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Reference.org
Low-voltage detect
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<p>A low-voltage detect (LVD) is a <a href="/facts/Microcontroller/MKrnAhnm">microcontroller</a> or <a href="/facts/Microprocessor/Fx9CaQht">microprocessor</a> <a href="/facts/Peripheral/3lEBPE14">peripheral</a> that generates a <a href="/facts/Reset_(computing)/0EsmQ1N3">reset</a> signal when the <a href="/facts/Vcc_supply_voltage/moPAAjnl">Vcc supply voltage</a> falls below Vref. Sometimes is combined with <a href="/facts/Power-on_reset/B0Lh220y">power-on reset</a> (POR) and then it is called POR-LVD. </p>