Abstract: A control circuit 10 includes an internal clock generating portion (12), which starts generating an internal clock signal (LCLK) required by a control portion (11) to perform action when a specific signal pattern appears in a trigger signal, continually generates the internal clock signal (LCLK) at least before the control portion (11) completes predetermined processing, and then stops generating the internal clock signal (LCLK); and the control portion (11), which uses the internal clock signal (LCLK) to perform the predetermined processing.

Abstract: A data holding device according to the present invention includes a loop structure portion LOOP for holding data using a plurality of logic gates (NAND3 and NAND4) connected in a loop, a nonvolatile storage portion (NVM) for storing in a nonvolatile manner the data held in the loop structure portion (LOOP) by using the hysteresis characteristics of ferroelectric elements, a circuit separating portion (SEP) for electrically separating the loop structure portion (LOOP) and the nonvolatile storage portion (NVM), and a set/reset controller (SRC) for generating a set signal (SNL) and reset signal (RNL) based on data stored in the nonvolatile storage portion (NVM), wherein the plurality of logic gates are each set and reset to an arbitrary output logic level in accordance with the set signal (SNL) and reset signal (RNL).

Abstract: A control circuit 10 includes an internal clock generating portion (12), which starts generating an internal clock signal (LCLK) required by a control portion (11) to perform action when a specific signal pattern appears in a trigger signal, continually generates the internal clock signal (LCLK) at least before the control portion (11) completes predetermined processing, and then stops generating the internal clock signal (LCLK); and the control portion (11), which uses the internal clock signal (LCLK) to perform the predetermined processing.

Abstract: A data holding device according to the present invention includes a loop structure portion LOOP for holding data using a plurality of logic gates (NAND3 and NAND4) connected in a loop, a nonvolatile storage portion (NVM) for storing in a nonvolatile manner the data held in the loop structure portion (LOOP) by using the hysteresis characteristics of ferroelectric elements, a circuit separating portion (SEP) for electrically separating the loop structure portion (LOOP) and the nonvolatile storage portion (NVM), and a set/reset controller (SRC) for generating a set signal (SNL) and reset signal (RNL) based on data stored in the nonvolatile storage portion (NVM), wherein the plurality of logic gates are each set and reset to an arbitrary output logic level in accordance with the set signal (SNL) and reset signal (RNL).