摘要:
PROBLEM TO BE SOLVED: To provide a delay circuit that can add the function of setting a detection delay time by an external capacitance without adding to the number of terminals of a semiconductor device, and a semiconductor device having the delay circuit.SOLUTION: An output control circuit 120 controls the level of an output signal from an output terminal OUT to a high level or a low level or controls the output terminal to a high impedance state. A delay time setting circuit 110 discharges a capacitance 1 in response to a control signal CntS from a logic circuit 130, and generates a delay time setting signal DLY on the basis of a voltage across the capacitance 1. The logic circuit 130 responds to a detection signal Det by controlling the output control circuit 120 to bring the output terminal OUT to the high impedance state and outputting the control signal CntS to the delay time setting circuit 110. The output control circuit 120 is further controlled to output the low level output signal in response to the delay time setting signal DLY.
摘要:
PROBLEM TO BE SOLVED: To provide a delay time generating circuit that not only significantly reduces the test time without using a high speed clock but also prevents an IC chip size from increasing, a semiconductor device for protecting a secondary battery using same, a battery pack and electronic device. SOLUTION: This invention relates to the delay time generating circuit wherein there is provided with a counter circuit 12 comprised of a plurality of cascade-connected flip-flop circuits FF1-FFn for counting pulse number of input clock signal CLK, and outputs of the flip-flop circuit on a final stage FFn or a predetermined stage the counter circuit 12 whose inversed signals are used as delay time signals (Delay). In the circuit, the delay time is generated by the output signals of the flip-flop circuit on the stages prior to the predetermined stage of the flip flop circuit, when testing electronic circuits. This results in reducing the delay time without using a special high speed clock. COPYRIGHT: (C)2008,JPO&INPIT
摘要:
PURPOSE:To simplify the circuit constitution and to reduce the cost, by giving a clock pulse applied to each analog switch at the input side synchronizingly and transmitting plural analog signals by means of a BBD with a delay. CONSTITUTION:L and R signals inputted from input terminals 2, 3 are transferred to a capacitor in the BBD1 alternately and stored. At the output side of the BBD1, the analog switches SW2, SW4 are set on and off alternately with the clock pulses CP3 and CP4, allowing to provide the L and R signals to low- pass filters LPF2, LPF4 alternately with a delay at output terminals 4 and 5. In this case, when the number of delay stages provided in the BBD1 is an odd number, the L signal is given to the output terminal 4 and the R signal is given to the output terminal 5 by impressing the clock pulse CP4 to the analog switch SW4.
摘要:
PROBLEM TO BE SOLVED: To provide an active signal generation circuit which generates internal active signals that satisfy active-cycle specifications.SOLUTION: An active signal generation circuit, to which first and second active signals (/CS1 and CS2) being pulse signals are input to generate an internal active signal, includes first delay elements (814, 817, and 820) and activates the internal active signal on the basis of the timing of leading edges of the first and second active signals. When the timing of a trailing edge of the first active signal is earlier than the timing of a trailing edge of the second active signal, the circuit deactivates the internal active signal on the basis of the timing of the trailing edge of the first active signal; and when the timing of the trailing edge of the first active signal is later than the timing of the trailing edge of the second active signal, the circuit deactivates the internal active signal after a predetermined delay time based on the delay time of the first delay elements has elapsed.
摘要:
PURPOSE:To obtain a long delay time with a simple circuit, by using a delay in power output of a photoelectric element to an optical input. CONSTITUTION:A solar battery 1 is used as the photoelectric element of the delay circuit and a pulse light 2 of a prescribed wavelength is made incident to the solar battery 1. An output current of the solar battery 1 is inputted to an operational amplifier 4 connecting a resistor 3 in parallel to generate an output voltage to a terminal 5. A bias voltage is applied to an input terminal 6 of the amplifier 4, and a delay time is given to the output voltage to the pulse light 2 by selecting the bias voltage. Further, the delay circuit is constituted by connecting an electromotive force element comprising a light emitting diode 41 and a photo diode 42 to the operational amplifier 4 connected with the resistor 3 in parallel. Moreover, the long delay time is obtained with a simple circuit by utilizing the delay in the power output against the optical input of the photoelectric element.