{"product_id":"ep4ce15f23-fpga-core-board","title":"EP4CE15F23 FPGA Core Board","description":"\u003ch3\u003eWhat is it?\u003c\/h3\u003e\u003cp\u003eThe \u003cstrong\u003eEP4CE15F23 FPGA Core Board\u003c\/strong\u003e is a breakout board based on the \u003cstrong\u003eAltera EP4CE15F23\u003c\/strong\u003e FPGA chip. It is pin-compatible with the original QMTECH EP4CE15 version, making it a drop-in replacement for retro computer projects and FPGA experiments that previously relied on the QMTECH board.\u003c\/p\u003e\u003ch3\u003eWhy did you make it?\u003c\/h3\u003e\u003cp\u003eIn early 2024, QMTECH discontinued their EP4CE15 FPGA core board, leaving many ongoing projects without a compatible hardware source. With QMTECH's permission, this board was redesigned from scratch as a \u003cstrong\u003e4-layer PCB\u003c\/strong\u003e to extend the life of those projects and keep the community moving forward.\u003c\/p\u003e\u003ch3\u003eWhat makes it special?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQMTECH pin-compatible\u003c\/strong\u003e — drop-in replacement for existing EP4CE15-based designs and carrier boards\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEqual-length trace routing\u003c\/strong\u003e — all signal lines from the FPGA chip to the pin headers are length-matched for signal integrity\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4-layer PCB design\u003c\/strong\u003e — improved power delivery and reduced noise compared to 2-layer alternatives\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAltera EP4CE15F23\u003c\/strong\u003e — 15K logic elements, suitable for retro CPU cores, soft processors, and digital logic projects\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommunity-driven\u003c\/strong\u003e — designed to keep existing open-source retro projects alive and accessible\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eExternal Links\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e\u003ca href=\"https:\/\/github.com\/denjhang\/QM-EP4CE15F23-github\"\u003eGitHub: denjhang\/QM-EP4CE15F23\u003c\/a\u003e\u003c\/li\u003e\u003c\/ul\u003e","brand":"Denjhang's Retro Hardware","offers":[{"title":"Default Title","offer_id":46123514986693,"sku":null,"price":139.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/8507\/1813\/files\/2025-04-10T04_05_41.783Z-sshot-20250410-120440.jpg?v=1777002184","url":"https:\/\/denjhang.myshopify.com\/products\/ep4ce15f23-fpga-core-board","provider":"Denjhang's Retro Hardware","version":"1.0","type":"link"}