differences in chips?

Jayguy5000

I am looking for a page describing differences between all the chips, propeller,javelin,sx, and all of the basic stamps. I however did not find anything, any one know where this page may be?

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Actually I think Im going to add the whiskers to my tank and let it roam, just need to figure out where.

Mike Green

How about this: www.parallax.com/html_pages/tech/faqs/stamp_specs.asp

It only includes the various Stamps. I'm not aware of any page that includes the Propeller, SX, and Javelin because they're really quite different.

You need to keep in mind that the Stamps are complete modules including a processor (PIC or SX), memory, clock, power regulators, reset circuitry, and device programming circuitry. The Javelin is similar in that way. What makes the Stamps and Javelin unique is the interpreter that's pre-programmed into the processor.

The SX and the Propeller are microprocessor chips. They need some support circuitry around them which is supplied on the various development boards and modules and those are what you might compare to the Stamps.

Post Edited (Mike Green) : 8/21/2007 1:59:00 PM GMT

allanlane5

The various BS2 variants are all quite similar, differing in clock speeds, local RAM, and number of EEPROM 'slots'. They run using an on-chip run-time engine, running your code from an on-module eeprom. They are extremely simple to program, and extremely reliable to run. The BS2 'plain' also takes very little power -- 2 to 3 mA when running.

The SX (28, 48, and 52) are true microprocessors, programmed with the SX/Key using SX/Basic. These run like greased pigs, at 50 MIPS or higher. These were originally created by Ubicom as the "Scenix" processors. As such, they are PIC clones, optimized to run at extremely high speed (for a PIC platform, anyway).

The Propeller is the newest Parallax platform. This provides 8 cooperating cores of microprocessors on a single IC.

Oh, and the Javelin is basically a Java Stamp (Java Stamp was trademarked by another company, oops) -- which runs a Java interpreter on a BS2 24-pin wide DIP form-factor.