Flash Magic Forum

In-System Programming Support => P89V51Rx2/P89LV51Rx2 => Topic started by: marquisparent on November 20, 2009, 09:04:36 am

Title: Re: Debugging ISP Problems
Post by: marquisparent on November 20, 2009, 09:04:36 am
I notice a talk about the crystal freq.

Im using a P89V51RB2 and RC2, and its not possible to change the Oscillator Frequency.
I`m running a 12mhz at this point and my comm doesn`t work.
it seems like im have a U coming in....i have to hook it up to hyper terminal to see if its a U.

Should I use a 11.0592Mhz crystal?
Title: Re: Re: Debugging ISP Problems
Post by: Andy Ayre on November 20, 2009, 07:59:33 pm
12MHz should work for autobauding at 9600 baud at least.

Andy
Title: Re: Debugging ISP Problems
Post by: marquisparent on November 23, 2009, 06:58:32 pm
I GOT HER TO WORK NOW.....its great