Patent ID: 8680710
Filing Date: 2014-03-25
Classification: G06F

Abstract:
1. Supply voltage sequencing circuitry comprising: (a) first circuitry for comparing an upper target threshold with a first supply voltage; (b) second circuitry for comparing a lower target threshold with the first supply voltage; (c) first logic circuitry for producing an active level of a first output signal on a first output in response to an output of the first circuitry if the first supply voltage exceeds the upper target threshold while a first control signal on a first control input is at an active level, the first logic circuitry also being operative to produce an inactive level of the first output signal in response to an inactive level of the first control signal, the first logic circuitry also being operative to latch a logic level representative of the first output signal when a second control signal on a second control input is at an inactive level; and (d) second logic circuitry for producing an inactive level of a second output signal on a second output in response to the output of the second circuitry if the first supply voltage is less than the lower target threshold during the inactive level of the second control signal, the second logic circuitry also being operative to produce an active level of the second output signal in response to the active level of the second control signal.