Invention Grant
- Patent Title: Debounce circuit with noise immunity and glitch event tracking
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Application No.: US17029631Application Date: 2020-09-23
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Publication No.: US11177799B2Publication Date: 2021-11-16
- Inventor: Ankur Bal , Vikas Chelani
- Applicant: STMicroelectronics International N.V.
- Applicant Address: CH Geneva
- Assignee: STMicroelectronics International N.V.
- Current Assignee: STMicroelectronics International N.V.
- Current Assignee Address: CH Geneva
- Agency: Seed IP Law Group LLP
- Main IPC: H03K5/1252
- IPC: H03K5/1252 ; H03K19/003 ; H03K17/16

Abstract:
A debounce circuit and a method for masking or filtering a glitch from an input signal are provided. The debounce circuit includes a reset synchronizer circuit and a logic circuit. The reset synchronizer circuit receives the input signal, detects a glitch in the input signal and outputs one or more reset synchronizer output signals having a first reset synchronizer state indicating detection of the glitch. The logic circuit receives the one or more reset synchronizer output signals, determines that the one or more reset synchronizer output signals are in the first reset synchronizer state indicating detection of the glitch and in response to determining that the one or more reset synchronizer output signals are in the first reset synchronizer state, keeps an output signal of the debounce circuit in a present state of the output signal of the debounce circuit.
Public/Granted literature
- US20210119621A1 DEBOUNCE CIRCUIT WITH NOISE IMMUNITY AND GLITCH EVENT TRACKING Public/Granted day:2021-04-22
Information query
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