----- Original Message -----
From: <Richard.Prosser@POWERWARE.COM>

> IIRC most of the AVR micros will only source about 2-5mA from an output
> port (they will sink more however). Therefore, when driving a NPN
> transistor, the maximum current may be limited by the available base drive
> current.

Not according to my handy-dandy AT2323_2343 "RTFM" manual. It says on pg.
47:
"DC Current per I/O Pin.....................40.0 mA
DC Current Vcc and GND Pins........200.0 mA"
Other AVR's may be different, but the At90s2343 and Atmega8, the two I'm
most familiar with both can source 40 or so mA per pin with a total per chip
of a couple hundred mA.

- Robert

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