Power-on reset circuit
AssigneeRohm Co., Ltd.
InventorMasanobu Tsuji
Life of this patent
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Abstract
A power-on reset circuit supplies a reset pulse to a sequential circuit to be initialized. A latch circuit includes a first inversion circuit and a second inversion circuit structured to invert and amplify a signal input thereto, with an output node of the first inversion circuit connected to an input node of the second inversion circuit, and with an output node of the second inversion circuit connected to an input node of the first inversion circuit. A decision circuit receives the first signal from the output node of the first inversion circuit and the second signal from the output node of the second inversion circuit and generates a reset pulse on the basis of the first signal and the second signal.
Claims20
A power-on reset circuit structured to supply a reset pulse to a sequential circuit to be initialized, the power-on reset circuit comprising:
- a latch circuit including a first inversion circuit and a second inversion circuit that invert and amplify a signal input thereto, wherein the first inversion circuit has an output node connected to an input node of the second inversion circuit, and the second inversion circuit has an output node connected to an input node of the first inversion circuit;
- and
- a decision circuit structured to receive a first signal from the output node of the first inversion circuit and a second signal from the output node of the second inversion circuit, and to generate the reset pulse according to the first signal and the second signal.
Dependencies are inferred from the claim text.