Groups > comp.lang.forth > #32094

Re: OT: New TI MSP430 Ultra Low Power Chip

From	rickman <gnuarm@gmail.com>
Newsgroups	comp.lang.forth
Subject	Re: OT: New TI MSP430 Ultra Low Power Chip
Date	2014-07-01 04:42 -0400
Organization	A noiseless patient Spider
Message-ID	<lotsac$rl2$1@dont-email.me> (permalink)
References	(7 earlier) <7xwqbyjacb.fsf@ruckus.brouhaha.com> <losqo5$bpt$1@dont-email.me> <7xbnt96gtj.fsf@ruckus.brouhaha.com> <lot5tc$8ga$1@dont-email.me> <7x38elbr60.fsf@ruckus.brouhaha.com>

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On 7/1/2014 1:10 AM, Paul Rubin wrote:
> rickman <gnuarm@gmail.com> writes:
>>> slightly larger 8 pin package.  There is a CSP-package Cortex M4 part
>>> with something like 128KB of ram after all.
>> I don't understand.  That's what the WCSP is.  No lead frame, just a die.
>
> What I mean is that there's a very small M4 WCSP and that makes me
> expect that the die itself is small, and they could put it into a small
> leaded package if only they didn't insist on supplying so many pins.
> But, maybe I'm wrong.

It depends on what you mean by "small".  Look at the image on the page I 
gave a link for.  If the chip is a 4 mm sq CSP it would likely not fit 
in anything smaller than a TSSOP leaded package which I believe has a 6 
mm wide body.

>> I had the impression you liked the CSP packages, but I guess not.
>
> I don't see a matter of like or dislike.  CSP sounds like a great idea
> for making stuff tiny in respectable quantities, but using CSP parts
> unfortunately seems beyond the capabilities of the small-quantity ghetto
> PCB fabs and assembly processes that I can afford to use.
>
>> If you can use the outer 12 pins only, I expect you can use this part
>> without a lot of expense.
>
> Oh that's interesting, I wonder if it's designed so that the important
> stuff is on the outer pins.  I'll check the data sheet.

That is not an unusual trick for FPGAs where they shove pins at you like 
they were free and it can take 6 layers or more to get all the pins 
routed to the outside of the footprint.  If you aren't using them all, 
just route the ones you need from the inner and outer edges and if 
ground and power are not convenient route them through unused pads.  You 
can get about half the pins from a large BGA routed without needing the 
tiny via sizes.

