{"id":6642,"date":"2025-11-18T15:57:48","date_gmt":"2025-11-18T07:57:48","guid":{"rendered":"https:\/\/www.lxbchip.com\/?post_type=product&#038;p=6642"},"modified":"2026-01-29T18:57:34","modified_gmt":"2026-01-29T10:57:34","slug":"xc4vlx25-10ffg668c","status":"publish","type":"product","link":"https:\/\/www.lxbchip.com\/vi\/products\/xc4vlx25-10ffg668c\/","title":{"rendered":"XC4VLX25-10FFG668C"},"content":{"rendered":"<table id=\"table_1\" class=\"scroll display nowrap data-t data-t wpDataTable wpDataTableID-8 dataTable\" data-described-by=\"table_1_desc\" data-wpdatatable_id=\"8\" aria-describedby=\"table_1_info\">\n<thead>\n<tr>\n<th class=\"wdtheader sort expand column-modelpn sorting\" tabindex=\"0\" colspan=\"1\" rowspan=\"1\" data-class=\"expand\" aria-controls=\"table_1\" aria-label=\" M\u1eabu P\/N ch\u01b0a x\u00e1c \u0111\u1ecbnh\">M\u00c3 S\u1ea2N PH\u1ea8M<\/th>\n<th class=\"wdtheader sort column-series sorting\" tabindex=\"0\" colspan=\"1\" rowspan=\"1\" aria-controls=\"table_1\" aria-label=\" Seriesundefined\">B\u1ed8 PHIM<\/th>\n<th class=\"wdtheader sort numdata float column-numberoflabsclbs sorting\" tabindex=\"0\" colspan=\"1\" rowspan=\"1\" aria-controls=\"table_1\" aria-label=\" S\u1ed1 l\u01b0\u1ee3ng LABs\/CLBsundefined\">S\u1ed0 L\u01af\u1ee2NG PH\u00d2NG TH\u00cd NGHI\u1ec6M\/CLBS<\/th>\n<th class=\"wdtheader sort numdata float column-speedgrade sorting\" tabindex=\"0\" colspan=\"1\" rowspan=\"1\" aria-controls=\"table_1\" aria-label=\" T\u1ed1c \u0111\u1ed9 Gradeundefined\">\u0110\u1ed8 B\u1ec0N THEO T\u1ed0C \u0110\u1ed8<\/th>\n<th class=\"wdtheader sort column-numberoflogicelementscells sorting\" tabindex=\"0\" colspan=\"1\" rowspan=\"1\" aria-controls=\"table_1\" aria-label=\" S\u1ed1 l\u01b0\u1ee3ng c\u00e1c ph\u1ea7n t\u1eed logic \/ \u00f4 kh\u00f4ng x\u00e1c \u0111\u1ecbnh\">S\u1ed0 L\u01af\u1ee2NG PH\u1ea6N T\u1eec L\u1ed0I \/ T\u1ebe B\u00c0O<\/th>\n<th class=\"wdtheader sort column-totalrambits sorting\" tabindex=\"0\" colspan=\"1\" rowspan=\"1\" aria-controls=\"table_1\" aria-label=\" T\u1ed5ng s\u1ed1 bit RAM ch\u01b0a \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a\">T\u1ed5ng s\u1ed1 bit RAM<\/th>\n<th class=\"wdtheader sort numdata integer column-numberofio sorting sorting_asc\" tabindex=\"0\" colspan=\"1\" rowspan=\"1\" aria-controls=\"table_1\" aria-label=\" S\u1ed1 l\u01b0\u1ee3ng I\/O kh\u00f4ng x\u00e1c \u0111\u1ecbnh\" aria-sort=\"ascending\">S\u1ed0 L\u01af\u1ee2NG I\/O<\/th>\n<th class=\"wdtheader sort column-voltagesupply sorting\" tabindex=\"0\" colspan=\"1\" rowspan=\"1\" aria-controls=\"table_1\" aria-label=\" \u0110i\u1ec7n \u00e1p - Ngu\u1ed3n cung c\u1ea5p ch\u01b0a x\u00e1c \u0111\u1ecbnh\">\u0110i\u1ec7n \u00e1p \u2013 Ngu\u1ed3n c\u1ea5p<\/th>\n<th class=\"wdtheader sort column-mountingtype sorting\" tabindex=\"0\" colspan=\"1\" rowspan=\"1\" aria-controls=\"table_1\" aria-label=\" Lo\u1ea1i l\u1eafp \u0111\u1eb7t ch\u01b0a x\u00e1c \u0111\u1ecbnh\">Lo\u1ea1i l\u1eafp \u0111\u1eb7t<\/th>\n<th class=\"wdtheader sort column-operatingtemperature