Not quite sure if this is the correct forum....
I am looking for a counter IC that I can send a command to like '100', it will count to that number, and will set a pin to high (or low, whatever). I want to use something off board to do the counting, because I don't know how fast the data will be coming in, and I don't want to have my main board (Arduino) stuck counting cycles. It only needs to respond to the interrupt when the count is hit.
I could just use some 74xx or 40xx series ICs, but I don't know of one that will let me set it dynamically. Let's say I want to count to 100, then the next set of cycles to 50, etc. The standard ICs have to be wired, and the proper reset level set.