Power on Reset - GLOBALFOUNDRIES 12LP+

Analog Bits’ Power-On Reset (POR) and Over Current Detection (OCD) macro comprehensively addresses typical SOC start-up power supply monitoring needs and over current detection capability, in a fully integrated easy-to-use macro. The POR includes an internal bandgap style voltage reference circuit which is used as a reference to compare the power supplies against. The POR further includes its own timebase reference circuit, so requires no clock or other synchronizing signal to work correctly. Only when both IO and Core power supplies have both exceeded a user-selected voltage level for a user-selected time, will the outputs signal that power is good. The OCD feature is a Voltage Comparator for Over Current Detection application. It has an integrated low-power Bandgap reference and programmable hysteresis levels. The OCD outputs will flag an output High in response to detecting an external voltage higher than the internal reference, plus a selected hysteresis amount.

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