Latch circuit device and port sampling system
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United States of America Patent
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Apr 30, 2024
Grant Date -
Feb 23, 2023
app pub date -
Jan 24, 2022
filing date -
Jan 24, 2022
priority date (Note) -
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status (Latency Note)
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Abstract
A latch circuit device includes: a latch circuit configured to latch an input signal to a microcomputer; a detection circuit configured to detect that the input signal is input to the latch circuit during a sleep period in which the microcomputer is in a sleep state; a wake-up circuit configured to transmit a wake-up signal to the microcomputer when an input of the input signal is detected during the sleep period; a sampling circuit configured to read the input signal from the latch circuit; a transmission circuit configured to transmit the input signal read by the sampling circuit to the microcomputer returned from the sleep state based on the wake-up signal; and a release circuit configured to release a latch state of the latch circuit after the input signal is read.
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