p89lv51rd2 ISP programming

[Benoit]

Hi

I'm triing to program a p89lv51rd2 device but I have always a message '' The device signature does not match the expected values.  Accessing a device using the wrong protocole could render the device unusable.''  When I read the device ID,  It send Manuf 0XBF and device ID is 0X91.

What is the problem with this device ?

Does anyone can help me to solve my problem ?

Best regards

[Andy Ayre]

I believe that some of the LV devices may not have the right signature in them. If you are 100% convinced that you are using the correct device, then you can disable the signature checking in the advanced options (Options -> Advanced Options)

[Benoit]

Hi Andrew

That's right !!!  All works very well.

Thank you very much for your help.

Benoit.