20MHz improve RF over 16F628A?

[mbw123]

I am using a 4MHz crystal with 15pF caps. I want to improve speed and baud rate on my PIC16F628A. What is the max baud rate with a 20MHz crystal? What size caps should I use with a 20MHz crystal? Thanks.

-Mike

[mister_e]

use this.
http://mister-e.org/pages/utilitiespag.html

[mbw123]

Thank you for the response. Serial communication aside, will the 20MHz crystal still speed up the PIC with noticeable differences? (the application being a serial buffer, not the baud rate, i.e. will the buffer be cleared faster?) Thank you very much!

-Mike

[mister_e]

20/4=5 times faster...