Mr. Gopal,
To use manufacturer's component/footprint libraries imported into Protel is quite misleading for any board >designer. One should always get the latest
footprint from the manufacturer and use Protel to create the footprint. If you are rushing to finish a project >and are using outdated footprints
from the component libraries provided by Protel then good luck.
Small correction,
You should use my footprint generator, not Protel's. Protel's footprint generator does not use the IC manufacturer's exact measurement data from their data sheet. Doing the corrective mat on your own can lead to mistakes. My footprint generator uses the exact dimensions from the manufacturer's data sheets.
Get it here: http://www.proteluser.com/showthread.php?t=17
Download the .zip.
It's in the .ddb: -> /scripts/QFPfootprintgeneratorscript.bas => generates a QFP, or, TSOP footprint in PCB LIBRARY
For Protel 98,99,99se only.
________ Brian G.
----- Original Message ----- From: "Al-hamra Huq" <[EMAIL PROTECTED]>
To: "Protel EDA Discussion List" <[email protected]>
Sent: Tuesday, February 01, 2005 2:35 PM
Subject: [PEDA] RE: 64 TIFF
Mr. Gopal,
To use manufacturer's component/footprint libraries imported into Protel is quite misleading for any board designer. One should always get the latest
footprint from the manufacturer and use Protel to create the footprint. If you are rushing to finish a project and are using outdated footprints
from the component libraries provided by Protel then good luck.
Here is a link for the Atmega169 chip. http://www.atmel.com/dyn/resources/prod_documents/2514S.pdf
The package and footprint land pattern is on page 15 to page 18.
Regards,
Al-hamra Huq
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Gopalakrishnan Narayanan Sent: Tuesday, February 01, 2005 11:24 AM To: [email protected] Subject: [PEDA] 64 TQFP
Hello i have just started using protel99se and I got a problem.I am making a pcb for atmega169 which says it is 14mm*14mm 64 pin 1mm height etc.But when looking for footprint protel has 3 types of 64pin TQFp with QFP14*14-G64/N QFP14*14-G64/N/Y1.9N QFP14*14-G64/N/Y1.55N can somebody explain the difference between them. Thank you Regards Gopal
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