https://blog.wongcw.com/2021/07/15/sk%e6%b5%b7%e5%8a%9b%e5%a3%ab%e9%96%8b%e5%a7%8b%e7%94%9f%e7%94%a2%e9%9d%a2%e5%90%91%e7%a7%bb%e5%8b%95%e5%b9%b3%e5%8f%b0%e7%9a%84lpddr5-dram/