sorting\" tabindex=\"0\" colspan=\"1\" rowspan=\"1\" aria-controls=\"table_1\" aria-label=\" Nhi\u1ec7t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng: Ch\u01b0a x\u00e1c \u0111\u1ecbnh\">NHI\u1ec6T \u0110\u1ed8 HO\u1ea0T \u0110\u1ed8NG<\/th>\n<th class=\"wdtheader sort column-packagecase sorting\" tabindex=\"0\" colspan=\"1\" rowspan=\"1\" aria-controls=\"table_1\" aria-label=\" G\u00f3i \/ V\u1ecf h\u1ed9p\">G\u00d3I \/ H\u1ed8P<\/th>\n<th class=\"wdtheader sort column-supplierdevicepackage sorting\" tabindex=\"0\" colspan=\"1\" rowspan=\"1\" aria-controls=\"table_1\" aria-label=\" G\u00f3i thi\u1ebft b\u1ecb nh\u00e0 cung c\u1ea5p (kh\u00f4ng x\u00e1c \u0111\u1ecbnh)\">G\u00d3I THI\u1ebeT B\u1eca C\u1ee6A NH\u00c0 CUNG C\u1ea4P<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr class=\"odd\">\n<td class=\"expand column-modelpn\">XC4VLX25-10FFG668C<\/td>\n<td class=\"column-series\">Virtex-4 SX<\/td>\n<td class=\"numdata float column-numberoflabsclbs\">2.688,00<\/td>\n<td class=\"numdata float column-speedgrade\">0,00<\/td>\n<td class=\"column-numberoflogicelementscells\">24192 Th\u00e0nh ph\u1ea7n logic<\/td>\n<td class=\"column-totalrambits\">1.327.104 bit<\/td>\n<td class=\"numdata integer column-numberofio sorting_1\">448<\/td>\n<td class=\"column-voltagesupply\">1,14 V ~ 1,26 V<\/td>\n<td class=\"column-mountingtype\">L\u1eafp \u0111\u1eb7t b\u1ec1 m\u1eb7t<\/td>\n<td class=\"column-operatingtemperature\">Th\u01b0\u01a1ng m\u1ea1i (0\u00b0C ~ +85\u00b0C)<\/td>\n<td class=\"column-packagecase\">668-BBGA, FCBGA<\/td>\n<td class=\"column-supplierdevicepackage\">668-FCBGA (27\u00d727)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p data-path-to-node=\"3\"><span style=\"color: #003366;\"><strong>XC4VLX25-10FFG668C: Virtex-4 LX Logic-Optimized FPGA<\/strong><\/span><\/p>\n<p data-path-to-node=\"4\">The <b data-path-to-node=\"4\" data-index-in-node=\"4\">XC4VLX25-10FFG668C<\/b> is a fundamental component of the Xilinx Virtex-4 LX platform, designed specifically for logic-intensive applications. Built on a 90nm process using triple-oxide technology, the LX series balances high logic density with managed power consumption.<\/p>\n<p data-path-to-node=\"5\">The <b data-path-to-node=\"5\" data-index-in-node=\"4\">-10 speed grade<\/b> v\u00e0 <b data-path-to-node=\"5\" data-index-in-node=\"24\">Commercial temperature rating<\/b> make this part an ideal fit for high-performance networking, medical imaging backplanes, and industrial automation controllers that require stable, high-speed logic without the overhead of the SX (DSP-heavy) or FX (embedded PowerPC) variants.