P89C51RD+IN wrong device signature

[Modelworks]

I just started with the 8051.
I have the P89C51RD+IN chip connected through a Max232 to the serial port.
Communication settings are :Com1, 2400 baud, interface isp, 11.059 frequency.

When I set the device to 89c51RD+ I get an error that the device signature does not match.

For device id , I get : 15, C2, FF

If I check security bits I also get that they are all set, even though this is a brand new chip.




Help welcomed !



Post Edited (07-20-06 16:18)

[Andy Ayre]

The last value of FFH looks odd. I don't have the data in front of me right now, but I don't think that any of the Philips device signatures end in FFH.

I would suggest that you go to the Options -> Advanced Options -> Misc and disable signature checking, however the device you are using I believe is obsolete.

Andy