Power control apparatus, electronic apparatus, and portable communications terminal

摘要

A voltage detector (20) detects a start of power supply from a battery (10). When the voltage detector (20) detects the start of power supply, a counter (22) starts counting the clocks of an RTC (21). A first comparator (26) compares a count value stored in a first non-volatile memory (23) and the count value of the counter (22) and outputs a CPU reset release signal when these count values match with each other. A second comparator (27) compares a count value N stored in a second non-volatile memory (24) and the count value of the counter (22) and, when these count values coincide with each other, performs power-on operation of a regulator (30) which outputs I/O power for the CPU (12). Accordingly, timing of CPU reset release and timing of regulator power-on can be readily modified without aluminum modification.