[51] programming error with 89c52

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Dear all
I program 89c51 on top853 programmer then it successfully programmed. But when I place new purchased 89c52 on programmer & write then it shows ''write...error at:0000:FF''.here wether the uc is defective or I have to change setting?please give reply.
 

Thank you for reply.surely i have selected 89c52 in place of 89c51.
 

Most of the time these types of messages generated due to old Zif-socket or Damaged microcontroller.

If you have another New AT89c52 then try that one or while programming gently press the microcontroller.
 
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