Author Topic: P89V51RB2FN can not erase  (Read 5993 times)

nova

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P89V51RB2FN can not erase
« on: September 01, 2006, 08:41:40 pm »
  I have 2 kind of P89V51RB2FN, one 's label is white, and the other 's label is yellow. With white label kind, I have no problem. But with yellow label kind, I have a big problem: I can not erase Flash Rom. I can use Flash Magic to download program at the first time and it work properly (because at the first time, all Flash are 0xFF). After that, If I chose erase Flash from ISP menu, the Flash still keep the old value.
  I don't know how is different between two kind of chip have. The white label I had 6 month ago, and the yellow label I have just received them.

duy382135

Andy Ayre

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Re: P89V51RB2FN can not erase
« Reply #1 on: September 05, 2006, 10:28:07 am »
The color of labels doesn't tell me anything. However the numbers and letters printed on the casing of the device does. What do your devices have on them?

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nova

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Re: P89V51RB2FN can not erase
« Reply #2 on: September 09, 2006, 08:04:56 pm »
 The full label is:
 P89V51RB2FN
 FA63-0662
 -zG0628 82

duy382135

Andy Ayre

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Re: P89V51RB2FN can not erase
« Reply #3 on: September 11, 2006, 07:36:52 am »
So the devices that work and the devices that don't have exactly the same letters and number printed on them? No differences?

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nova

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Re: P89V51RB2FN can not erase
« Reply #4 on: September 11, 2006, 07:49:45 am »
 The full label of the device work well is:
P89V51RB2FN
FA 460260
-Z 0442 B2

 And the device that don't work (can't erase normally) have the label:
P89V51RB2FN
FA63-0662
-zG0628 82

duy382135

Andy Ayre

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Re: P89V51RB2FN can not erase
« Reply #5 on: September 11, 2006, 07:56:19 am »
Thanks. I've forwarded this info to Philips.

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