. In such a way, it possible to reduce the number of steps of programming at the time of reading and writing the content of the memory.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21751287A JPS6460894A (en) | 1987-08-31 | 1987-08-31 | Non-volatile semiconductor memory device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21751287A JPS6460894A (en) | 1987-08-31 | 1987-08-31 | Non-volatile semiconductor memory device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6460894A true JPS6460894A (en) | 1989-03-07 |
Family
ID=16705391
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP21751287A Pending JPS6460894A (en) | 1987-08-31 | 1987-08-31 | Non-volatile semiconductor memory device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6460894A (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5685130A (en) * | 1979-12-12 | 1981-07-11 | Mitsubishi Electric Corp | Rom access circuit |
JPS6222297A (en) * | 1985-07-22 | 1987-01-30 | Mitsubishi Electric Corp | Semiconductor memory device |
-
1987
- 1987-08-31 JP JP21751287A patent/JPS6460894A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5685130A (en) * | 1979-12-12 | 1981-07-11 | Mitsubishi Electric Corp | Rom access circuit |
JPS6222297A (en) * | 1985-07-22 | 1987-01-30 | Mitsubishi Electric Corp | Semiconductor memory device |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR850008023A (en) | Semiconductor memory | |
JPS61267846A (en) | Integrated circuit device with memory | |
JPS6443897A (en) | Non-volatile semiconductor memory device capable of being erased and written electrically | |
EP0368310A3 (en) | Nonvolatile memory device capable of outputting correct read data at proper time | |
JPS6460894A (en) | Non-volatile semiconductor memory device | |
JPS55149084A (en) | Clock apparatus | |
KR890013651A (en) | Command port structure for flash memory controlled by processor | |
EP0945874A3 (en) | Nonvolatile semiconductor memory device | |
GB1278664A (en) | An associative memory | |
JPS6443894A (en) | Semiconductor memory | |
JPS57135490A (en) | Storage device | |
JPS54119846A (en) | Memory unit | |
JPS55129996A (en) | Write system of read-only memory | |
JPS6489099A (en) | Restorage device | |
JPS6466727A (en) | Disk access control system | |
JPS57135498A (en) | Semiconductor memory | |
EP0397194A3 (en) | Semiconductor memory device having two types of memory cell | |
JPS5532288A (en) | Lsi memory | |
JPS6462897A (en) | Storage device | |
JPS5585932A (en) | Pick up system for readout data length | |
JPS56159885A (en) | Storage device | |
JPS5624606A (en) | Programmable controller | |
JPS5794991A (en) | Diagnosing method for cash memory | |
JPS54107225A (en) | Memory control system | |
JPS56137600A (en) | Alternative control check system for memory device |