diff --git a/F1:F103/Readme.md b/F1:F103/Readme.md
index fe5a464..747d3aa 100644
--- a/F1:F103/Readme.md
+++ b/F1:F103/Readme.md
@@ -32,3 +32,6 @@
 - **USB_SPI** - work with SPI over USB
 - **ws2815** - running rainbow on LED strip WS2815
 
+- **STM32F103C.md** - markdown table for 48-pin STM32F103, use it as template in Readme.md, to format 
+pretty looking table [use](https://josh.fail/2022/pure-bash-markdown-table-generator/) `markdown-table -5 -s"|" < STM32F103C.md >> Readme.md` 
+after filling it with your data. 
diff --git a/F1:F103/STM32F103C.md b/F1:F103/STM32F103C.md
new file mode 100644
index 0000000..4968e45
--- /dev/null
+++ b/F1:F103/STM32F103C.md
@@ -0,0 +1,50 @@
+| **Pin #** | **Pin name ** | **function** | **settings** | **comment ** |
+| --------- | ------------- | ------------ | ------------ | ------------ |
+| 1         | VBAT          |              |              |              |
+| 3         | PC13          |              |              |              |
+| 3         | PC14          |              |              |              |
+| 4         | PC15          |              |              |              |
+| 5         | OCS_IN        |              |              |              |
+| 6         | OSC_OUT       |              |              |              |
+| 7         | NRST          |              |              |              |
+| 8         | VSSA          |              |              |              |
+| 9         | VDDA          |              |              |              |
+| 10        | PA0           |              |              |              |
+| 11        | PA1           |              |              |              |
+| 12        | PA2           |              |              |              |
+| 13        | PA3           |              |              |              |
+| 14        | PA4           |              |              |              |
+| 15        | PA5           |              |              |              |
+| 16        | PA6           |              |              |              |
+| 17        | PA7           |              |              |              |
+| 18        | PB0           |              |              |              |
+| 19        | PB1           |              |              |              |
+| 20        | PB2           |              |              |              |
+| 21        | PB10          |              |              |              |
+| 22        | PB11          |              |              |              |
+| 23        | VSS1          |              |              |              |
+| 24        | VDD1          |              |              |              |
+| 25        | PB12          |              |              |              |
+| 26        | PB13          |              |              |              |
+| 27        | PB14          |              |              |              |
+| 28        | PB15          |              |              |              |
+| 29        | PA8           |              |              |              |
+| 30        | PA9           |              |              |              |
+| 31        | PA10          |              |              |              |
+| 32        | PA11          |              |              |              |
+| 33        | PA12          |              |              |              |
+| 34        | PA13          |              |              |              |
+| 35        | VSS2          |              |              |              |
+| 36        | VDD2          |              |              |              |
+| 37        | PA14          |              |              |              |
+| 38        | PA15          |              |              |              |
+| 39        | PB3           |              |              |              |
+| 40        | PB4           |              |              |              |
+| 41        | PB5           |              |              |              |
+| 42        | PB6           |              |              |              |
+| 43        | PB7           |              |              |              |
+| 44        | BOOT0         |              |              |              |
+| 45        | PB8           |              |              |              |
+| 46        | PB9           |              |              |              |
+| 47        | VSS3          |              |              |              |
+| 48        | VDD3          |              |              |              |