progamming prob with P89V51RD2FN

[nirbhay]

Hi there,

         i m using SBC with P89V51RD2FN , MAX 232,RS 232 CABLE, 12 MHz crystal
i want to program P89V51RD2FN with flash magic in isp mode.

         i m using lateset flash magic version 2.47 (DLL version 1.95). but my problem is whenever i try to communicate thru serial cable i get the error msg saying that  " Reset the device in ISP mode now " with cancal button.

       i have read previous msgs of ur forum for same problem. so i have tried  
          1. resetting the ckt many times when i got error msg.
          2. switch on & off the power supply.
 
   but still i have the same problem the chip is new one. Is there any other solution? or should i have to depend upon parallel programmer?

       Plz help me. Wating for reply.

       Nirbhay.

[Jan Waclawek]

The general recommendation is use a lower baudrate (what is the baudrate you are attempting now?). 9600 should be generally fine. There is a hint on my website on which baudrates are suitable for autobauding with particular oscillator frequencies.

But I'd try the integrity of the serial line first - see e.g. http://www.8052.com/forum/read.phtml?id=95101

Jan Waclawek

[nirbhay]

Hi  Jan,
 
   Thanx for reply. Problem is solved. There was a problem with serial line as u suggested.  
   
   Thanx  once again.

 Regards,
 Nirbhay