Some of the older chips do not have a very accurate internal OSC, I can not say about the 675. If this is for production it might be worth using a 50 cent resonator just to be sure.
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Re: Getting 19200 baud serial out of a PIC
Some of the older chips do not have a very accurate internal OSC, I can not say about the 675. If this is for production it might be worth using a 50 cent resonator just to be sure.
Re: Getting 19200 baud serial out of a PIC
SEROUT2 handles 19200 with a 4Mhz or better OSC.