Can't burn program into P89V51RD2FN in ISP mode

Discussion created by lpcware Employee on Jun 15, 2016
Latest reply on Jun 15, 2016 by lpcware
Content originally posted in LPCWare by Justin Chen on Fri Apr 25 02:18:21 CDT 2014
I have two chips are NXP P89V51RD2BN and NXP P89V51RD2FN.
I have burned program into P89V51RD2BN in ISP mode successfully, but in the P89V51RD2FN can't successful.
I used Flash Magic(the last version) to burn my program.
In P89V51RD2FN, when I started to burn program by Flash Magic, then the "Reset the device into ISP mode now" message showed up, then i pressed reset button in my equipment tried to into ISP mode.
The message always in there, and wasn't burning the program.
I did every thing just like what I did in the successful chip (P89V51RD2BN).
And I researched the datasheet, there is only "Temperature range" different.
So could someone tell me how can I deal with this problem?

Thanks a lot