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    • 46. 发明申请
    • SEMICONDUCTOR DEVICE AND METHOD FOR DRIVING THE SAME
    • 半导体器件及其驱动方法
    • US20140310533A1
    • 2014-10-16
    • US14249903
    • 2014-04-10
    • SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    • Yutaka ShionoiriTomoaki AtsumiMasaaki Hiroki
    • G06F21/72
    • G06F3/06G06F1/00G06F1/32G06F1/3287G06F3/0619G06F12/1408G06F21/81G11C11/005G11C14/00G11C14/0081H04L9/00
    • An object is to solve all of the following problems caused when a volatile register and a non-volatile register are used as registers in a processor: degradation of the integrity of data stored in the non-volatile register; loss of data security due to the processor and a non-volatile memory device that are provided apart from each other; and slow data processing speed due to wiring delay or the like caused by these devices provided apart from each other. When data maintained in the volatile register is stored in the non-volatile register before supply of power supply voltage is stopped, the data is encrypted by an encryption circuit and stored in a non-volatile memory device that is provided separately from the processor. Then, the data stored in the non-volatile register is compared with the compressed and encrypted data stored in the non-volatile memory device.
    • 一个目的是解决在将易失性寄存器和非易失性寄存器用作处理器中的寄存器时引起的所有以下问题:降低存储在非易失性寄存器中的数据的完整性; 由于处理器和彼此分开提供的非易失性存储器件而导致的数据安全性的损失; 并且由于由彼此分开提供的这些装置引起的布线延迟等导致的数据处理速度慢。 当在停止提供电源电压之前,将保持在易失性寄存器中的数据存储在非易失性寄存器中时,数据由加密电路加密并存储在与处理器分开提供的非易失性存储器件中。 然后,将存储在非易失性寄存器中的数据与存储在非易失性存储器件中的压缩和加密数据进行比较。