<\/p>\n<p data-path-to-node=\"6\"><strong><span style=\"color: #003366;\">Essential Technical Specifications<\/span><\/strong><\/p>\n<ul data-path-to-node=\"7\">\n<li>\n<p data-path-to-node=\"7,0,0\"><b data-path-to-node=\"7,0,0\" data-index-in-node=\"0\">T\u1ebf b\u00e0o logic:<\/b> 24,192<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"7,1,0\"><b data-path-to-node=\"7,1,0\" data-index-in-node=\"0\">CLB Array:<\/b> 48 x 72<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"7,2,0\"><b data-path-to-node=\"7,2,0\" data-index-in-node=\"0\">Total Block RAM:<\/b> 1,296 Kb<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"7,3,0\"><b data-path-to-node=\"7,3,0\" data-index-in-node=\"0\">DSP48 Slices:<\/b> 48<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"7,4,0\"><b data-path-to-node=\"7,4,0\" data-index-in-node=\"0\">Maximum User I\/O:<\/b> 448<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"7,5,0\"><b data-path-to-node=\"7,5,0\" data-index-in-node=\"0\">G\u00f3i:<\/b> FFG668 (Flip-Chip BGA, Lead-Free\/RoHS)<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"7,6,0\"><b data-path-to-node=\"7,6,0\" data-index-in-node=\"0\">\u0110\u00e1nh gi\u00e1 t\u1ed1c \u0111\u1ed9:<\/b> -10<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"7,7,0\"><b data-path-to-node=\"7,7,0\" data-index-in-node=\"0\">Nhi\u1ec7t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng:<\/b> 0\u00b0C \u0111\u1ebfn +85\u00b0C (D\u00f9ng trong th\u01b0\u01a1ng m\u1ea1i)<\/p>\n<\/li>\n<\/ul>\n<p data-path-to-node=\"8\"><span style=\"color: #003366;\"><strong>Design &amp; Integration Insights<\/strong><\/span><\/p>\n<p data-path-to-node=\"9\">When designing with or sourcing the LX25 in the FFG668 package, several architectural nuances should be considered:<\/p>\n<ul data-path-to-node=\"10\">\n<li>\n<p data-path-to-node=\"10,0,0\"><b data-path-to-node=\"10,0,0\" data-index-in-node=\"0\">SelectIO Technology:<\/b> This device supports multiple I\/O standards (LVDS, HSTL, SSTL). Designers should pay close attention to the banking rules\u2014specifically, ensuring that the <span class=\"math-inline\" data-math=\"V_{CCO}\" data-index-in-node=\"175\">$V_{CCO}$<\/span> of a given bank is compatible with all I\/O standards assigned to that bank to avoid signal integrity issues.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"10,1,0\"><b data-path-to-node=\"10,1,0\" data-index-in-node=\"0\">Clock Management:<\/b> The Virtex-4 LX features highly flexible Digital Clock Managers (DCMs). For the -10 speed grade, ensure your timing constraints in ISE account for the specific jitter and setup\/hold requirements documented in the DS302 datasheet.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"10,2,0\"><b data-path-to-node=\"10,2,0\" data-index-in-node=\"0\">Thermal Design:<\/b> The Flip-Chip (FFG) package offers lower thermal resistance than traditional wire-bond BGAs. However, even at a -10 grade, high logic utilization at high frequencies can lead to significant localized heating. We recommend verifying junction temperature (<span class=\"math-inline\" data-math=\"T_j\" data-index-in-node=\"270\">$T_j$<\/span>) through thermal simulation if your design exceeds 70% logic utilization.<\/p>\n<\/li>\n<\/ul>\n<p data-path-to-node=\"17\"><strong><span style=\"color: #003366;\">Hardware Engineer FAQ<\/span><\/strong><\/p>\n<p data-path-to-node=\"18\"><b data-path-to-node=\"18\" data-index-in-node=\"0\">Is the XC4VLX25-10FFG668C pin-compatible with larger Virtex-4 LX devices?