Re: [PEDA] Altera 144Pin TQFP Landing Pattern
Whilst manual routes will happily snap to any pad centres, the Protel autorouter isn't too happy about anything off a 1-mil grid. It tends to put a number of small track segments converging on the pad centre, which you'll probably want to tidy up - this takes more time than converting the metric pad positions to the nearest mil, although beware that on really small footprints the pad displacement in converting can be a significant percentage of the pad spacing (although I've yet to see any problems caused by this approach). Regards Andy Gulliver -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] Sent: 07 September 2001 00:17 To: Protel EDA Forum Subject: Re: [PEDA] Altera 144Pin TQFP Landing Pattern [cut] I have an additional question. It looks like QFP footprints generally are created with metric grids. Will I run into trouble when I use metric footprints on an imperial grid board? It seems like I remember forum posts on this issue, but I can't remember what the stink was about. Thanks again, Steve Allen * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * To post a message: mailto:[EMAIL PROTECTED] * * To leave this list visit: * http://www.techservinc.com/protelusers/leave.html * * Contact the list manager: * mailto:[EMAIL PROTECTED] * * Forum Guidelines Rules: * http://www.techservinc.com/protelusers/forumrules.html * * Browse or Search previous postings: * http://www.mail-archive.com/proteledaforum@techservinc.com * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
Re: [PEDA] Altera 144Pin TQFP Landing Pattern
You could try making a footprint with my footprint generator in imperial mode. The problem here is that Altera only specifies Metric obviously, the pin-pin spacing still doesn't fall on every mil. Brian Guralnick - Original Message - From: [EMAIL PROTECTED] To: Protel EDA Forum [EMAIL PROTECTED] Sent: Thursday, September 06, 2001 7:17 PM Subject: Re: [PEDA] Altera 144Pin TQFP Landing Pattern | All, | Thanks for responding. It looks like I have several paths to explore. | | 1. I was able to get IPC's website footprint generation tool to spit out a | footprint. | 2. Brian Gurlanick's QFP generator. | 3. Michael Scmitt provided a footprint he uses for the Altera part I'm using. | | I have an additional question. It looks like QFP footprints generally are | created with metric grids. Will I run into trouble when I use metric | footprints on an imperial grid board? | | It seems like I remember forum posts on this issue, but I can't remember what | the stink was about. | | Thanks again, | Steve Allen | | | * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * To post a message: mailto:[EMAIL PROTECTED] * * To leave this list visit: * http://www.techservinc.com/protelusers/leave.html * * Contact the list manager: * mailto:[EMAIL PROTECTED] * * Forum Guidelines Rules: * http://www.techservinc.com/protelusers/forumrules.html * * Browse or Search previous postings: * http://www.mail-archive.com/proteledaforum@techservinc.com * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
Re: [PEDA] Altera 144Pin TQFP Landing Pattern
[EMAIL PROTECTED] wrote: All, Thanks for responding. It looks like I have several paths to explore. 1. I was able to get IPC's website footprint generation tool to spit out a footprint. 2. Brian Gurlanick's QFP generator. 3. Michael Scmitt provided a footprint he uses for the Altera part I'm using. I have an additional question. It looks like QFP footprints generally are created with metric grids. Will I run into trouble when I use metric footprints on an imperial grid board? The autorouter (and sometimes manual routeing, too) has a problem when there are many different grids on the same board. It doesn't cause any specific problem with a metric/imperial grid, just that they are different. Jon * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * To post a message: mailto:[EMAIL PROTECTED] * * To leave this list visit: * http://www.techservinc.com/protelusers/leave.html * * Contact the list manager: * mailto:[EMAIL PROTECTED] * * Forum Guidelines Rules: * http://www.techservinc.com/protelusers/forumrules.html * * Browse or Search previous postings: * http://www.mail-archive.com/proteledaforum@techservinc.com * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
Re: [PEDA] Altera 144Pin TQFP Landing Pattern
You can set the grid in the lib. to be metric and when done adjusting the part switch it to a imperial grid and save it. The translation is made when you switch the grids. Ted -Original Message- From: Jon Elson [mailto:[EMAIL PROTECTED]] Sent: Friday, September 07, 2001 2:17 PM To: Protel EDA Forum Subject: Re: [PEDA] Altera 144Pin TQFP Landing Pattern [EMAIL PROTECTED] wrote: All, Thanks for responding. It looks like I have several paths to explore. 1. I was able to get IPC's website footprint generation tool to spit out a footprint. 2. Brian Gurlanick's QFP generator. 3. Michael Scmitt provided a footprint he uses for the Altera part I'm using. I have an additional question. It looks like QFP footprints generally are created with metric grids. Will I run into trouble when I use metric footprints on an imperial grid board? The autorouter (and sometimes manual routeing, too) has a problem when there are many different grids on the same board. It doesn't cause any specific problem with a metric/imperial grid, just that they are different. Jon * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * To post a message: mailto:[EMAIL PROTECTED] * * To leave this list visit: * http://www.techservinc.com/protelusers/leave.html * * Contact the list manager: * mailto:[EMAIL PROTECTED] * * Forum Guidelines Rules: * http://www.techservinc.com/protelusers/forumrules.html * * Browse or Search previous postings: * http://www.mail-archive.com/proteledaforum@techservinc.com * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
Re: [PEDA] Altera 144Pin TQFP Landing Pattern
