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Help me!

Started by Tong Zhu, August 06, 2003, 07:32:11 PM

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Tong Zhu

I have P89C51RD2BA.First time,I use Flash Magic,it's OK.But I use it again,it promtps: "Unable to read the security bits and clocks bit.

Andy Ayre

After trying to use Flash Magic and failing, put the device into the parallel programmer and read the value of the Boot Vector. It should be FCH. If it isn't then for some reason the Boot Vector is being corrupted. Please Email me for further assistance.

Embedded Systems Academy, Inc.
support at esacademy dot com

Tong Zhu

Sorry,I don't know your email,can you tell me?

I read the value with parallel programmer:Boot Vector is FCH,Status is 00h,Clock is 12x,Sceurity bit is unset.

Andy Ayre

OK. Try this. Download application note 4 from the Flash Magic web page and follow the steps in that document. It will lead you through some things to try. Let me know what you find out. My Email address is at the bottom of all my postings.

Embedded Systems Academy, Inc.
support at esacademy dot com

Tong Zhu

I have emailed the debug file to you.Thank you!