-- 

Rick

Thread

OT: New TI MSP430 Ultra Low Power Chip Mark Wills <markwills1970@gmail.com> - 2014-06-27 03:35 -0700
  Re: OT: New TI MSP430 Ultra Low Power Chip Paul Rubin <no.email@nospam.invalid> - 2014-06-28 09:29 -0700
    Re: OT: New TI MSP430 Ultra Low Power Chip rickman <gnuarm@gmail.com> - 2014-06-28 21:19 -0400
      Re: OT: New TI MSP430 Ultra Low Power Chip Paul Rubin <no.email@nospam.invalid> - 2014-06-28 20:57 -0700
        Re: OT: New TI MSP430 Ultra Low Power Chip bruce.mcfarling@gmail.com - 2014-06-28 22:26 -0700
          Re: OT: New TI MSP430 Ultra Low Power Chip Paul Rubin <no.email@nospam.invalid> - 2014-06-28 22:33 -0700
            Re: OT: New TI MSP430 Ultra Low Power Chip BruceMcF <bruce.mcfarling@gmail.com> - 2014-06-29 07:44 -0700
            Re: OT: New TI MSP430 Ultra Low Power Chip stephenXXX@mpeforth.com (Stephen Pelc) - 2014-06-29 14:53 +0000
              Re: OT: New TI MSP430 Ultra Low Power Chip bruce.mcfarling@gmail.com - 2014-06-29 09:04 -0700
    Re: OT: New TI MSP430 Ultra Low Power Chip albert@spenarnc.xs4all.nl (Albert van der Horst) - 2014-06-29 10:00 +0000
      Re: OT: New TI MSP430 Ultra Low Power Chip Paul Rubin <no.email@nospam.invalid> - 2014-06-29 19:16 -0700
        Re: OT: New TI MSP430 Ultra Low Power Chip rickman <gnuarm@gmail.com> - 2014-06-30 16:58 -0400
          Re: OT: New TI MSP430 Ultra Low Power Chip Paul Rubin <no.email@nospam.invalid> - 2014-06-30 14:43 -0700
            Re: OT: New TI MSP430 Ultra Low Power Chip rickman <gnuarm@gmail.com> - 2014-06-30 17:55 -0400
              Re: OT: New TI MSP430 Ultra Low Power Chip Paul Rubin <no.email@nospam.invalid> - 2014-06-30 15:34 -0700
                Re: OT: New TI MSP430 Ultra Low Power Chip rickman <gnuarm@gmail.com> - 2014-06-30 19:09 -0400
                Re: OT: New TI MSP430 Ultra Low Power Chip rickman <gnuarm@gmail.com> - 2014-06-30 19:13 -0400
                Re: OT: New TI MSP430 Ultra Low Power Chip Paul Rubin <no.email@nospam.invalid> - 2014-06-30 17:52 -0700
                Re: OT: New TI MSP430 Ultra Low Power Chip rickman <gnuarm@gmail.com> - 2014-06-30 22:20 -0400
                Re: OT: New TI MSP430 Ultra Low Power Chip Paul Rubin <no.email@nospam.invalid> - 2014-06-30 22:10 -0700
                Re: OT: New TI MSP430 Ultra Low Power Chip rickman <gnuarm@gmail.com> - 2014-07-01 04:42 -0400
                Re: OT: New TI MSP430 Ultra Low Power Chip Paul Rubin <no.email@nospam.invalid> - 2014-07-01 07:55 -0700
                Re: OT: New TI MSP430 Ultra Low Power Chip Bernd Paysan <bernd.paysan@gmx.de> - 2014-07-01 17:19 +0200
  Re: OT: New TI MSP430 Ultra Low Power Chip hughaguilar96@yahoo.com - 2014-06-29 19:49 -0700
    Re: OT: New TI MSP430 Ultra Low Power Chip Mark Wills <markwills1970@gmail.com> - 2014-06-30 01:38 -0700
      Re: OT: New TI MSP430 Ultra Low Power Chip bruce.mcfarling@gmail.com - 2014-06-30 07:22 -0700
      Re: OT: New TI MSP430 Ultra Low Power Chip hughaguilar96@yahoo.com - 2014-06-30 15:29 -0700
        Re: OT: New TI MSP430 Ultra Low Power Chip Mark Wills <markwills1970@gmail.com> - 2014-07-01 01:51 -0700
          Re: OT: New TI MSP430 Ultra Low Power Chip Andrew Haley <andrew29@littlepinkcloud.invalid> - 2014-07-01 10:26 -0500
          Re: OT: New TI MSP430 Ultra Low Power Chip hughaguilar96@yahoo.com - 2014-07-01 11:08 -0700
            Re: OT: New TI MSP430 Ultra Low Power Chip BruceMcF <agila61@netscape.net> - 2014-07-01 12:59 -0700
          Re: OT: New TI MSP430 Ultra Low Power Chip rickman <gnuarm@gmail.com> - 2014-07-01 15:02 -0400
