MCUmall EPROM BIOS Chip Burner Forum
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 Problem reading a new 24c01 eeprom in old system		  New Topic  Reply to Topic
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rsm4mcumall

USA
2 Posts
Posted - 03/27/2013 :  09:08:22  Show Profile  Reply with Quote
I am trying to replace a damaged CSI 24C01BJ EEPROM in an old system.

The problem is that the data is not readable on a new chip in the old system.

I can read the data and write the data to the old chips and install them into the old system and it works perfectly.

I can write the data to a new chip and it will not read when installed in the old system.

I can only read the data on the new chip with the USB programmer.
Using GQ-4X with latest software downloaded from this site.

I have tried the following 2 new chips:
AT24C01BN-SH-T
CAT24C01WI-GT3

I have tired different write speeds also.

I need to be able to install a new chip to replace damaged or corroded ones that get returned from the field.

Why can I read and write to an old original chip, but cant read the data back from a new chip when installed into the system????

Thanks

ON Semiconductor only help after 3 days was this :

Thank you for contacting ON Semiconductor.

The old part CAT24C01B has a different functionality / addressing modes compared to CAT24C01.
Reply #1

ZLM

2945 Posts
Posted - 03/27/2013 :  13:08:19  Show Profile  Reply with Quote
http://www.mcumall.com/forum/topic.asp?TOPIC_ID=5087
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