Title:
ELECTRONIC APPARATUS
Document Type and Number:
Japanese Patent JP2018026063
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To prevent a malfunction and the like of a microcontroller.SOLUTION: An electronic apparatus (1) comprises: voltage conversion means for outputting a prescribed voltage after a power supply voltage exceeds a first threshold and then a first delay time elapses; reset means for, if the power supply voltage is equal to or less the second threshold, bringing an output port into a short-circuited state with respect to the ground, and after the power supply voltage exceeds a second threshold and then a second delay time elapses, bringing the output port into high impedance; a microcontroller including a power terminal receiving the prescribed voltage outputted by the voltage conversion means and a reset terminal connected to the output port; and a resistor (8) for pulling up the reset terminal to the power terminal, and for removing leakage voltage generated in the power terminal before the first delay time elapsed via a path other than the path for connecting the voltage conversion means to the power terminal.SELECTED DRAWING: Figure 1
Inventors:
OGAWA TAKUOMI
Application Number:
JP2016158902A
Publication Date:
February 15, 2018
Filing Date:
August 12, 2016
Export Citation:
Assignee:
CANON KK
International Classes:
G06F1/26; G06F15/78; H02J1/00; H03K17/22; H03K19/00; H03K19/003
Attorney, Agent or Firm:
Takuma Abe
Sogo Kuroiwa
Sogo Kuroiwa