SEMICONDUCTOR MEMORY

PURPOSE: To obtain a semiconductor memory such as dynamic RAM which achieves a higher convenience while suppressing the rise in costs thereof. CONSTITUTION: A dynamic RAM or the like which is made in a × 1 bit configuration or in a × 4 bit configuration while having a 4 bit nibble mode is provided w...

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Bibliographic Details
Main Authors KOTANI HIROAKI, KAJITANI KAZUHIKO, OSHIMA KAZUYOSHI, KASAMA YASUHIRO, UDO SHINJI
Format Patent
LanguageEnglish
Published 23.04.1996
Edition6
Subjects
INFORMATION STORAGE
PHYSICS
STATIC STORES
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Summary:PURPOSE: To obtain a semiconductor memory such as dynamic RAM which achieves a higher convenience while suppressing the rise in costs thereof. CONSTITUTION: A dynamic RAM or the like which is made in a × 1 bit configuration or in a × 4 bit configuration while having a 4 bit nibble mode is provided with a serial counter containing a column address buffer CADB as a part thereof to specify a series of column addresses in a serial mode with the ×4 bit configuration. In the serial mode with the × 1 bit configuration, four memory cells are selected simultaneously and data read out of the four memory cells selected simultaneously are selected alternatively in sequence with a nibble counter NCTR for a nibble mode while the serial counter SCTR is updated by a carry signal of the nibble counter NCTR.
Bibliography:Application Number: JP19940243262