Semiconductor memory

Details Semiconductor memory Semiconductor memory

2006-06-20

2006-06-20

Phung, Anh (Department: 2824)

Static information storage and retrieval

Read/write circuit

Data refresh

C365S189080, C365S233500

Reexamination Certificate

active

07064998

ABSTRACT:
A timer measures a predetermined time from the reception of an external access signal, and outputs an access request signal after the predetermined time has elapsed. The external access signal causes a memory core to execute a read operation, and the access request signal causes the memory core to operate. The predetermined time is set to be longer than a core operation time for the memory core to perform a single operation. The memory core thus performs no operation when the external access signal varies in a time shorter than the predetermined time. Consequently, it is possible to prevent the memory core from malfunctioning and data retained therein from crashing even when external access signals are supplied at intervals at which the memory core is unable to properly operate.

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Data Sheet Mos Intergrated Circuit uPD4632312-X 32M-BIT CMOS Mobile Specified RAM 2M-WORD by 16-BIT Extended Temperature Operation, Document No. M15406EJ8V0DS00 (8thEdition), Oct. 2002, pp. 1-47.

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