m1macrophage

What is the part number of IC2? Also, any idea what the CPSCK frequency might be, when it is operating? The time constant (R3 x C2) is large enough that...

If R3 and C2 did not exist, then INTA would indeed just be a Schmitt-cleaned SCLK1. But given the values of R3 and C2, and if I am interpreting this...

> my understanding is that R3/C2 only slow the CPSCK edge going into the schmitt input Correct. R3/C2 is just a low-pass filter. It will indeed cause the Schmitt input...

> TC7W14F Cool, that verifies this is indeed a Schmitt trigger inverter, which verifies one of the assumption we were making earlier. > I'm not entirely sure, but these routines...