MCUmall EPROM BIOS Chip Burner Forum
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_Alibo

Germany
7 Posts
Posted - 12/20/2020 :  10:30:18  Show Profile  Reply with Quote
Hi folk,

I have tried to program the I2C EEPROM out of a Becker car radio.
To read out the device is possible with settings of the 24C08 Device. But erase and programming isn't possible.

Has someone found the correct setting for this device?

Thanks in advance
Klaus
Edited by - _Alibo on 12/31/2020 07:31:46
Reply #1

anniel

2529 Posts
Posted - 12/20/2020 :  13:55:57  Show Profile  Reply with Quote
quote:
Originally posted by _Alibo

Hi folk,

I have tried to program the I2C EEPROM out of a Becker car radio.
To read out the device is possible with settings of the 24C08 Device. But erase and programming isn't possible.

Has someone found the correct setting for this device?

Thanks in advance
Klaus
You attempted in or out of circuit? Do you have the datasheet?
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Reply #2

_Alibo

Germany
7 Posts
Posted - 12/21/2020 :  01:38:10  Show Profile  Reply with Quote
I have attempted it out of the circuit
i havn't fount any datasheet for this circuit; it should be similar to the 85C72;
Here a link to the datasheet of the circuit: https://datasheetspdf.com/pdf-file/1246104/Microchip/85C72/1
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Reply #3

anniel

2529 Posts
Posted - 12/21/2020 :  14:30:06  Show Profile  Reply with Quote
quote:
Originally posted by _Alibo

I have attempted it out of the circuit
i havn't fount any datasheet for this circuit; it should be similar to the 85C72;
Here a link to the datasheet of the circuit: https://datasheetspdf.com/pdf-file/1246104/Microchip/85C72/1
Try this:

Name="BAW574242",ID="XXXX",Class="24C01",Category="SERIAL_EPROM",MFG="ALL(Generic)";
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Reply #4

_Alibo

Germany
7 Posts
Posted - 12/22/2020 :  02:21:18  Show Profile  Reply with Quote
when i add the parameter VCC="5V" then i can read out the EEPROM; but erase and write the device is still not possible
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Reply #5

anniel

2529 Posts
Posted - 12/22/2020 :  08:19:30  Show Profile  Reply with Quote
quote:
Originally posted by _Alibo

when i add the parameter VCC="5V" then i can read out the EEPROM; but erase and write the device is still not possible
Did you try a lower speed?
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Reply #6

_Alibo

Germany
7 Posts
Posted - 12/22/2020 :  12:15:31  Show Profile  Reply with Quote
Yes, i tried lower speeds also
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Reply #7

anniel

2529 Posts
Posted - 12/22/2020 :  13:30:10  Show Profile  Reply with Quote
quote:
Originally posted by _Alibo

Yes, i tried lower speeds also
What is the error message you get?
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Reply #8

_Alibo

Germany
7 Posts
Posted - 12/23/2020 :  01:01:08  Show Profile  Reply with Quote
I get no error message by writing. Writing ends quite normal but afterwards the compare to the original data fails: no byte in EEPROM was written.
The erasing of the chip never ends: the program shows 100% but the routine never ends. The whole program must be quit. And afterwards the chip content isn't erased.
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Reply #9

anniel

2529 Posts
Posted - 12/23/2020 :  04:47:34  Show Profile  Reply with Quote
quote:
Originally posted by _Alibo

I get no error message by writing. Writing ends quite normal but afterwards the compare to the original data fails: no byte in EEPROM was written.
The erasing of the chip never ends: the program shows 100% but the routine never ends. The whole program must be quit. And afterwards the chip content isn't erased.
Can you get an ID?
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Reply #10

_Alibo

Germany
7 Posts
Posted - 12/23/2020 :  08:58:45  Show Profile  Reply with Quote
i get an error message: this function is not supported by this device
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Reply #11

_Alibo

Germany
7 Posts
Posted - 12/31/2020 :  07:34:15  Show Profile  Reply with Quote
I have corrected the circuit name to BAW574252
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