I am trying to use a 74ACT11867 or equivalent serial 8 bit up/down BCD counter , to get a variable BCD output . My clock input would vary from 1Hz thru 1kHz. I think I know how control the up & down, it's just the 0-255 BCD output.
LL clears counter HL will load the data on A through H into the counter and it will begin to count from there up or down, whicher is selected.
Thank You. Do I need to have the data inputs all high to have a Binary output?
The data inputs dont matter except when you load the start number. When S1 is high and S0 is low it will load the data into the counter and that is wher it will start counting. If S1 and S0 are in any other state the data pins are ignored.
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