https://stream.echo6.co/videos/watch/9d3853fe-c239-45e0-b5d6-00265e8b105a When does PCB propagation delay matter in PCB layout? Dave goes down the rabbit hole from DIY TTL processor design to DDR memory design and layout. DDR memory termination. What is a timing budget? When is it important? How does signal integrity matter? When do you have to do serpentine PCB traces to match trace and differential pair lengths? Micron DDR memory timing budget design: https://www.micron.com/-/media/client/global/documents/products/technical-note/dram/tn4611.pdf The CIAA Project https://github.com/ciaa/Hardware/tree/master/PCB/ACC/CIAA_ACC How to lay out a PCB: https://www.youtube.com/watch?v=JrH_itjMDjo Forum: https://www.eevblog.com/forum/blog/eevblog-1247-ddr-memory-pcb-propagation-delay-layout/ #PCB #Layout #DDRmemory Bitcoin Donations: 38y7DE8HEHNj8fGDtUr4PkCn9nWxiorvvy Litecoin: ML7oQokTwB38bgzzjLDbRV97HKAHuwRfHA Ethereum: 0x11AceA38DCA9DbFfB4F35f3F746af65F9dED28ce EEVblog Main Web Site: http://www.eevblog.com The 2nd EEVblog Channel: http://www.youtube.com/EEVblog2 Support the EEVblog through Patreon! http://www.patreon.com/eevblog AliExpress Affiliate: http://s.click.aliexpress.com/e/c2LRpe8g Buy anything through that link and Dave gets a commission at no cost to you. Stuff I recommend: https://kit.com/EEVblog/ Donate With Bitcoin & Other Crypto Currencies! https://www.eevblog.com/crypto-currency/ T-Shirts: http://teespring.com/stores/eevblog Likecoin – Coins for Likes: https://likecoin.pro/@eevblog/dil9/hcq3 Tue, 21 Apr 2026 04:36:10 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://stream.echo6.co https://stream.echo6.co/client/assets/images/icons/icon-512x512.png https://stream.echo6.co/videos/watch/9d3853fe-c239-45e0-b5d6-00265e8b105a All rights reserved, unless otherwise specified in the terms specified at https://stream.echo6.co/about and potential licenses granted by each content's rightholder.