ATAES132A production status

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xennex2
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Posted by xennex2: Mon. Jun 1, 2020 - 03:46 PM
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ATAES132A is marked 'not recommended for new designs'.

 

What does this mean?  Is the chip going to be discontinued?  Or is there a replacement in the works?

 

I've reached out to Microchip multiple times over the last several months but they do not reply. 

 

I don't want to incorporate this into a new design if the chip gets discontinued in a short period.

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Security, General Security Discussions
Last Edited: Mon. Jun 1, 2020 - 04:09 PM
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xennex2
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Posted by xennex2: Thu. Jun 4, 2020 - 09:56 PM
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Microchip contacted me - it is not going to be discontinued.

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anha6317
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Posted by anha6317: Fri. Jun 12, 2020 - 12:06 PM (Reply to #2)
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Did they say why it's not recommended for new designs?

 

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xennex2
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Posted by xennex2: Sat. Sep 5, 2020 - 02:39 AM (Reply to #3)
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No, but I suspect the functionality will be rolled into another product.

 

I experienced the same thing with the AT88 and ending up using the ATSHA204.  The AT88 was not reliable at all.  The ATSHA204 is reliable using i2c but not using single wire.

Last Edited: Sun. Sep 13, 2020 - 04:39 PM
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PhillyNJ
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Posted by PhillyNJ: Sat. Sep 5, 2020 - 11:46 PM
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xennex2 wrote:
The ATSHA204 is reliable using i2c but not using single wire.

 

Why do you say? I have both i2c and SW and not seen or experienced any issues.

"When all else fails, read the directions"

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xennex2
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Posted by xennex2: Sat. Sep 12, 2020 - 12:10 AM
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PhillyNJ wrote:

Why do you say? I have both i2c and SW and not seen or experienced any issues.

How many devices do you have out in the field? I've got a lot in use and the single wire is about 3 orders of magnitude higher failure rate than i2c.

 

Also, as I mentioned, I started with the AT88 and then switched to the ATSHA204 when it became available, and the ATSHA204 is a lot better than the AT88 when using single wire.  But the I2C is rock solid.

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