Prop voltages process

Mark A

I'm just curious, as I am a into chip design

What process is the Propellor chip made on? I am wondering in general, and also am wondering as it relates to running 5V on a 3.3V part.

Mark

LoopyByteloose

Mark,
I think if you search a little, you will find that the Propellor has been 'accidentally' used with 5volt and that there is some belief that only a resistor may be needed for mating 5v to 3.3v.

Regarding process, I personally don't know. In last day or two, it seems like everyone 'in the know' on the Propeller forum has stopped posting. I suspect it is 'crunch time' in order to get all the documentation and programing pulled together.

So..... please stay tuned.

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
"When all think alike, no one is thinking very much.' - Walter Lippmann (1889-1974)

······································································ Warm regards,····· G. Herzog [noparse][[/noparse]·黃鶴 ]·in Taiwan

Post Edited (Kramer) : 3/26/2006 3:21:27 PM GMT

Beau Schwabe

Mark,

The current Propeller CMOS Process is 0.35um.

As far as 5V inputs to the Propeller, a 1K to 10K current limiting resistor has been used without any ill effects.

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
Beau Schwabe

IC Layout Engineer
Parallax, Inc.

william chan

In comparison, what is the CMOS Process of the SX48?

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
www.fd.com.my
www.mercedes.com.my

Mark A

I think the SX are all .35 as well. But it's a different process that's meant to allow 5V, I would imagine.

On a different note, I didn't know the first Ubicom IP2000 parts ~120 MIPS spec was actually an EFFECTIVE number from all the different threads. I guess I never looked at the parts in detail. Lame.

What I'd rather like to see is just a single-thread fully deterministic true 100 MIPS processor, but with a real instruction set, etc (inlike an SX)