<\/b><\/p>\n<p data-path-to-node=\"18\">Yes, the FFG668 package allows for footprint compatibility with the XC4VLX40 and XC4VLX60 in some configurations, permitting a migration path if your logic requirements grow. Always cross-reference the pinout tables to ensure bank-compatible power pins.<\/p>\n<p data-path-to-node=\"19\"><b data-path-to-node=\"19\" data-index-in-node=\"0\">How should I handle the lead-free (FFG) soldering profile?<\/b><\/p>\n<p data-path-to-node=\"19\">Since this is a Lead-Free (RoHS) FFG668 package, you must follow a SAC305-compatible reflow profile. Avoid using leaded solder pastes if you require full RoHS compliance for your final assembly.<\/p>\n<p data-path-to-node=\"20\"><b data-path-to-node=\"20\" data-index-in-node=\"0\">What is the status of the &#8220;Silicon Stepping&#8221; for this part?<\/b><\/p>\n<p data-path-to-node=\"20\">We supply the latest production steppings. For engineers performing FFF (Form, Fit, Function) replacements on older Rev A or B boards, please verify if your existing bitstream requires a &#8220;Stepping-specific&#8221; update via ISE.<\/p>\n<p data-path-to-node=\"23\"><a href=\"https:\/\/www.lxbchip.com\/vi\/contact-us\/\">Li\u00ean h\u1ec7 v\u1edbi LXB Semicon<\/a>\u00a0for availability, pricing, and technical support.<\/p>","protected":false},"excerpt":{"rendered":"<p><strong>Nh\u00e0 s\u1ea3n xu\u1ea5t:<\/strong> Xilinx<br \/>\n<strong>T\u1ebf b\u00e0o logic:<\/strong> 24,576<br \/>\n<strong>C\u00e1c l\u00e1t c\u1eaft logic:<\/strong> 1,536<br \/>\n<strong>B\u1ed9 nh\u1edb RAM t\u00edch h\u1ee3p (eRAM):<\/strong> 1,105,920 bits<br \/>\n<strong>G\u00f3i:<\/strong> FFG668<br \/>\n<strong>Nhi\u1ec7t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng:<\/strong> Th\u01b0\u01a1ng m\u1ea1i (0\u00b0C \u0111\u1ebfn +85\u00b0C)<\/p>","protected":false},"featured_media":6114,"template":"","meta":{"_acf_changed":false,"jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"product_brand":[],"product_cat":[21],"product_tag":[],"class_list":{"0":"post-6642","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-xilinx","8":"first","9":"instock","10":"shipping-taxable","11":"product-type-simple"},"acf":[],"aioseo_notices":[],"jetpack_publicize_connections":[],"_links":{"self":[{"href":"https:\/\/www.lxbchip.com\/vi\/wp-json\/wp\/v2\/product\/6642","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lxbchip.com\/vi\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.lxbchip.com\/vi\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.lxbchip.com\/vi\/wp-json\/wp\/v2\/media\/6114"}],"wp:attachment":[{"href":"https:\/\/www.lxbchip.com\/vi\/wp-json\/wp\/v2\/media?parent=6642"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.lxbchip.com\/vi\/wp-json\/wp\/v2\/product_brand?post=6642"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.lxbchip.com\/vi\/wp-json\/wp\/v2\/product_cat?post=6642"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.lxbchip.com\/vi\/wp-json\/wp\/v2\/product_tag?post=6642"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}