Signal generation circuit, signal generation method and chip
A signal generation circuit and circuit technology, applied in electrical components, electronic switches, pulse technology, etc., can solve the problems of large chip size and unfavorable chip miniaturization, and achieve the effect of reducing volume and facilitating miniaturization
Pending Publication Date: 2021-07-09
江苏银河芯微电子有限公司
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Problems solved by technology
[0003] However, the existing start-up circuit and power-on reset circuit make the chip larger, which is not conducive to the miniaturization of the chip
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[0026] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. It should be understood, however, that these descriptions are exemplary only, and are not intended to limit the scope of the present disclosure. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concept of the present disclosure.
[0027] Various structural schematic diagrams according to embodiments of the present disclosure are shown in the accompanying drawings. The figures are not drawn to scale, with certain details exaggerated and possibly omitted for clarity of presentation. The shapes of the various regions and layers shown in the figure, as well as their relative sizes and positional relationships are only exemplary, and may deviate due to manufacturing tolerances or technical limitations in practice, and those skilled in the art will Regions / layers with different shapes, s...
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The invention discloses a signal generation circuit, a signal generation method and a chip, relates to the technical field of integrated circuits, and is used for generating a first reset signal and a second reset signal while starting a reference power supply sub-circuit so as to reduce the size of the chip comprising the signal generation circuit and facilitate miniaturization of the chip. The signal generating circuit comprises a reference current source sub-circuit, a starting sub-circuit and a power-on reset output sub-circuit. The power-on reset output sub-circuit comprises a charging unit and a first delay unit. The first delay unit is used for outputting a first reset signal when the signal generating circuit is powered on and controlling the starting sub-circuit to start the reference current source sub-circuit according to the first reset signal. The reference current source sub-circuit is used for controlling the starting sub-circuit to charge the charging unit. The first delay unit is used for outputting a second reset signal when the charging unit is in the charging state. The chip comprises the signal generation circuit.
Description
technical field [0001] The invention relates to the technical field of integrated circuits, in particular to a signal generating circuit, a signal generating method and a chip. Background technique [0002] The start-up circuit and the power-on reset circuit are two important analog circuit modules in the chip. Wherein, the start-up circuit is used to provide a start-up signal for the reference current source circuit included in the chip when the chip is powered on. The power-on reset circuit is used to provide a power-on reset signal to the module to be initialized in the chip, so as to restore the module to be initialized to a known state when the chip is powered on. [0003] However, the existing start-up circuit and power-on reset circuit make the chip larger, which is not conducive to the miniaturization of the chip. Contents of the invention [0004] The object of the present invention is to provide a signal generating circuit, a signal generating method and a chip...
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IPC IPC(8): H03K17/22
CPCH03K17/22
Inventor 姜宇郭桂良
Owner 江苏银河芯微电子有限公司