ELECTRONIC CLOCK, ELCTRONIC APPARATUS AND STARTING METHOD

摘要

An oscillator (601) capable of oscillation-starting at low voltage is used, an oscillation signal (S1) of this oscillator (601) is amplified via a waveform shaping unit (603) for feeding to a boosting control unit (105). Immediately after starting the oscillator (601), a boosting unit (103) is kept boosting-operated by a boosting clock (Sa) having the same frequency as the oscillating frequency of the oscillation signal (S1). This allows the entire electronic clock (100) to self-start despite a low generation voltage. In addition, since the oscillator (601) is so constructed as to always provide a constant operating current, a power generation unit (101) such as one-stage-construction solar cell low in open voltage can be provided.