JPS648598A - Ultraviolet erasure eprom chip - Google Patents
Ultraviolet erasure eprom chipInfo
- Publication number
- JPS648598A JPS648598A JP16476087A JP16476087A JPS648598A JP S648598 A JPS648598 A JP S648598A JP 16476087 A JP16476087 A JP 16476087A JP 16476087 A JP16476087 A JP 16476087A JP S648598 A JPS648598 A JP S648598A
- Authority
- JP
- Japan
- Prior art keywords
- access time
- erased state
- address
- memory information
- maximum
- 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)
Abstract
PURPOSE:To satisfy product catalog requirements even by performing access time check at the time shipping test in the erased state by selecting the readout access time of memory information in the erased state as the maximum access time. CONSTITUTION:An address switching detection circuit 2 sets a sense amplifier circuit 5 and an output buffer circuit 6 so as to have a memory information output in the latest write state of the access time in the voltage level. Thus, even in the address access time when the selected memory information is switched from '1' to '1' is read once through the level '0' and the address access time is used as the maximum access time. Since the readout address access time in the erased state, that is, when all bits are logical 1 is set to the maximum access time without fail, the access time test satisfying the requirement of the product catalog is executed by only the access time check in the erased state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16476087A JPS648598A (en) | 1987-06-30 | 1987-06-30 | Ultraviolet erasure eprom chip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16476087A JPS648598A (en) | 1987-06-30 | 1987-06-30 | Ultraviolet erasure eprom chip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS648598A true JPS648598A (en) | 1989-01-12 |
Family
ID=15799405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16476087A Pending JPS648598A (en) | 1987-06-30 | 1987-06-30 | Ultraviolet erasure eprom chip |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS648598A (en) |
-
1987
- 1987-06-30 JP JP16476087A patent/JPS648598A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR950004854B1 (en) | Semiconductor memory device | |
| EP0312239A3 (en) | Message fifo buffer controller | |
| KR930020467A (en) | Nonvolatile Semiconductor Memory | |
| KR970051455A (en) | Semiconductor memory device having redundant cell test control circuit | |
| TW363189B (en) | Semiconductor non-volatile memory apparatus and the computer system to make use of the apparatus | |
| KR880000960A (en) | Semiconductor memory | |
| KR920017115A (en) | Semiconductor memory device | |
| KR960025777A (en) | Semiconductor Memory Device With Precharge Circuit | |
| KR910010308A (en) | Error Correction Circuit of EEPROM | |
| JPS648598A (en) | Ultraviolet erasure eprom chip | |
| JPS573298A (en) | Memory integrated circuit | |
| KR950006876A (en) | Roll call circuit | |
| KR880014569A (en) | Semiconductor memory | |
| JPS6446300A (en) | Semiconductor memory | |
| JPS57127997A (en) | Semiconductor integrated storage device | |
| JPS55163697A (en) | Memory device | |
| JPS5712498A (en) | Integrated circuit device for memory | |
| JPS578980A (en) | Memory device | |
| JPS5712496A (en) | Integrated circuit device for memory | |
| EP0029304A3 (en) | Bubble memory device | |
| JPS6448175A (en) | Address control method for picture memory | |
| EP0397194A3 (en) | Semiconductor memory device having two types of memory cell | |
| JPS5622292A (en) | Memory element | |
| JPS6450137A (en) | Memory circuit | |
| JPS5748149A (en) | Memory device |