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> 4 digit presettable count down timer kit, 4 modes K154
4 digit presettable count down timer kit, 4 modes K154
4-Mode Presettable digital counter.
There are four operating modes that control the operation of the counter and the output pin. The RESET input does not affect the operating mode.
Mode A ........count stop, output hold (default)
When the count reaches zero the output goes low and stays low. The counter stops counting. Reset to continue. This is the operating mode on power up.
Mode B ........over-count, output hold
When the count reaches zero the output goes low and stays low. The count will wrap around to 9999 on the next count input and continue counting from there.
Mode C ........auto-reset, one-shot output
When the count reaches zero, the counter automatically resets itself to the preset value and the output pulses low. The pulse width depends on the speed of the count input.
Mode D ........over-count, one-shot output
When the count reaches zero the output pulses low. The count will wrap around to 9999 on the next count input and continue counting from there. The output pulse width depends on the speed of the count input.
