The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 01, 2002
Filed:
Mar. 20, 2000
Sadayuki Morita, Higashiyamato, JP;
Takeshi Sakata, Kodaira, JP;
Satoru Hanzawa, Hachiouji, JP;
Takahiro Sonoda, Fussa, JP;
Haruko Tadokoro, Higashimurayama, JP;
Hiroshi Ichikawa, Hachiouji, JP;
Osamu Nagashima, Hamura, JP;
Other;
Abstract
An SDRAM has its operation mode selected to be the SDR mode in response to the first state of the external terminal (OPT), thereby releasing data, which has been read out of a memory mat, in response to a clock signal produced by a clock regenerating circuit having a function of comparing the phases of the input and output of the circuit, or selected to be the DDR mode in response to the second state of the external terminal (OPT), thereby releasing data, which has been read out of the memory mat, in response to a clock signal produced by a clock signal generation circuit in synchronism with an external clock signal.