| 摘要 |
<p>PURPOSE:To prevent a runaway due to unstableness of a source voltage at system startup time due to switch depression by outputting a switch signal only when a battery has a remaining capacity after chattering removal at switch depression time, and to make the power consumption low by eliminating a chattering removing circuit. CONSTITUTION:This battery controller consists of a chattering removal part 5 which is actuated by inputting a signal by interruption when a switch 10 is depressed and outputs a switch signal only when the signal is ON a certain time later, a battery remaining capacity detection part 6 which detects the voltage of the battery 1 in response to the outputted switch signal and detects the remaining capacity of the battery, and a control part 8 which supplies electric power from the battery 1 to a CPU 3 on the basis of the switch signal and sends the switch signal to the CPU 3 to actuate it.</p> |
