| 摘要 |
<p>PURPOSE:To facilitate the change of contents of a control logic without replacing the PROMs related to the control logic by slowing down the voltage dropping speed immediately after a turn-off action for a power supply circuit which energizes the working of each component part. CONSTITUTION:A power supply ON/OFF detecting circuit 04 detects the workable levels of all electronic circuits of a microprocessor 01, etc., after application of the system power supply and transmits an interruption signal to the microprocessor 01. Then all electronic circuits of the microprocessor 01, etc., are started. When the power supply is cut, an interruption signal is produced to the microprocessor 01 before the actions of the electronic circuits of the microprocessor 01, etc., go to unstable. Then a command is produced so that the contents of a read control memory 06 are transferred to a nonvolatile memory 07.</p> |
