diff --git a/i2c-vr/xdpe1x2xx/xdpe1x2xx.hpp b/i2c-vr/xdpe1x2xx/xdpe1x2xx.hpp
index 6c38667..14a4070 100644
--- a/i2c-vr/xdpe1x2xx/xdpe1x2xx.hpp
+++ b/i2c-vr/xdpe1x2xx/xdpe1x2xx.hpp
@@ -25,7 +25,9 @@
 
   private:
     static const int MaxSectCnt = 16;
-    static const int MaxSectDataCnt = 200;
+    /*According to the XDPE192C3E datasheet, the Config User Section size has
+      reached 864 bytes, so MaxSectDataCnt requires at least 216.*/
+    static const int MaxSectDataCnt = 300;
 
     struct deviceInfo
     {