On Wednesday 13 July 2005 14:07, Matt Evans wrote: [...]
:-) It says the inputs are always 5V-tolerant. So, it will probably Just Work - cross the voltage-too-low bridge if you come to it. (Modify the cable to run I/O at 5V rather than 3.3V if necessary.)
Actually, it never occurred to me that it might be in danger --- the idea of a USB slave chipset that can't cope with 5V inputs is a bit bizarre, given that USB is all 5V!
(In fact, I'm a little bemused about why the PL2303 is powered off 3.3V.)
Looking closely at the PCB it actually looks like quite a nice little thing; there are pads for all the output signals, so if you want DTR or RTS they're available, and there's a whole bunch of diagnostic pads of unknown purpose. There's also a 8-pin IC blank and a six-pin jumper blank. I suspect this is for the PL2303's configuration EEPROM. There's definite hacking possibilities here.