| 摘要 |
PROBLEM TO BE SOLVED: To provide PLD(programmable logic device) system where a PLD is surely initialized at application of power. SOLUTION: The PLD 1 is an aggregate of logic circuits where optional circuit functions can be realized. A power supply applies a voltage V1 to the PLD 1. A delay pulse circuit 3 gives an initializing signal V2 to a CONFIC terminal of the PLD 1 when a prescribed time elapses after the voltage V1 from the power supply 4 rises and the voltage V1 is settled. Every time a memory 2 receives a clock C from the PLD 1, the memory 2 gives serial data D to set a circuit function and the PLD 1 uses the data D and completes initializing.
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