Panasonic DP-3000 Technical Manual page 28

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2. Reset Circuit

This circuit consists of IC301 (PST575E) and peripheral circuit. This circuit always watches 5V. Output

of this circuit (nRST) is set that if 5V falls below setting level (3.9V). When the 5V rises above voltage,

the reset signal is canceled after a delay of approximately 20 ms. After cancelling, software is started

Reset Signal Timing Chart

Reset Circuit