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Hi All

When i programmed the MC68HC711E9CFN2 Chip with a Version A of Software (.S19) it programmed sucessfully. I made some modifications in the Version A Software and made it to Version B and created S19 for version B software. When i tried reprogramming Version B S19 to the same chip MC68HC711E9CFN2 which contains the version A software, I AM NOT ABLE TO REPROGRAM THE CHIP, The error coming while reprogramming is VERIFICATION ERROR . I am using EVBPlus2 Baord for reporgramming the Chip.The Error is displayed below:
---------------------------------------------------
Checking test.s19 for any errors
No error, file checksum = $BB92

Programming on-chip EPROM (EVBplus2 board)
Programming (with verifying) at addresses: $dff0-$dfff
verification failed at address $e000:
Data in the file is 1, but received from chip is 0.
---------------------------------------------------------------

1. Wwhat might be the problem for the Above error....?

2. Should i ERASE the Version A software which is residing in the EPROM of MC68HC711E9CFN2 chip using UV rays. i.e using UV rays ERASER?

Regards,

Rakesh



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