diff --git a/README.md b/README.md
index a34ea46..ee10682 100644
--- a/README.md
+++ b/README.md
@@ -1,12 +1,13 @@
 ## DAPLink
 DAPLink (CMSIS-DAP) based on Nuvoton M480, supports SWD and CDC.
 
-SWD_CLK => PA.1
-SWD_DIO => PA.0
-
-CDC_TXD => PB.1
-CDC_RXD => PB.0
-
-LED_SWD => PA.2
-LED_TXD => PC.1
-LED_RXD => PC.0
+### Pin map
+|  FUNC   | Pin   |
+|  :----  | :---- |
+| SWD_CLK | PA.1  |
+| SWD_DIO | PA.0  |
+| CDC_TXD | PB.1  |
+| CDC_RXD | PB.0  |
+| LED_SWD | PA.2  |
+| LED_TXD | PC.1  |
+| LED_RXD | PC.0  |