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Questions on Reprogramming MC68C711E9CFN2 chip

Started by Rakesh Krishnan August 9, 2006
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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--- In m..., Rakesh Krishnan
wrote:
>
> 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?

You MUST erase the EPROM. This is done with an UV eraser if the chip
has a window. It cannot be done if the chip is in a closed plastic
case, OTP (One-Time-Programmable).

>
> Regards,
> Rakesh
Emmett Redd Ph.D. mailto:E...@missouristate.edu
Associate Professor (417)836-5221
Department of Physics, Astronomy, and Materials Science
Missouri State University Fax (417)836-6226
901 SOUTH NATIONAL Dept (417)836-5131
SPRINGFIELD, MO 65897 USA

"When I was a child, I spake as a child, I understood as a child, I
thought as a child: but when I became a man, I put away childish
things," like being too embarrassed to ask questions which my peers
might think as stupid.
----- Original Message -----
From: "Rakesh Krishnan"
To:
Sent: Wednesday, August 09, 2006 10:56 AM
Subject: [m68HC11] Questions on Reprogramming MC68C711E9CFN2 chip
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

>No kidding, the CFN2 parts that I have in stock here are PLCC devices
which makes them OTPs. Surely you >are not trying to REPROGRAM an OTP
device???

. 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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