diff --git a/README.md b/README.md
index 228dc53..be8e28e 100644
--- a/README.md
+++ b/README.md
@@ -13,3 +13,7 @@ https://datasheet.lcsc.com/szlcsc/1811172344_STMicroelectronics-STM32F072CBT6_C8
 ### ST AN2606
 
 https://www.st.com/resource/en/application_note/cd00167594-stm32-microcontroller-system-memory-boot-mode-stmicroelectronics.pdf
+
+### ST AN4080
+
+https://www.st.com/resource/en/application_note/dm00051986-getting-started-with-stm32f0x1x2x8-hardware-development-stmicroelectronics.pdf