diff --git a/data/registers/rtc_v2f0.yaml b/data/registers/rtc_v2f0.yaml
index 3ba9016..a2a81e8 100644
--- a/data/registers/rtc_v2f0.yaml
+++ b/data/registers/rtc_v2f0.yaml
@@ -742,6 +742,24 @@ enum/OSEL:
     - name: Wakeup
       description: Wakeup output enabled
       value: 3
+enum/PCMODE:
+  bit_size: 1
+  variants:
+    - name: Floating
+      description: PCx is controlled by the GPIO configuration Register. Consequently PC15 is floating in Standby mode
+      value: 0
+    - name: PushPull
+      description: PCx is forced to push-pull output if LSE is disabled
+      value: 1
+enum/PCVALUE:
+  bit_size: 1
+  variants:
+    - name: Low
+      description: If the LSE is disabled and PCxMODE = 1, set PCxVALUE to logic low
+      value: 0
+    - name: High
+      description: If the LSE is disabled and PCxMODE = 1, set PCxVALUE to logic high
+      value: 1
 enum/POL:
   bit_size: 1
   variants: