Lpc2000

Hi,

>Hi,
>
>some more information: 
>1. There might be a chance of taking away 2 pins on one side if they 
>are 2 corner pins. 
>
>2. JTAG pins are also used and needed for our final testing before 
>we ship the device. There was a comment that RTCK is not needed in a 
>JTAG setup, I did confirm that this is also true for our internal 
>usage.
>  
>
Do you use/need JTAG-TRST? Given that these parts don't come out of 
reset under debug control I can't see that this pin is of much use.

Michael

>3. A redesign that would change the pin sequence is rather 
>expensive, hint, we need to sell >> 1 Mio additional devices to 
>compensate for that.
>
>4. I enjoy you all sharing my pain :-)
>
>Thanks a lot for all the feedback and I hope this also helps you all 
>to understand the restrictions we are facing when using the same 
>die, as mentioned in one of the comments, but not being able to use 
>all of the pins. 
>
>Robert
>
>
>--- In lpc2000@yahoogroups.com, "radim100" <radim100@y...> wrote:
>  
>
>>I understand that die layout dictates one pin from each side , but 
>>it is really limiting !!! Probably best 4 pin to take out would be 
>>GPIO/ANx pin since this way would remain 4 A/D and would not 
>>    
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>effect 
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>>other nice features . For example to select one of the pin from 
>>    
>>
>side
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>>PIN13 thru PIN24 is really "heart breaking" choice. I have dropped 
>>PIN18 since there is second I2c on PINS47,48 .
>>Would it be such a big deal have taken more pins on other sides 
>>    
>>
>and 
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>>rearrange internal die to pins connection ?
>>Radim
>>
>>
>>--- In lpc2000@yahoogroups.com, daedalworks@c... wrote:
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>>
>>>The question I have is why the restriction of removing one pin 
>>>      
>>>
>>from each side?  That really limits the possibilities...
>>    
>>
>>>-------------- Original message -------------- 
>>>
>>>Enter your vote today!  A new poll has been created for the 
>>>lpc2000 group:
>>>
>>>Rules:
>>>need to take off one pin from each side of the LQFP48. 
>>>JTAG pins, Vdd, Vss and UART0 pins are not an option. Try 
>>>to keep as much as possible functionality. Using these 
>>>rules please select 4 pins. Data Sheet can be found here: 
>>>http://www.standardics.philips.com/products/lpc2000/pdf/lpc
>>>2101_2102_2103.pdf
>>>Chapter 5 (Page 4) has the pinout information 
>>>
>>>  o Pin1  
>>>  o Pin2 
>>>  o Pin3 
>>>  o Pin18 
>>>  o Pin21 
>>>  o Pin22 
>>>  o Pin23 
>>>  o Pin24 
>>>  o Pin28 
>>>  o Pin29 
>>>  o Pin30 
>>>  o Pin32 
>>>  o Pin33 
>>>  o Pin34 
>>>  o Pin35 
>>>  o Pin36 
>>>  o Pin37 
>>>  o Pin38 
>>>  o Pin39 
>>>  o Pin41 
>>>  o Pin44 
>>>  o Pin45 
>>>  o Pin46 
>>>  o Pin47 
>>>  o Pin48 
>>>
>>>
>>>To vote, please visit the following web page:
>>>http://groups.yahoo.com/group/lpc2000/surveys?id=12143932 
>>>
>>>Note: Please do not reply to this message. Poll votes are 
>>>not collected via email. To vote, you must go to the Yahoo! 
>>>      
>>>
>Groups 
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>>>web site listed above.
>>>
>>>Thanks!
>>>
>>>
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>>>
>>>
>>>
>>>YAHOO! GROUPS LINKS 
>>>
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>>> To unsubscribe from this group, send an email to:
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>>>      
>>>
>>Service. 
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>>
>>>[Non-text portions of this message have been removed]
>>>      
>>>
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