            Re: OT: New TI MSP430 Ultra Low Power Chip BruceMcF <agila61@netscape.net> - 2014-07-01 13:02 -0700
              Re: OT: New TI MSP430 Ultra Low Power Chip hughaguilar96@yahoo.com - 2014-07-01 17:25 -0700
                Re: OT: New TI MSP430 Ultra Low Power Chip bruce.mcfarling@gmail.com - 2014-07-01 20:44 -0700
                Re: OT: New TI MSP430 Ultra Low Power Chip rickman <gnuarm@gmail.com> - 2014-07-02 12:11 -0400
                Re: OT: New TI MSP430 Ultra Low Power Chip bruce.mcfarling@gmail.com - 2014-07-02 10:19 -0700
                Re: OT: New TI MSP430 Ultra Low Power Chip rickman <gnuarm@gmail.com> - 2014-07-02 15:30 -0400
                Re: OT: New TI MSP430 Ultra Low Power Chip BruceMcF <agila61@netscape.net> - 2014-07-02 19:25 -0700
                Re: OT: New TI MSP430 Ultra Low Power Chip rickman <gnuarm@gmail.com> - 2014-07-03 00:28 -0400
                Re: OT: New TI MSP430 Ultra Low Power Chip BruceMcF <agila61@netscape.net> - 2014-07-03 00:25 -0700
                Re: OT: New TI MSP430 Ultra Low Power Chip Mark Wills <markwills1970@gmail.com> - 2014-07-03 02:17 -0700
                Re: OT: New TI MSP430 Ultra Low Power Chip bruce.mcfarling@gmail.com - 2014-07-03 09:31 -0700
                Re: OT: New TI MSP430 Ultra Low Power Chip Paul Rubin <no.email@nospam.invalid> - 2014-07-03 14:23 -0700
                Re: OT: New TI MSP430 Ultra Low Power Chip rickman <gnuarm@gmail.com> - 2014-07-03 17:53 -0400
                Re: OT: New TI MSP430 Ultra Low Power Chip Paul Rubin <no.email@nospam.invalid> - 2014-07-03 15:25 -0700
                Re: OT: New TI MSP430 Ultra Low Power Chip rickman <gnuarm@gmail.com> - 2014-07-03 19:53 -0400
                Re: OT: New TI MSP430 Ultra Low Power Chip Paul Rubin <no.email@nospam.invalid> - 2014-07-03 17:38 -0700
                Re: OT: New TI MSP430 Ultra Low Power Chip bruce.mcfarling@gmail.com - 2014-07-03 18:21 -0700
                Re: OT: New TI MSP430 Ultra Low Power Chip hughaguilar96@yahoo.com - 2014-07-04 19:14 -0700
                Re: OT: New TI MSP430 Ultra Low Power Chip bruce.mcfarling@gmail.com - 2014-07-04 22:52 -0700
                Re: OT: New TI MSP430 Ultra Low Power Chip "Rod Pemberton" <dont_use_email@xnothavet.cqm> - 2014-07-05 02:21 -0400
            Re: OT: New TI MSP430 Ultra Low Power Chip Mark Wills <markwills1970@gmail.com> - 2014-07-02 01:04 -0700
              Re: OT: New TI MSP430 Ultra Low Power Chip albert@spenarnc.xs4all.nl (Albert van der Horst) - 2014-07-02 11:59 +0000
            Re: OT: New TI MSP430 Ultra Low Power Chip m.a.m.hendrix@tue.nl - 2014-07-04 01:29 -0700
              Re: OT: New TI MSP430 Ultra Low Power Chip Mark Wills <markwills1970@gmail.com> - 2014-07-04 04:17 -0700
              Re: OT: New TI MSP430 Ultra Low Power Chip "Elizabeth D. Rather" <erather@forth.com> - 2014-07-04 09:01 -1000
                Re: OT: New TI MSP430 Ultra Low Power Chip mhx@iae.nl - 2014-07-04 22:51 -0700
                Re: OT: New TI MSP430 Ultra Low Power Chip Paul Rubin <no.email@nospam.invalid> - 2014-07-04 23:05 -0700
                Re: OT: New TI MSP430 Ultra Low Power Chip mhx@iae.nl - 2014-07-05 00:54 -0700
                Re: OT: New TI MSP430 Ultra Low Power Chip hughaguilar96@yahoo.com - 2014-07-06 17:00 -0700
                Re: OT: New TI MSP430 Ultra Low Power Chip albert@spenarnc.xs4all.nl (Albert van der Horst) - 2014-07-07 11:00 +0000
              Re: OT: New TI MSP430 Ultra Low Power Chip hughaguilar96@yahoo.com - 2014-07-04 18:54 -0700

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