摘要：The environment developmentfor deep sleep has been studied using analysis results of the big data about vital signsand parameters in thebedroom. The organic light emitting diode (OLED) illuminations of the bedroom are dimming using analysis results of the big data. Therefore, a low-power and compact design of dimming part is required for OLED illuminationsystem. In this paper, the optimized control block of the clock cut-off circuit wasdesigned using De Morgan’s laws with adiabatic dynamic CMOS logic(ADCL)digital 3-bit pulse width modulation (PWM). The designed clock cut-off circuit pauses the D-flipflops (D-ffs)after cutting off the clock at both 0% and 100 % pulse width of PWM outputfor dimming. As a result, 10 transistors of the miniaturized control block were reducedand layout area of the optimized control block is 2,198.0μm2using Rohm 0.18μm standard CMOS model.The operation of control blockof clock cut-off circuitwith ADCL 3-bit digital PWMis confirmed by post-simulationof hspice.
关键词：clock cut - off circuit; optimization ; adiabatic dynamic CMOS logic (ADCL) ; digital PWM; OLED illuminations system ; internet of things (IoT) service
