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:
Apr. 20, 1976
Filed:
May. 03, 1974
Applicant:
Inventor:
Everett Eberhard, Tempe, AZ (US);
Assignee:
Motorola, Inc., Chicago, IL (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K / ;
U.S. Cl.
CPC ...
307238 ; 307228 ; 328 57 ; 307251 ; 307255 ; 307262 ; 307264 ; 307279 ;
Abstract
Apparatus and system for controlling the gate threshold settings of MNOS memory devices is disclosed. Positive or negative pulses depending on turn-on or turn-off of relatively large amplitude and relatively low frequency are applied to the gate of the MNOS device whose threshold is to be set and to whose gate a bias value equal to the desired setting has been applied. A feed back circuit, in response to the change in current conduction condition of the test MNOS device caused by the application of the pulses, reduces the magnitude of the pulses to a low value as the gate threshold value reaches the desired set value.