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What is the microcontroller (I assume) at the top of this picture, marked 26384533TVO?

This picture is from the inside of a wireless sensor, where an accelerometer and radio are also present. The device appears to be a 16 lead QFN, likely 3 mm x 3 mm.


(source: staticflickr.com)

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  • \$\begingroup\$ It very well may be a custom ASIC. \$\endgroup\$ Mar 16, 2012 at 16:20
  • \$\begingroup\$ Possible, but, this is coming from a low investment startup (greengoose.com). Everything else is off-the-shelf. \$\endgroup\$ Mar 16, 2012 at 16:27
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    \$\begingroup\$ That's a Freescale logo. \$\endgroup\$
    – markrages
    Mar 16, 2012 at 17:37
  • \$\begingroup\$ It's 8-DFN, not 16-QFN, no? Freescale doesn't have part marking info for their small microcontrollers that I can find. Still, they only make a few in DFN8. \$\endgroup\$
    – markrages
    Mar 16, 2012 at 18:47

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That looks like it could be a generic knockoff of the 8453 accelerometer. Freescale's MMA8453Q is in a similar package.

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  • \$\begingroup\$ 'doh. I'd assumed that was the micro, in fact the other chip must be. So, now I have a new question... \$\endgroup\$ Mar 16, 2012 at 17:20
  • \$\begingroup\$ already anticipated the new question, and seeing what I can dig up \$\endgroup\$
    – Tevo D
    Mar 16, 2012 at 17:21
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    \$\begingroup\$ @Michael, I seem to have a knack for finding things? Conclusion is a stronger word that I used, as I indicated it could be the right part. This was based on the information provided. I checked each part of the part number and searched for likely possibilities. Joby indicated that an accelerometer was present, so this was a close match. The decoupling cap C18 on pin 14 and NC on 15-16 are consistent with the spec for the accelerometer, so I floated it as an answer. \$\endgroup\$
    – Tevo D
    Mar 16, 2012 at 18:11
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    \$\begingroup\$ @TevoD In other words "Elementary my dear Watson." \$\endgroup\$
    – Michael
    Mar 16, 2012 at 18:21
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    \$\begingroup\$ I think it was the lure of TVO part being close to TEVO that made him obsess over finding it... \$\endgroup\$
    – minnow
    Mar 16, 2012 at 18:46

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