/technologies/internet-of-things/b/blog/posts/need-2-serial-ports-but-only-have-1It is common to have resource conflicts when designing with microcontrollers. It could be memory, I/O ports or any other constrained resources which often leads to having to choose a more expensive device with a larger package. I faced a similar situen-USTelligent Community 12https://community.element14.com/technologies/internet-of-things/b/blog/posts/need-2-serial-ports-but-only-have-1Sat, 01 Aug 2015 07:57:44 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:e963bfa6-46f2-4baa-ace3-c25b05fdcffcmichaelkellett1<p>Most micros have multi function pins but only a few allow complete re-mapping of any function to any pin. It&#39;s a nice feature of some of the Silabs 8051 based parts but you would only use that architecture with some reluctance on a new design now.</p><p>Do they offer it on any of their ARM Cortex based parts ?</p><p>&nbsp;</p><p>Some of the NXP Cortex M0 parts do offer comprehensive pin re-mapping and it can be very useful on low pinout devices.</p><p>&nbsp;</p><p>Of course FPGAs&nbsp; offer the same for nearly every pin (but timing issues may restrict your choices).</p><p>&nbsp;</p><p>No one offers a high pin count micro with totally re-mappable pins - that would be really nice !</p><p>&nbsp;</p><p>MK</p><img src="https://community.element14.com/aggbug?PostID=161&AppID=27&AppType=Weblog&ContentType=0" width="1" height="1">