公开(公告)号：US12182045B2

公开(公告)日：2024-12-31

申请号：US18152582

申请日：2023-01-10

Applicant: RENESAS ELECTRONICS CORPORATION

Inventor： Kazuaki Terashima ,  Atsushi Nakamura ,  Rajesh Ghimire

IPC: G06F13/28 ,  G06F7/544 ,  G06F13/16

Abstract: A semiconductor device capable of preventing a sharp variation in current consumption in neural network processing is provided. A dummy circuit outputs dummy data to at least one or more of n number of MAC circuits and causes the at least one or more of n number of MAC circuits to perform a dummy calculation and to output dummy output data. An output-side DMA controller transfers pieces of normal output data from the n number of MAC circuits to a memory, by use of n number of channels, respectively, and does not transfer the dummy output data to the memory. In this semiconductor device, the at least one or more of n number of MAC circuits perform the dummy calculation in a period from a timing at which the output-side DMA controller ends data transfer to the memory to a timing at which the input-side DMA controller starts data transfer from the memory.