Customer Update XCU010001 Re: XC1800 Series New Marking for XC1800 Series Devices Xilinx Incorporated will institute new ordering part numbers for production versions of its XC1800 Series of In-System Programmable Configuration PROMs. The new ordering part numbers will incorporate the letter "V" and will appear as XC18Vxx. All other information (i.e. lot code, date code, etc.) will stay the same. This is not a form, fit, or function change; this is a topmark change only. This change will only affect production parts, not engineering samples (ES). Below is a comparison of an ES part ordering part number vs. the new production part ordering part number. ES Part Ordering Information XC1804 VQ44 CES Device Number Package Type Operating Range / Processing XC1804 VQ44 = 44-Pin Plastic Quad Flat Package CES = Commercial Engineering Sample XC1802 PC44 = 44-Pin Plastic Chip Carrier XC1801 SO20 = 20-Pin Small-Outline Package XC18512 PC20 = 20-Pin Plastic Leaded Chip Carrier XC18256 XC18128 Production Part Ordering Information XC18V04 VQ44 C Device Number Package Type Operating Range / Processing XC18V04 VQ44 = 44-Pin Plastic Quad Flat Package C = Commercial (Ta = 0° to +70°C) XC18V02 PC44 = 44-Pin Plastic Chip Carrier I = Industrial (Ta = -40°C to +85°C) XC18V01 SO20 = 20-Pin Small-Outline Package XC18V512 PC20 = 20-Pin Plastic Leaded Chip Carrier XC18V256 XC18V128 If you have any questions regarding this advisory, please contact your local Xilinx Sales Representative.

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