MCUmall EPROM BIOS Chip Burner Forum
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 Issue with CSI93c56a

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T O P I C    R E V I E W
luklyz Posted - 04/25/2015 : 05:47:43
Hi
I have a issue with CSI93c56a.
Reading the chip: i select a generic 93c56, csi93c57, comes back with weird data. Selecting Fairchild f-93c56 gives me a good (correct) data, but cant write the chip. It writing but cant verify and nothing changes. After few attempts of writing, the chip reads all ff.
I`m assuming the chip is damaged.
I`m wondering if you are going to provide a support for for this chip.
Do you have other suggestions.
4   L A T E S T    R E P L I E S    (Newest First)
luklyz Posted - 04/30/2015 : 18:51:25
its not working, its not reading right. im wondering if all the pins should be connected?
thank you
ZLM Posted - 04/26/2015 : 23:15:01
It looks like nothing special.

The CAT93c56 chip is compatible with 93C56C. In that case you can try 93C56C_8bit and 93C56C_16bit from software.
luklyz Posted - 04/26/2015 : 19:29:54
CSI is a CAT am I right? here is a link for CAT 93c56
h**p://datasheet.octopart.com/CAT93C56LI-G-ON-Semiconductor-datasheet-5319227.pdf

I tried lower speed. No luck. Only Fairchild is reading fine but is not writing properly.
I'm willing to try anything to make this work.
Thank you
ZLM Posted - 04/25/2015 : 21:37:09
The chip should be fine.

This chip should be supported.

Can you find the datasheet of this chip?

Try slower speed.

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