I was updating my Picaxe quick reference chart for the M2 chips when I noticed that I was only able to count 16 I/O pins on the 20M2 instead of the 18 listed on the web site. Can the serial IN and OUT pins be used for an input only and output only pin like the other M2 chips?
This got me to checking and I found a similar situation with the X2 chips.
I can only locate 17, 21 and 32 I/O pins on the pin out drawings for the 20X2, 28X2 and 40X2 yet the specification grid on the web site list 18, 22 and 33 I/O pins.
It seems like I have seen the answer to this somewhere but am unable to recall it from a forum search.
Thanks,
Dave E
This got me to checking and I found a similar situation with the X2 chips.
I can only locate 17, 21 and 32 I/O pins on the pin out drawings for the 20X2, 28X2 and 40X2 yet the specification grid on the web site list 18, 22 and 33 I/O pins.
It seems like I have seen the answer to this somewhere but am unable to recall it from a forum search.
Thanks,
Dave E