A kind of oscillator circuit and flash chip

Abstract

The invention discloses an oscillator circuit and a flash chip. The structure of the oscillator circuit is simple to connect. When the enable signal is 0, both the first mos tube and the second mos tube are turned on, and the oscillator clock pulse always keeps low power However, the current of the oscillator is not turned off. Therefore, when the enable signal returns to a high level again, the entire oscillator circuit can quickly oscillate to a stable state; while reducing the area of ​​the flash chip as much as possible, it can meet the requirements of the oscillator circuit. Fast oscillation stabilization requirement.

Description

technical field

[0001] The invention relates to the technical field of semiconductor integrated circuits, in particular to an oscillator circuit and a flash chip. Background technique

[0002] The more common way to shut down the oscillator when it is not in use is to turn off the current directly. But when the oscillator is re-enabled, since the current has to flow through the oscillator again, there is a settling process for the oscillator to re-oscillate to stability, such as figure 1 As shown, the frequency of the oscillator during this time is not what we need.

[0003] A general oscillator circuit includes an odd number of oscillators, and in order to solve the above problems, an nmos tube or a pmos tube is generally connected between two oscillators connected in sequence to keep the oscillator clock pulse at a low level all the time, but the oscillator The current of the oscillator is not turned off, and when the enable signal returns to a high level again, the enti...

Examples

Embodiment Construction

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all of them. The components of the embodiments of the application generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of the present application.

[0021] It should ...

technical field

[0001] The invention relates to the technical field of semiconductor integrated circuits, in particular to an oscillator circuit and a flash chip. Background technique

[0002] The more common way to shut down the oscillator when it is not in use is to turn off the current directly. But when the oscillator is re-enabled, since the current has to flow through the oscillator again, there is a settling process for the oscillator to re-oscillate to stability, such as figure 1 As shown, the frequency of the oscillator during this time is not what we need.

[0003] A general oscillator circuit includes an odd number of oscillators, and in order to solve the above problems, an nmos tube or a pmos tube is generally connected between two oscillators connected in sequence to keep the oscillator clock pulse at a low level all the time, but the oscillator The current of the oscillator is not turned off, and when the enable signal returns to a high level again, the enti...

Examples

Embodiment Construction

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all of them. The components of the embodiments of the application generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of the present application.

[0021] It should ...

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