Semiconductor memory device and method of programming the same
US6031760A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 29, 1998 |
| Grant date | Feb 29, 2000 |
| Priority date | — |
| Expiry date | Jul 29, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C16/3454
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A semiconductor memory device includes sense amplifier circuits each having a latch circuit connected to a sense node and storing circuits for storing identification data indicating sense amplifier circuits instructed to perform program when program data is loaded into the sense amplifier circuits. Before program verify read operation, data in the sense amplifier circuits instructed to perform programming by the loaded data is reset to the loaded data on the basis of the identification data in the storing circuits. This suppresses any rise in the potential of the common source line of a plurality of memory cells when a program verify operation is performed or when a page divisional program operation is performed, or suppresses any difference between the common source line potential rises in a program verify read operation and a normal read operation, thereby preventing incomplete programming. This improves the reliability of the program verify read operation and the page divisional program operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.