Enhanced Download Circuit

[Pongo]

I noticed the Enhanced Serial Download Circuit is marked "(NB: Obsolete, for info only)". Does that statement assume that nobody uses a real RS-232 serial connection any more, or does it mean that the standard circuit is OK for use with a full spec serial connection?

 

[Technical]

The standard circuit has always been fine for full voltage RS232 as well. The enhanced circuit is only really of added benefit when trying calibration of touch sensors / adcs etc when using full voltage RS232.

If using AXE027 or other brand logic level cables it is of no benefit.

 

[Pongo]

Thank you for the explanation. I'm almost always using serial ports and have used the enhanced, but now I see don't always need to do that