-#define EEFC_FMR (*((reg32_t *)(EEFC_BASE + EEFC_FMR_OFF))) ///< Flash Mode Register
-#define EEFC_FCR (*((reg32_t *)(EEFC_BASE + EEFC_FCR_OFF))) ///< Flash Command Register
-#define EEFC_FSR (*((reg32_t *)(EEFC_BASE + EEFC_FSR_OFF))) ///< Flash Status Register
-#define EEFC_FRR (*((reg32_t *)(EEFC_BASE + EEFC_FRR_OFF))) ///< Flash Result Register
+#define EEFC0_FMR (*((reg32_t *)(EEFC0_BASE + EEFC_FMR_OFF))) ///< Flash Mode Register
+#define EEFC0_FCR (*((reg32_t *)(EEFC0_BASE + EEFC_FCR_OFF))) ///< Flash Command Register
+#define EEFC0_FSR (*((reg32_t *)(EEFC0_BASE + EEFC_FSR_OFF))) ///< Flash Status Register
+#define EEFC0_FRR (*((reg32_t *)(EEFC0_BASE + EEFC_FRR_OFF))) ///< Flash Result Register
+
+#ifdef CPU_CM3_SAM3X
+ #define EEFC1_FMR (*((reg32_t *)(EEFC1_BASE + EEFC_FMR_OFF))) ///< Flash Mode Register
+ #define EEFC1_FCR (*((reg32_t *)(EEFC1_BASE + EEFC_FCR_OFF))) ///< Flash Command Register
+ #define EEFC1_FSR (*((reg32_t *)(EEFC1_BASE + EEFC_FSR_OFF))) ///< Flash Status Register
+ #define EEFC1_FRR (*((reg32_t *)(EEFC1_BASE + EEFC_FRR_OFF))) ///< Flash Result Register
+#endif