In SX Microcontrollers, SX/B Compiler and SX-Key Tool, robotworkshop wrote:

Hello Günther,

You are absolutely correct.  The few components I was refering two was using a MAX3232 vs MAX232, the .1uf caps vs 1uf for the MAX convert, and a 3.3v regulator vs a 5v one.  All the pads are the same and the board should work either way.  I've recently used the MAX3232 and similar parts when trying out the propeller.  I'm just so used to the 5v parts that I didn't think about using them with the SX48 initially but since it can support either voltage i'll see about offering it both ways.

I was thinking about having a small trace (which could be cut) or jumper near the VOUT pin on the board so that if someone already had a circuit which applied 5v power there instead it wouldn't interfere with the 3.3v regulator on this module.  I just want to make sure this can fit in standard 40 pin socket (like the BS2p40) and be compatible with it.

Do you happen to know how tolerant the SX48 part is to 5v on it's I/O ports when the core is running at 3.3v?  Would the same rules apply as in the propeller forum?

Robert

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