New mega324 warning.

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sparrow2
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Posted by sparrow2: Mon. Jan 4, 2016 - 12:06 PM
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Just fast info.

 

There will come a new mega324 called mega324PB, this is a new design, and will have same problem than some new 328 (and similar),  Atmel call it a 20 MHz chip, but there is NO way to run it faster than 16MHz unless you give it an external clk!!!!

And it only have a low power crystal swing. (so problems with industrial applications).

 

On the good side it will have 3 usart's and extra things here an there, but the normal warning, the datasheet are full of errors. (the one that made additions for sure don't know anything about the chip, why don't they have someone do proofreading before it become public.) 

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AVR Microcontrollers, megaAVR and tinyAVR
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theusch
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Posted by theusch: Mon. Jan 4, 2016 - 02:14 PM
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sparrow2 wrote:
Just fast info.

Do you have anything specific other than what was discussed earlier?

https://www.avrfreaks.net/comment...

You can put lipstick on a pig, but it is still a pig.

I've never met a pig I didn't like, as long as you have some salt and pepper.

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sparrow2
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Posted by sparrow2: Mon. Jan 4, 2016 - 02:48 PM
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yes :

 

http://www.atmel.com/devices/atm...

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theusch
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Posted by theusch: Mon. Jan 4, 2016 - 03:07 PM
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lol -- my bad:  I read your post as "328", and indeed there is now the "324" rev. A datasheet posted.

 

As a guess, the PB will share the "features", be it '328 or '324 or ... 

 

This slideshow is kind of interesting:

http://downloads.codico.com/misc...

 

Extra timers and USART?  In the '324:

 

... and on the '328PB (rev. C datasheet):

You can put lipstick on a pig, but it is still a pig.

I've never met a pig I didn't like, as long as you have some salt and pepper.

Last Edited: Mon. Jan 4, 2016 - 03:16 PM
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sparrow2
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Posted by sparrow2: Mon. Jan 4, 2016 - 03:17 PM
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again biggest problem no osc above 16 MHz, and only low power mode.

an higher current (That I don't care about, bad for batt. operated things.)

 

others will like things like unique number, and a 3. USART, and some other things. 

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Koshchi
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Posted by Koshchi: Mon. Jan 4, 2016 - 05:19 PM
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Atmel call it a 20 MHz chip, but there is NO way to run it faster than 16MHz unless you give it an external clk!!!!

How is that different than any other AVR (other than xmegas)?

Regards,
Steve A.

The Board helps those that help themselves.

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theusch
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Posted by theusch: Mon. Jan 4, 2016 - 05:25 PM
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Koshchi wrote:
How is that different than any other AVR (other than xmegas)?

If you look at the thread linked above, it will become clearer.  In this context, "external clock" is true single-pin clock source, and a 20MHz crystal that many know and love isn't spec'ed/doesn't work. (In addition, no "full swing" available--might have ramifications down the line.)

 

So only "low power" crystal...

 

 

You can put lipstick on a pig, but it is still a pig.

I've never met a pig I didn't like, as long as you have some salt and pepper.

Last Edited: Mon. Jan 4, 2016 - 05:26 PM
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sparrow2
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Posted by sparrow2: Mon. Jan 4, 2016 - 07:56 PM (Reply to #6)
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A "normal" 20MHz AVR you just give a 20MHz crystal and enable the full swing osc.
 

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vertamps
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Posted by vertamps: Mon. Jan 4, 2016 - 08:17 PM
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Three 16 bit timers!? Please come in a dip package for us hobbyist. Surface mount soldering isn't out of my abilities though. 

~William

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theusch
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Posted by theusch: Mon. Jan 4, 2016 - 08:32 PM
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vertamps wrote:
Please come in a dip package for us hobbyist.

Did you take the time to glance at Ordering Information/Packaging Information in the datasheet?  Or skim the link(s) to prior PB discussions?

You can put lipstick on a pig, but it is still a pig.

I've never met a pig I didn't like, as long as you have some salt and pepper.

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vertamps
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Posted by vertamps: Mon. Jan 4, 2016 - 08:45 PM (Reply to #10)
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No, did post in my excitement without thinking. 

~William

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valusoft
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Posted by valusoft: Tue. Jan 5, 2016 - 01:47 AM
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A case of "premature exultation" perhaps?

 

Ross McKenzie ValuSoft Melbourne Australia

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DocJC
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Posted by DocJC: Tue. Jan 5, 2016 - 02:33 AM
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Perhaps the web based Atmel micro product selector will get updated to include a column for "External Xtal Option", (Y/N).

 

JC

 

 

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gchapman
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Posted by gchapman: Wed. Jul 5, 2017 - 09:12 PM
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Updated datasheet :

http://www.microchip.com/mymicrochip/NotificationDetails.aspx?pcn=SYST-30WPRX542

 

"Dare to be naïve." - Buckminster Fuller

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sparrow2
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Posted by sparrow2: Sat. Jul 8, 2017 - 08:34 AM (Reply to #14)
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It's nice.

And it make me wonder if Atmel still would have existed if they had take documentation serious.   

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