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Re: gEDA-user: *QFP* footprint naming conventions


The Philips datasheet for the P89C66x microcontroller family lists them as being available in an LQFP package. It calls this a "Low Quad Flat Pack". A tray of those chips just arrived here, and they do have leads.

Indeed, the package is identical to a Xilinx XC9536 CPLD (handy, they're going into the same circuit!) whose package is called a "VQFP".

Sigh. As if it isn't bad enough that half of them have English-unit lead pitch and half of them are Metric. That makes laying out PCBs neatly a BIG pain in the posterior.

-Dave

On Tuesday, August 26, 2003, at 09:28 AM, John Griessen wrote:
I believe T is for thin, and L is for leadless.

JG

On Tue, 2003-08-26 at 06:45, Dan McMahill wrote:

  The QFP part is Quad Flat Package, but I'm not sure
about the T and L.

Thanks for your help and attention.

-Dan
--
John Griessen Cibolo Design Austin Texas
EE good at IR systems, power supplies, logic design, A2D D2A, digital amps,
mechatronics, SiGe and CMOS layout, MEMS/mech/electronic/photonic
modeling, charge pump PV/battery/fuel cell power converters, more...


--
Dave McGuire                 "You don't have Vaseline in Canada?"
St. Petersburg, FL                     -Bill Bradford