| 摘要 |
PURPOSE:To reduce the size and capacity of a power supply by automatically deciding whether the power supply hits or turns on, and at the time of generating instantaneous disconnection, compensating the power of a memory and continuously executing processing executed before the generation of instantaneous disconnection. CONSTITUTION:The title power supply hit processor is constituted of a power compensating circuit 11 and volatile memories 121, 122 in respective terminals controlled by a CPU. When power is normally supplied from a power supply VPP, the circuit 11 is charged with power and power is supplied to the memories 121, 122 for a fixed period after the generation of a hit. When no destruction of power supply disconnection checking data is decided at the time of generating the hit, processing executed before the generation of the hit is continuously executed by using storage data. When power compensation is not functioned, data stored in the memories 121, 122 can not be held and data are destructed, the contents stored in the memories 121, 122 are initialized while charging the circuit 11 with power after turning on the power supply on the basis of the checked decision. |
