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

I should also mention that when using the SX48 that the MAX232 (w/caps), the EEPROM are optional components.  I do find it useful however to have them onboard.  The ATN line that would normally available on a Stamp module is wired to the MAX232 but isn't connected.  That keeps it from resetting the SX48 chip.  This allows the module to sit in place of a 40 pin Stamp and can log data back to a terminal session like HyperTerminal with no wiring changes.  In SX/B it's a breeze to use.  If the extra parts are left off you could jumper over to the pads of the MAX232 to bring the signal directly to the breadboard pin for a couple more I/O's.  For power it has an onboard voltage regulator.  I've used two different LDO versions.  One was rated at 800ma and the other at a full amp.  It's nice if you need to power a few other things and don't want to use another regulator.

Robert

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