公开(公告)号：US20200019341A1

公开(公告)日：2020-01-16

申请号：US16450294

申请日：2019-06-24

Applicant: RENESAS ELECTRONICS CORPORATION

Inventor： Takashi KURAFUJI ,  Satoshi YAMAMOTO

IPC: G06F3/06

Abstract: A master issues the valid data is specified when the data update processing is interrupted.The control unit 3 stores in the storage unit 2 the second update status flag 8_2, which indicates the update status of the first update status flag 8_1 and the second data 6_2, which indicate the update status of the first data 6_1, and the third update status flag 8_3, which indicates the update status of the valid indication flag 7. When the determination based on the valid instruction flag 7 is impossible, the usage data determination unit 4 determines which of the first data 6_1 and the second data 6_2 is valid based on the values of the first update status flag 8_1, the second update status flag 8_2, and the third update status flag 8_3.