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:
Jun. 22, 1993
Filed:
Jul. 25, 1991
Miki Nishimori, Nagoya, JP;
Hidenori Nomura, Kasugai, JP;
Fujitsu VLSI Limited, Kasugai, JP;
Abstract
A data amplifying system in a semiconductor memory includes a current mirror circuit for receiving, via a data bus, an input signal corresponding to data read out from a memory cell via a pair of bit lines and for amplifying the input signal. The current mirror circuit operates on the basis of a power supply voltage. An amplitude limit circuit receives an operation voltage and limits the amplitude of the input signal on the data bus to a predetermined potential range on the basis of the operation voltage. A bit line reset potential generator generates a bit line reset potential and applies the bit line reset potential to the bit lines and the amplitude limit circuit. The bit line reset voltage is lower than the power supply line and serves as the operation voltage applied to the amplitude limit circuit.