| 摘要 |
A command generator having a single-input multi-out converter is provided. The command generator in a memory device comprises a converter for receiving first and second control signals from external circuit and an input signal having a plurality of pulses to generate binary data denoting a command. The converter comprises an input buffer, in response to the first and the second control signals, for receiving the input signal having a plurality of pulses and outputting an output signal having a number of pulses within a predetermined period; and a pulse counter for counting the number of pulses in the output signal to generate binary data representing the counted number. The command generator counts the number of pulses of a input signal through a pad, that is, performs built-in self-test of the product, thereby product cost can be considerably reduced because of reduction of test time.
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