Merge branch 'patch-3' into 'master'

更新 README.md See merge request !3

Merge branch 'patch-3' into 'master'
1aec5ab1 · 李川 · 75cfd035 · 4da773d5 · 1aec5ab1
--- a/README.md
+++ b/README.md
 # 说明
 Intel 8250 可编程串行通信接口芯片
+# Datasheet
+[8251.pdf](8251.pdf)
 # 原理图
 ![raw svg](8250.dlsche.svg)
\ No newline at end of file