Patent ID: 9280925
Filing Date: 2016-03-08
CPC Classification: G06F,G09G,H02J,H03K

Claim Text:
1. A device with low current power source, comprising: a low current power source, for providing a power voltage; a low voltage reset circuit, coupled to the low current power source, receiving the power voltage, for converting a low voltage reset signal from a first logic voltage to a second logic voltage when the power voltage rises to a threshold voltage; a first circuit module, comprising an enable terminal, wherein the first circuit module starts operating when a first enable signal received by the enable terminal of the first circuit module is enabled; a second circuit module, comprising an enable terminal, wherein the second circuit module starts operating when a second enable signal received by the enable terminal of the second circuit module is enabled; and a sequential enabling circuit, coupled to the first circuit module and the second circuit module, wherein the sequential enabling circuit enables the first enable signal when the low voltage reset signal changes from the first logic voltage to the second logic voltage after a first preset period, and the sequential enabling circuit enables the second enable signal when the first enable signal is enabled after a second preset period.