<div dir="ltr">Wow, this is 100 pins ... sure it has everything you need (and a lot of things that you don't need). But is 14mm square, I hope you have enough board space.<div>Check this link for reference - you can use design files of this eval board for quick start: <a href="http://www.st.com/web/en/catalog/tools/FM116/SC959/SS1532/PF259717">http://www.st.com/web/en/catalog/tools/FM116/SC959/SS1532/PF259717</a></div>
<div><br></div><div>There is a claim in the datasheet: "Internal 48 MHz oscillator with automatic trimming based on ext. synchronization" - not sure but I suspect that this would be a good option if used on USB - no need for clock crystal for the STM32.</div>
</div><div class="gmail_extra"><br><br><div class="gmail_quote">2014-08-07 17:29 GMT+03:00 Miguel Garcia <span dir="ltr"><<a href="mailto:gacuest@gmail.com" target="_blank">gacuest@gmail.com</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
2014-08-07 16:23 GMT+02:00 krasi gichev <<a href="mailto:krasimirr@gmail.com">krasimirr@gmail.com</a>>:<br>
<div class="">> Yep, 071 is good if host connection is either I2C or SPI. There are 2 I2C<br>
> controllers so it can run as gateway.<br>
> But for USB there is STM32F072CBT6 - at Digikey it is priced at 2.37USD for<br>
> 1000pcs -<br>
> <a href="http://www.digikey.com/product-detail/en/STM32F072CBT6/497-14645-ND/4815292" target="_blank">http://www.digikey.com/product-detail/en/STM32F072CBT6/497-14645-ND/4815292</a>.<br>
> This one is in 48 pin. If more pins are needed, just switch to:<br>
> STM32F072RBT6 -<br>
> <a href="http://www.st.com/web/catalog/mmc/FM141/SC1169/SS1574/LN1823/PF259605" target="_blank">http://www.st.com/web/catalog/mmc/FM141/SC1169/SS1574/LN1823/PF259605</a><br>
<br>
</div>And this: <a href="http://www.digikey.com/product-search/en?KeyWords=STM32F072VBT6" target="_blank">http://www.digikey.com/product-search/en?KeyWords=STM32F072VBT6</a> ??<br>
<div class="HOEnZb"><div class="h5"><br>
Thanks.<br>
<br>
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