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MBCluster
Canada
4 Posts |
 Posted - 07/19/2017 : 19:34:04
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Hey guys,
Love the Willem GQ-4X programmer, but having a problem writing to an Intel AN83C51FA chip.
I purchased the proper "AT89 / 51AVR / MCS-51 adapter For Willem Programmer" adapter, and according to the description, can R/W the "i8xC51" chips, so thats what I want. When I plug in the chip, I get a warning "ID Check failed 8953", but I can read the chip OK, but I cannot write to the chip.
Can anyone help, how can I write this chip? I saw a thread saying something about increasing the write current for the 87C51, but I dont know how to do this, assuming this is what is missing for the 83c51.
HELP!
Thanks,
James
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| Reply #1
anniel
2572 Posts |
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| Reply #2
MBCluster
Canada
4 Posts |
Posted - 07/20/2017 : 17:29:21
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Hello, and thank you for taking the time to help.
Yes it is the same adapter. I purchased from the Ebay store :
www.ebay.ca/itm/AT89-51AVR-MCS-51-adapter-For-Willem-Programmer/290582917840?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m2749.l2649
Seems the title is not as good as the description, but it is the same.
My System = WinXP 32b
My Chip = AN83C51FA
Some pics attached, the following is me opening the application, can see version
Image Insert:
82877 bytes
Then selecting device: (only one option 87C51FB)
Image Insert:
41218 bytes
Try to perform read with warning:
Image Insert:
82500 bytes
Read successful (with blank chip):
Image Insert:
151072 bytes
Write unsuccessful :
Image Insert:
128538 bytes
Examine lock status, dont know what this does?
Image Insert:
31664 bytes
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| Reply #3
anniel
2572 Posts |
Posted - 07/20/2017 : 18:18:43
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| You are aware that your AN83C51FA and the 87C51FB are not the same size? |
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| Reply #4
MBCluster
Canada
4 Posts |
Posted - 07/20/2017 : 18:40:55
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I was not aware. The adapter has the PLCC44 socket, so it is at least pin compatible.
According to the ADP-015 description, it takes :
Intel:i87C51, i87C51FA, i87C51FBi8xC51,i8xC52,i8xC54,i8xC58
So by that I assumed that the R/W interface was the same. The size of the internal flash shouldn't matter, the tool will R/W to whatever the capacity is?
There is only one selection for Intel in 7.11, which is 87C51, so I must pick it.
Is the problem support for the other variants? Does customer support need to add support? I read somewhere that CPUs have masks, is this a mask issue?
Thanks,
James |
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| Reply #5
ZLM
2945 Posts |
Posted - 07/22/2017 : 07:44:43
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The Intel 93C51AF is OTP/ROM type chip.
It only can be read. No way to re-program the chip. |
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| Reply #6
MBCluster
Canada
4 Posts |
Posted - 07/23/2017 : 10:21:06
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Aha! Thanks for the clarification ZLM! OK, I think I understand now. Here is a snapshot from documentation :
Image Insert:
19371 bytes
So the ROMless version must use an external Rom/EPROM. The ROM must be some vendor specific chip, programmed from the factory, and the EPROM version is the version which can be reprogrammed using the GQ-4x?
So in my case, I am repairing a system with an 83c51fa, which is malfunctioning. I can read the contents, and then get an upgraded 87c51FA to write the contents, and then I can replace the original?
That sounds logical.
So the interesting thing is, I found a seller on ebay and purchased a replacement 83C51FA chip, as can be seen in the photos, I read back all FFs. So then it would be illogical to even sell this chip, as it is useless!?
I can probably also go for the 93C51AF, as it is OTP.... I assume the GQ-4X supports that?
Can anyone confirm the above assertions?
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| Reply #7
ZLM
2945 Posts |
Posted - 07/25/2017 : 14:36:22
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The GQ-4X can program OTP chips if it is in the device list.
But the 83c51fa is not the OTP, it is the ROM type. not able to be programmed with GQ-4X.
Both 83c51fa and 93C51AF are not tested and confirmed on GQ-4X.
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| Reply #8
anniel
2572 Posts |
Posted - 07/27/2017 : 14:16:21
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quote:
Originally posted by ZLM
The GQ-4X can program OTP chips if it is in the device list.
But the 83c51fa is not the OTP, it is the ROM type. not able to be programmed with GQ-4X.
Both 83c51fa and 93C51AF are not tested and confirmed on GQ-4X.
The datasheet doesn't seem clear about the ROM version being an OTP or a mask. |
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Cannot write to Intel 83C51
