| 摘要 |
A discharge order control circuit includes a pool circuit, a delay circuit and a discharge unit to control a discharge order of internal power supplies. The pool circuit stores electric charges provided from a potential of an external power supply. The delay circuit operates on the electric charges stored in the pool circuit and delays a discharge signal generated when potential of the external power supply is lowered to a predetermined potential level. The delay circuit includes an inverter array having a plurality of stages each containing an inverter. The plurality of stages include a final stage that outputs the delayed discharge signal. Only the inverter of the final stage generates an RC delay. The discharge unit discharges a internal power supply included in the internal power supplies in response to the delayed discharge signal output from the inverter of the final stage of the inverter array.
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