Digital I/O to Digital I/O

[jmcdougall]

What is required to tie a digital output of one CPU(Superpro)Master to a digital I/O of another CPU(LPC1114)Slave. One is output the other is input. Need a simple signaling process from one cpu to the other. Can they be directly wired?

[basicchip]

Yes the outputs of one CPU can be connected directly to another CPU. Both the 1756 and 1114 are 3V swing parts, and a 5V tolerant and compatible.