diff --git a/README.md b/README.md
index e5d8430..8c5b849 100644
--- a/README.md
+++ b/README.md
@@ -33,3 +33,7 @@ https://datasheet.lcsc.com/szlcsc/Richtek-Tech-RT8009-33GJ5_C16078.pdf
 ### MEIHUA MHPA1515RGBDT
 
 https://datasheet.lcsc.com/szlcsc/1907221506_MEIHUA-MHPA1515RGBDT_C404281.pdf
+
+### ST AN4312
+
+https://www.st.com/resource/en/application_note/dm00087990-design-with-surface-sensors-for-touch-sensing-applications-on-mcus-stmicroelectronics.pdf