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:
Dec. 18, 2000
Filed:
Dec. 09, 1998
Tadato Yamagata, Hyogo, JP;
Makoto Hatakenaka, Hyogo, JP;
Shigeki Tomishima, Hyogo, JP;
Akira Yamazaki, Hyogo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A first internal power supply circuit receiving an external power supply voltage for generating a first internal power supply voltage and a second internal power supply circuit receiving the external power supply voltage for generating a second internal power supply voltage are provided within a DRAM. A sense amplifier operates by the first internal power supply voltage. A write driver and a GIO line precharge circuit operate by the second internal power supply voltage. A peripheral circuit operates by the external power supply voltage. As a result, the sense amplifier and the peripheral circuit will not be affected by the operation of the write driver and the GIO line precharge circuit.