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    • 9. 发明申请
    • Semiconductor device and method for controlling flip-flop
    • 用于控制触发器的半导体器件和方法
    • US20110234267A1
    • 2011-09-29
    • US13064351
    • 2011-03-21
    • Yasuhiro Oda
    • Yasuhiro Oda
    • H03L7/00
    • H03K3/0375
    • A semiconductor device according to one aspect of the present invention includes: a flip-flop; a clock control circuit that controls a clock signal supplied to the flip-flop; and a controller that supplies a data retention signal to the flip-flop and controls the clock control circuit. When the flip-flop is driven by a negative edge of the clock signal and retains data when the clock signal is at a high level, the controller controls the clock control circuit so as to supply a high-level clock signal to the flip-flop after the input clock signal is fixed and before the flip-flop retains data. This prevents the occurrence of unintended latching of data when the flip-flop having a retention function retains data.
    • 根据本发明的一个方面的半导体器件包括:触发器; 控制提供给触发器的时钟信号的时钟控制电路; 以及向触发器提供数据保持信号并控制时钟控制电路的控制器。 当触发器由时钟信号的负沿驱动并且当时钟信号处于高电平时保持数据,控制器控制时钟控制电路,以向触发器提供高电平时钟信号 在输入时钟信号固定之后,触发器保留数据之前。 这防止当具有保留功能的触发器保留数据时发生数据的意外锁存。