Playing with the electrical grid so that it's 125% of the regular grid works great for me. I always seem to catch the center of the pins this way even when I have an Imperial grid board with these metric TQFPs. Brian Guralnick - Original Message - From: Jon Elson [EMAIL PROTECTED] To: Protel EDA Forum [EMAIL PROTECTED] Sent: Friday, September 07, 2001 3:17 PM Subject: Re: [PEDA] Altera 144Pin TQFP Landing Pattern | | | [EMAIL PROTECTED] wrote: | | All, | Thanks for responding. It looks like I have several paths to explore. | | 1. I was able to get IPC's website footprint generation tool to spit out a | footprint. | 2. Brian Gurlanick's QFP generator. | 3. Michael Scmitt provided a footprint he uses for the Altera part I'm using. | | I have an additional question. It looks like QFP footprints generally are | created with metric grids. Will I run into trouble when I use metric | footprints on an imperial grid board? | | The autorouter (and sometimes manual routeing, too) has a problem | when there are many different grids on the same board. It doesn't cause | any specific problem with a metric/imperial grid, just that they are different. | | Jon | | * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * To post a message: mailto:[EMAIL PROTECTED] * * To leave this list visit: * http://www.techservinc.com/protelusers/leave.html * * Contact the list manager: * mailto:[EMAIL PROTECTED] * * Forum Guidelines Rules: * http://www.techservinc.com/protelusers/forumrules.html * * Browse or Search previous postings: * http://www.mail-archive.com/proteledaforum@techservinc.com * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
Re: [PEDA] Altera 144Pin TQFP Landing Pattern
No Problem, i can send it to you, we use this device so the footprint is very well tested :-) If you want contact me. Dipl.-Ing. (FH) Michael Schmitt Baumer Ident GmbH Entwicklung / Development Department Hertzstr. 10 D-69469 Weinheim Deutschland / Germany Tel. +49 (0) 6201 9957 - 30 Fax. +49 (0) 6201 9957 - 99 E-Mail : [EMAIL PROTECTED] Web: http://www.baumerident.com [EMAIL PROTECTED] schrieb: Hi, I need a landing pattern for Altera p/n EP1K30TC144-2. The package is a 144 Pin TQFP package. I typically use the recommended landing pattern from the manufacturer; however, Altera only provides the physical dimensions of the part itself. I attempted to use the land pattern calculator, on the IPC website, using these dimensions, but the pad size was clearly calculated incorrectly (one dimension of the pad was the width of the entire part). At this point, I think I'll return to the IPC website to isolate my problem. I'd appreciate learning how others handle this situation. Thanks, Steve Allen -- * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * To post a message: mailto:[EMAIL PROTECTED] * * To leave this list visit: * http://www.techservinc.com/protelusers/leave.html * * Contact the list manager: * mailto:[EMAIL PROTECTED] * * Forum Guidelines Rules: * http://www.techservinc.com/protelusers/forumrules.html * * Browse or Search previous postings: * http://www.mail-archive.com/proteledaforum@techservinc.com * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
Re: [PEDA] Altera 144Pin TQFP Landing Pattern
Michael Schmitt wrote: No Problem, i can send it to you, we use this device so the footprint is very well tested :-) But, watch out for pin 1 orinetation. I just had to redo a board, because I forgot to check that. Some chips have pin 1 in the middle of a side, some at a corner. Some also have clockwise numbering for cavity-down packages. Jon * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * To post a message: mailto:[EMAIL PROTECTED] * * To leave this list visit: * http://www.techservinc.com/protelusers/leave.html * * Contact the list manager: * mailto:[EMAIL PROTECTED] * * Forum Guidelines Rules: * http://www.techservinc.com/protelusers/forumrules.html * * Browse or Search previous postings: * http://www.mail-archive.com/proteledaforum@techservinc.com * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
Re: [PEDA] Altera 144Pin TQFP Landing Pattern
[PEDA] Altera 144Pin TQFP Landing Pattern
Re: [PEDA] Altera 144Pin TQFP Landing Pattern
Use my QFP generator, just enter the dimensions provided in Altera's Device Package Catalog. Sites: Altera package specs - http://www.altera.com/literature/ds/dspkg.pdf Just copy this link location into your internet explorer address bar: ftp://ftp.point-lab.com/quartus/Public/ProtelUsers/ Take these 2 files: QFPfootprintGeneratorScript.bas - Protel ClientBasic script. QFPfootprintGeneratorScript.txt - added documentation. enter: 36, 22, 0, 36, 22, 0.5, 0.27, 0.75, 1, 2, 0.04, 0 for Altera's 144 pin TQFP If you want a thinner footprint, minimal pad meat, change: 0.27 - 0.22 0.75 - 0.60 Goodluck. Brian Guralnick - Original Message - From: [EMAIL PROTECTED] To: Protel EDA Forum [EMAIL PROTECTED] Sent: Wednesday, September 05, 2001 4:21 PM Subject: [PEDA] Altera 144Pin TQFP Landing Pattern | Hi, | | I need a landing pattern for Altera p/n EP1K30TC144-2. The package is a 144 | Pin TQFP package. | | I typically use the recommended landing pattern from the manufacturer; | however, Altera only provides the physical dimensions of the part itself. I | attempted to use the land pattern calculator, on the IPC website, using these | dimensions, but the pad size was clearly calculated incorrectly (one | dimension of the pad was the width of the entire part). | | At this point, I think I'll return to the IPC website to isolate my problem. | I'd appreciate learning how others handle this situation. | | Thanks, | Steve Allen | | | | * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * To post a message: mailto:[EMAIL PROTECTED] * * To leave this list visit: * http://www.techservinc.com/protelusers/leave.html * * Contact the list manager: * mailto:[EMAIL PROTECTED] * * Forum Guidelines Rules: * http://www.techservinc.com/protelusers/forumrules.html * * Browse or Search previous postings: * http://www.mail-archive.com/proteledaforum@techservinc.com * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
