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    • 3. 发明授权
    • Semiconductor memory card enabling continuation of processing when processing execution is interrupted due to interruption of voltage supply
    • 能够在处理执行时继续处理的半导体存储卡由于电压供应中断而中断
    • US07680975B2
    • 2010-03-16
    • US11662184
    • 2005-09-13
    • Satoshi Tanigawa
    • Satoshi Tanigawa
    • G06F1/30G06F12/16G11C11/22
    • G06K19/07G06K19/0707G06K19/0712
    • The present invention is to provide a semiconductor memory card which enables continuation of processing, even when processing execution is interrupted due to interruption of voltage supply. The semiconductor memory card according to the present invention is a semiconductor memory card which can execute a program, which includes: an FeRAM which stores information; a register which stores information regarding the program being executed; a voltage detection unit which detects change in supply voltage to the semiconductor memory card; a save unit which associates register information stored in the register with additional information for specifying the program, and saves the register information and the additional information to the FeRAM in the case where the detection unit detects a predetermined status of voltage decrease; and a return unit which returns the register information to the register in the case where the detection unit detects a predetermined status of voltage increase and when the additional information stored in the FeRAM satisfies a predetermined condition.
    • 本发明是提供一种能够继续处理的半导体存储卡,即使当由于电压供应中断而处理执行中断时。 根据本发明的半导体存储卡是可以执行程序的半导体存储卡,其包括:存储信息的FeRAM; 存储关于正在执行的程序的信息的寄存器; 电压检测单元,其检测对所述半导体存储卡的电源电压的变化; 存储单元,其将存储在所述寄存器中的寄存器信息与用于指定所述程序的附加信息相关联,并且在所述检测单元检测到预定电压降低状态的情况下将所述寄存器信息和所述附加信息保存到所述FeRAM; 以及返回单元,其在检测单元检测到电压增加的预定状态以及存储在FeRAM中的附加信息满足预定条件的情况下将寄存器信息返回给寄存器。