Isn't it the other way? -- that the Microchip docs state that a PARALLEL-cut crystal is required as a series cut may cause incorrect timing? Cheers, -Neil. -----Original Message----- From: Sent: Friday, June 14, 2002 9:47 AM Subject: Re: [PIC]: Will an unprogrammed chip oscillate? Series cut .. Parallel cut - How does one figure out which applies to the crystal in question. I just looked at EVERY crystal in Digikey, and NONE (i.e. diddlysquat, Nada, Nichts, Nyet, Zip, Zilcho) specify whether the crystal is parallel or serial cut. Now there are a few that allude to "When run in parallel mode.." "Effective series resistance" And one has a whole paragraph of rubber language which basically says "Your Mileage May Vary" when run in parallel or series mode, but none of them just come right out and say one or the other. I guess the correct method is to use a CRYSTAL ball. --Lawrence ----- Original Message ----- From: "Brendan Moran" To: Sent: Thursday, June 13, 2002 5:33 PM Subject: Re: [PIC]: Will an unprogrammed chip oscillate? -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body