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. 23, 2019
Filed:
Mar. 07, 2018
Renesas Electronics Corporation, Tokyo, JP;
Hiroshi Ueki, Tokyo, JP;
Eiji Koeta, Tokyo, JP;
RENESAS ELECTRONICS CORPORATION, Tokyo, JP;
Abstract
An object of the present invention is to provide a semiconductor device and a control method thereof that can suppress a circuit scale from being increased while maintaining a high interruption response performance. According to an embodiment, a semiconductor device includes a flash memory in which N interruption subroutine programs are stored, an interruption control circuit that detects occurrence of an interruption, counters that determine the respective occurrence probabilities of N interruption factors on the basis of the detection result of the interruption control circuit, an interruption buffer memory in which the M (M<N) interruption subroutine programs corresponding to the top M interruption factors determined to be high in the occurrence probability among the N interruption factors are stored, and a CPU that reads, in the case where an interruption of one of the M interruption factors has occurred, the interruption subroutine program corresponding to the interruption from the interruption buffer memory to execute the same.