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:
Sep. 26, 2006
Filed:
Dec. 23, 2003
Yoichi Endo, Chiba, JP;
Yoichi Endo, Chiba, JP;
Seiko Instruments Inc., , JP;
Abstract
A semiconductor device for a keyless entry transmitter has a command data circuit connected to communication terminals for communication with a microcomputer. A memory circuit is connected to the command data circuit for storing rolling code data. A timer period setting register is connected to the command data circuit for storing timer period setting data. A timer circuit is connected to the command data circuit, the timer period setting register and a clock terminal for outputting an enable signal for placing the microcomputer into an intermittent operation state upon receiving an output signal of the command data circuit, an output signal of the timer period setting register, and a clock signal of the clock terminal. A regulator output voltage setting register is connected to the command data circuit for outputting a signal in response to an output signal of the command data circuit. A regulator circuit is connected to the regulator output voltage setting register for outputting an output voltage upon receiving an input voltage and the output signal of the regulator output voltage setting register.