公开(公告)号：US20160240229A1

公开(公告)日：2016-08-18

申请号：US15029170

申请日：2014-10-08

Applicant: DENSO CORPORATION

Inventor： Takaomi HASEGAWA ,  Satoshi WATANABE ,  Hiroki HAYASHI ,  Hiroki NAWA

IPC: G11C5/14 ,  H02J7/16

CPC classification number: G11C5/147 ,  G06F1/305 ,  G06F12/16 ,  H02J1/00 ,  H02J7/00 ,  H02J7/16

Abstract: A data storage control device controls a memory card which, including a non-volatile rewritable memory, operates using an external power supply. A DC/DC converter generates, by having a power supply of a +B voltage, a card operating voltage for operating the memory card. When delayed ACC is completed after an accessory power supply of a vehicle is turned off, a main microcomputer, a shutdown signal control unit, and a transistor set a shutdown terminal of the DC/DC converter to a low level by setting a main control signal input terminal to a high level and, thereby, stops operation of the DC/DC converter. This inhibits the occurrence of a case in which, after the accessory power supply of the vehicle is turned off, the circuit supplying power to the memory card affects other devices mounted in the vehicle.

Abstract translation: 数据存储控制装置控制包括非易失性可重写存储器在外部电源中进行操作的存储卡。 DC / DC转换器通过具有+ B电压的电源产生用于操作存储卡的卡工作电压。 当延迟ACC在车辆的辅助电源关闭之后完成时，主微型计算机，关闭信号控制单元和晶体管通过设置主控制信号将DC / DC转换器的关闭端子设置为低电平 输入端子为高电平，从而停止DC / DC转换器的工作。 因此，能够防止车辆的辅助电源关闭后向存储卡供给电力的电路影响安装在车辆中的其他装置。