Messages

It seems that Flash Magic is not able to detect the 89V51RD2 after a reset initiated by clean reset pulse, the message "unable to connect at the specified baud rate" appears 60% of trials.

I am using max232 and rx/tx signals applied on the port COM.

The problem is not reduced even when port com speed is reduced.

There is no difference between using a regular port com versus a "usb to com" adapter.

The problem exists since a long time : it seems not to be design dependant and chip date code dependant.

Can someone of Flash Academy explains us how to improve that poor results ?

I noticed that this problem occurs whith other chips and Flash Magic and I wonder if it is really a bug or a manner introduced by Flash Academy to avoid using Flash Magic in production.

I am using Flash Magic 2.52 to program the follwing 89V51RD2 device :

P89V51RD2BN
CP9457.00
kzg0522 AC


Flash magic warns me now "The device signature does not match the expected values......"

When I accept the warning, the chip is however programmed correclty.


This messages did not appear with the previous version I used : 2.48

I have no other choices in the menu.

Thanks to take not of this issue

Thanks a lot! I will try that !

Hello,

Here is my status:

Flashmagic works ok with 89V51RD2 but sometimes, is not able to enter in ISP. I have understood that this issue a little problem that it will be difficult to get rid of.
I have been able to enter in ISP mode using the U char entered during the few hundreds of miliseconds after RESET.

Here are my questions :

1) How to recover from SoftIce mode without parallel pgm. On the Philips datasheet, SoftIce mode is not explained. Then, just to see what it was, I tried it using the example of the datasheet : :00000002FE. Perfect, but now, it seems that the micro is lost for me, impossible to get the ISP again, probably cleared by this mistake. My BP-1148 (BP microsystems) is not able (as usual) to program 89v51rd2 (when it will be able, Philips will set the micro as obsolete, as usual...).
So, can you tell if it is possible to get again the ISP mode easily?

2) ISP Command :xxxxxx0Bcc to reset and reboot the device on user code
The device is not resetting despite the fact that the command has been correctly accepted by the ISP. A hardware reset is still needed to reboot on user code. The reset pin of my device is pulled down at a low state with a strong pulldown, must I leave this pin a higher impedance to enable the internal reset to operate? Or do I have missed something?

thanks a lot for your help,

Gilles from Strasbourg - France