Flip-flop

About: Flip-flop is a research topic. Over the lifetime, 2543 publications have been published within this topic receiving 20692 citations.

J-k master-slave flip-flop

Abstract: Disclosed is a J-K master-slave flip-flop system having a simplified gating system and in which no clock pulse connections are required for the transfer transistors. Clock pulses are fed to input gates. Additional clocks may be added by tying the input gates to clock lines. The clock pulse are ANDed together at the input gate so that the J-K master-slave flip-flop system is suitable for use in large arrays.

Edge-triggered d-flip-flop circuit

Abstract: The circuit forms an edge-triggered D-Flip-Flop with a master/slave configuration. The master circuit has only one master switch controlled by a clock signal and followed by a first inverter. The slave circuit has a slave switch followed by a second inverter and a regenerative feedback-loop. The master and slave switches can easily be realized using n-MOS-transistors instead of transmission gates, thus achieving small chip area. The Flip-Flop can easily be amended by set and reset devices and it is suitable for mass applications such as memory and microprocessor chips.

Dynamic flip-flop with static reset

Abstract: A D-type flip-flop (10) receives the D input on an input line (14) of a transfer gate (12) that also receives the flip-flop clock signal. A state gate (20) forwards the transmission-gate output when the signals on two of its input lines (22) and (24) remain true. To reset the flip-flop asynchronously, a false signal is imposed on one of the input lines (22) of the state gate (20). By coordination of a second clock signal, which is applied to a second transmission gate (34), with the reset signal, the reset condition is held until the next clock pulse on the first transmission gate (12). The flip-flop ordinarily operates as a dynamic circuit, but, in order to maintain the reset condition in circumstances in which the reset state is to be maintained for an extended period of time, a latch gate (26) is enabled by a true signal on one of its input lines (32) to feed the reset output of the state gate 20 to one of its input terminals (24 ) so as to latch the flip-flop in the reset state.

Monitoring device for integrated driver amplifiers

Abstract: A monitoring device in integrated driver amplifiers is controlled by digital signals. This monitoring device comprises error detector circuits which generate an error signal in the event of an excessive temperature, in the event of an overcurrent, in the event of an interruption or in the event of a short circuit in the load circuit. The input of the driver amplifier is connected to the output of a D-type flip flop (13) which exhibits a data input (D) and a control input (C) which can be connected to a digital control system. Between the data input (D) and a potential which corresponds to the logical _0_, a circuit (22, 23) is provided by means of which the data input (D) is dropped to the _0_ potential during the intervals between the operating signals when an error signal is present.

Scan flip-flop circuit with reduced power consumption

Abstract: A scan flip-flop circuit and related scan chain are disclosed. The scan flip flop comprises in one embodiment an input stage receiving, selecting between, and outputting either a normal logic signal or a scan logic signal in accordance with an operation mode for the scan flip-flop circuit. The scan flip-flop further comprises a flip-flop receiving either the normal logic signal or the scan logic signal selected by the input stage, and outputting in accordance with a clock signal a first logic signal from a first flip-flop output terminal and an output stage receiving the first logic signal and comprising first and second output terminals, such that a signal output from the first output terminal is identical to the normal logic signal received in the input stage, and a signal output from the second output terminal maintains a high logic value when the scan flip-flop circuit operates in a normal mode and a signal output from the first and second output terminals are identical to the scan logic signal received in the input stage when the scan flip-flop circuit operates in a scan mode.