作者: Okawa Toru
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摘要: PROBLEM TO BE SOLVED: To securely prevent a power-on reset circuit from being initialized undesirably. SOLUTION: For example, two voltage level detecting circuits 11 and 12 having different detection levels are prepared; the signal OUT of higher is connected to input latch 21 lower inputted set input. The output used as PONRST. Consequently, can be continuously until high reached when power source turned on, not which low no- operation-hindrance extent drops.