diff --git a/sysmoOCTSIM/include/instance/trng.h b/sysmoOCTSIM/include/instance/trng.h
new file mode 100644
index 0000000..c34f28c
--- /dev/null
+++ b/sysmoOCTSIM/include/instance/trng.h
@@ -0,0 +1,51 @@
+/**
+ * \file
+ *
+ * \brief Instance description for TRNG
+ *
+ * Copyright (c) 2018 Microchip Technology Inc.
+ *
+ * \asf_license_start
+ *
+ * \page License
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the Licence at
+ * 
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an AS IS BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * \asf_license_stop
+ *
+ */
+
+#ifndef _SAME54_TRNG_INSTANCE_
+#define _SAME54_TRNG_INSTANCE_
+
+/* ========== Register definition for TRNG peripheral ========== */
+#if (defined(__ASSEMBLY__) || defined(__IAR_SYSTEMS_ASM__))
+#define REG_TRNG_CTRLA             (0x42002800) /**< \brief (TRNG) Control A */
+#define REG_TRNG_EVCTRL            (0x42002804) /**< \brief (TRNG) Event Control */
+#define REG_TRNG_INTENCLR          (0x42002808) /**< \brief (TRNG) Interrupt Enable Clear */
+#define REG_TRNG_INTENSET          (0x42002809) /**< \brief (TRNG) Interrupt Enable Set */
+#define REG_TRNG_INTFLAG           (0x4200280A) /**< \brief (TRNG) Interrupt Flag Status and Clear */
+#define REG_TRNG_DATA              (0x42002820) /**< \brief (TRNG) Output Data */
+#else
+#define REG_TRNG_CTRLA             (*(RwReg8 *)0x42002800UL) /**< \brief (TRNG) Control A */
+#define REG_TRNG_EVCTRL            (*(RwReg8 *)0x42002804UL) /**< \brief (TRNG) Event Control */
+#define REG_TRNG_INTENCLR          (*(RwReg8 *)0x42002808UL) /**< \brief (TRNG) Interrupt Enable Clear */
+#define REG_TRNG_INTENSET          (*(RwReg8 *)0x42002809UL) /**< \brief (TRNG) Interrupt Enable Set */
+#define REG_TRNG_INTFLAG           (*(RwReg8 *)0x4200280AUL) /**< \brief (TRNG) Interrupt Flag Status and Clear */
+#define REG_TRNG_DATA              (*(RoReg  *)0x42002820UL) /**< \brief (TRNG) Output Data */
+#endif /* (defined(__ASSEMBLY__) || defined(__IAR_SYSTEMS_ASM__)) */
+
+
+#endif /* _SAME54_TRNG_INSTANCE_ */