Patent ID: 8415993

Claim:
An electronic circuit for indicating whether a supply voltage has reached a first predetermined supply voltage level after power start-up or reset, the electronic circuit comprising: a flip-flop circuit, wherein the flip-flop circuit generates a power-on reset signal, and wherein the power-on reset signal is in a HI state when the supply voltage is at a voltage level that is greater than or equal to the first predetermined supply voltage level, and wherein the power-on reset signal is in a LO state when the supply voltage is at a voltage level that is less than the first predetermined supply voltage level; and an enable comparator circuit, wherein an enable comparator circuit output node of the enable comparator circuit outputs an enable signal, and wherein the enable comparator circuit output node is coupled to a reset node of the flip-flop circuit, and wherein the enable signal is in a LO state when the supply voltage is at a voltage level that is less than a second predetermined supply voltage level, and wherein the enable signal is in a HI state when the supply voltage is at a voltage level that is greater than or equal to the second predetermined supply voltage level, and wherein the second predetermined supply voltage level is less than the first predetermined supply voltage level.