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Patent Searching and Data


Title:
SEMICONDUCTOR STORAGE DEVICE
Document Type and Number:
Japanese Patent JPH08235852
Kind Code:
A
Abstract:

PURPOSE: To simultaneously execute writing and reading operations and to increase the speed of data processing.

CONSTITUTION: The device is provided with upper and lower priority data input and output terminal groups 81 and 82 and inputting and outputting of data are conducted at the group unit. When an early write mode specification is detected by an early write detecting circuit included in a clock generating circuit 2 and one group is specified for a writing, data are taken in by a lower priority input buffer 4 or an upper priority input buffer 5 which are controlled by writing control circuits 31 or 32. At the same time, other group, in which no data taking is conducted for data for a writing, is used for a reading by a lower priority output buffer 6 or an upper priority output buffer 7 in responding to a mode detection. Thus, writing and reading operations are simultaneously executed in the mode.


Inventors:
SHIMODA MASAKI
Application Number:
JP1995000040116
Publication Date:
September 13, 1996
Filing Date:
February 28, 1995
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
G11C11/401; G11C7/10; G11C11/409; (IPC1-7): G11C11/401
Attorney, Agent or Firm:
深見 久郎 (外3名)