Update READMEhttps://github.com//issues/151

Author: lewisxhe

README.MD

@@ -145,10 +145,10 @@ Please enter the upload mode manually.
 | 7            | E-paper D7          | ❌    |
 | 21           | Button              | ❌    |
 | 14           | Battery ADC         | ❌    |
-| 16           | SD MISO             | ❌    |
-| 15           | SD MOSI             | ❌    |
-| 11           | SD  SCK             | ❌    |
-| 42           | SD  CS              | ❌    |
+| 16           | SD MISO             | ❌*   |
+| 15           | SD MOSI             | ❌*   |
+| 11           | SD  SCK             | ❌*   |
+| 42           | SD  CS              | ❌*   |
 | 18           | SDA                 | ❌    |
 | 17           | SCL                 | ❌    |
 | 47           | TouchPanel IRQ      | ❌    |
@@ -157,4 +157,6 @@ Please enter the upload mode manually.
 | 48           | No Connect any      | ✅    |
 | 39           | No Connect any      | ✅    |
 
-* The GPIOs marked with ✅ are free to use. GPIO10 Can be used for analog input, but not for others.
+- The GPIOs marked with ✅ are free to use. GPIO10 Can be used for analog input, but not for others.
+- SD Pin If you don't use an SD card, these GPIOs(16,15,11,42) are free to use.
+- ESP cannot be woken up by touch interrupt because RTC_GPIO is not connected to touch interrupt in design. However, GPIO10 can be connected to GPIO47 to make touch wake-up function possible. Please see here [issues/93](https://github.com/Xinyuan-LilyGO/LilyGo-EPD47/issues/93#issuecomment-2488500117)