摘要:
A power efficient flip-flop includes a power switch regulating power supplied to a high speed latch in the flip-flop. When the power switch is activated, causing the high speed latch to receive power, the high speed latch captures data received by the flip-flop. The captured data is propagated by the high speed latch to the output of the flip-flop. Simultaneously, the high speed latch transmits the data to a low leakage latch connected to the high speed latch. Then, power is removed from the high speed latch, and the data retained in the low leakage static latch is now released to the output of the flip-flop. The power efficient flip-flop minimizes leakage current generated by the high speed latch by removing a path to ground when power is not provided to the high speed latch. A decoupling device is connected to the power switch to substantially eliminate a coupling effect.
摘要:
A single event upset (SEU) hardened latch circuit utilizing two cross-coupled inverters in which the voter output circuitry is fed back to the output node of the latch circuit.
摘要:
A semiconductor integrated circuit so configured to stop the supplying of an electric power to a logic circuit in a standby mode, thereby to realize a low power consumption, includes a latch circuit characterized in that as the control signal a clock signal is supplied in the active mode, and a signal for creating an information hold condition is supplied in the standby mode, and in that MOSFETs applied with a control signal include a first conductivity type MOSFET having a high threshold and a second conductivity type MOSFET having a low threshold, a voltage amplitude of the control signal being larger than a power supply voltage. The semiconductor integrated circuit can be realized in that the high speed operation in the active mode and the low power consumption in the standby mode are compatible with each other, and it is sufficient if a power switch for the logic circuit is inserted at only either of the high level power supply voltage line side and the low level power supply voltage line side. In addition, the control signals are very few, and a fine timing control for changing over the mode is no longer required.
摘要:
An integrated circuit and method utilizes a differential input receiver having a first input that receives an input signal. A reference voltage adjustment circuit produces a variable reference signal for the second input of a differential input receiver. A feedback path is provided from the output of the differential input receiver to an input of the reference voltage adjustment circuit. The reference voltage adjustment circuit dynamically varies the variable reference voltage signal to facilitate hysteresis. The variable reference voltage signal is lowered in the case of a high input signal, and raised in the case of a low input signal.
摘要:
A high-speed, current-driven latch is provided. The latch conducts a current and includes an output, a SET circuit and a RESET circuit. The output is variable between a first state and a second state. The SET circuit conducts the current present in the latch at the first state such that the SET circuit is maintained close to a level required to change the output of the transistor from the first to the second level, and the RESET circuit conducts the current at the second level such that the RESET circuit is close to a level required to change the output of the transistor from the second level to the first level.
摘要:
A body voltage controlled semiconductor integrated circuit which can solve a problem of a conventional CMOS inverter in that it cannot operate at a supply voltage beyond the built-in voltage of the CMOS transistors if their body electrodes are each connected to their own gate electrodes rather than to their source electrodes to quicken the operation of the CMOS inverter. A voltage divider circuit is provided which conducts during the operation of the CMOS transistors of the inverter so that the body voltages of the PMOS transistor or the NMOS transistor of the inverter is varied in the direction of reducing their threshold voltages. By controlling the size of electrodes and the voltages applied to the body electrodes of transistors constituting the voltage divider circuit, it becomes possible to operate the CMOS inverter at the supply voltage beyond the built-in voltage.
摘要:
A high-gain comparator has a built-in hysteresis offset voltage generation feature. The comparator is characterized as having several elements, including a differential amplifier pair that is provided with first and second input voltages, an offset voltage element that creates an offset voltage between the first and second elements of the differential amplifier pair, an output generation element operably coupled to the differential amplifier pair that generates an output voltage of the comparator which is indicative of a voltage difference between the first and second input voltages, and a control element operably coupled to the output signal that controllably adjusts the offset voltage from a first state to a second state in accordance with the output signal to create a hysteresis condition of the comparator.