Serial differences between f628 and f628A

[das1818]

I have used a f628 for years without problems sending 9600bps data, when I switched to a f628A I got data errors. So I went back to the f628. All is well but I know the non A part will get harder to get as time goes on. Do any of you have any helpfull ideas. The serial in and out pins are RA0 and RA1, CMCON = 7 is in the first few lines.
Thanking you in advance

[Melanie]

Are you using a Crystal or Resonator - or are you relying on the Internal Oscillator?

[das1818]

The internal osc.

[Melanie]

Let's put it this way - If the world was flat, you're sailing right on the edge.

Use a crystal or resonator... you've been lucky so far... but it's just run out!

[das1818]

Thank You. The PCB is so full and OSC1 and OSC2 are being used, maybe it's time for a bigger chip and new PCB layout.

[Melanie]

And a Crystal or Resonator!