Reset signal control apparatus for protecting a microcomputer

A reset signal control apparatus that outputs a reset signal to a microcomputer in order to restrict a malfunction of the microcomputer when the microcomputer is started, the microcomputer being connected with an oscillation circuit that provides a clock signal to the microcomputer and the reset signal control apparatus outputting the reset signal to the microcomputer at least until the clock signal based on which the microcomputer operates is stabilized,

• the reset signal control apparatus comprising:
• a power supply section supplying a power to the oscillation circuit and the microcomputer;
• a measuring section measuring a consumption current of the oscillation circuit and the microcomputer while the power supply section supplies the power to the oscillation circuit and the microcomputer;
• and
• an output ending section, when the measuring section determines that the consumption current becomes equal to or higher than a predetermined threshold value, determining that the clock signal provided by the oscillation circuit is stabilized and ending an output of the reset signal to the microcomputer, wherein
• the output ending section determines that the clock signal is stabilized and ends the output of the reset signal when the measuring section determines that the consumption current maintains equal to or higher than the predetermined threshold value and a change amount of the consumption current stays within a predetermined allowable range for a predetermined period.