diff --git a/sysmoOCTSIM/include/instance/freqm.h b/sysmoOCTSIM/include/instance/freqm.h
new file mode 100644
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--- /dev/null
+++ b/sysmoOCTSIM/include/instance/freqm.h
@@ -0,0 +1,59 @@
+/**
+ * \file
+ *
+ * \brief Instance description for FREQM
+ *
+ * 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_FREQM_INSTANCE_
+#define _SAME54_FREQM_INSTANCE_
+
+/* ========== Register definition for FREQM peripheral ========== */
+#if (defined(__ASSEMBLY__) || defined(__IAR_SYSTEMS_ASM__))
+#define REG_FREQM_CTRLA            (0x40002C00) /**< \brief (FREQM) Control A Register */
+#define REG_FREQM_CTRLB            (0x40002C01) /**< \brief (FREQM) Control B Register */
+#define REG_FREQM_CFGA             (0x40002C02) /**< \brief (FREQM) Config A register */
+#define REG_FREQM_INTENCLR         (0x40002C08) /**< \brief (FREQM) Interrupt Enable Clear Register */
+#define REG_FREQM_INTENSET         (0x40002C09) /**< \brief (FREQM) Interrupt Enable Set Register */
+#define REG_FREQM_INTFLAG          (0x40002C0A) /**< \brief (FREQM) Interrupt Flag Register */
+#define REG_FREQM_STATUS           (0x40002C0B) /**< \brief (FREQM) Status Register */
+#define REG_FREQM_SYNCBUSY         (0x40002C0C) /**< \brief (FREQM) Synchronization Busy Register */
+#define REG_FREQM_VALUE            (0x40002C10) /**< \brief (FREQM) Count Value Register */
+#else
+#define REG_FREQM_CTRLA            (*(RwReg8 *)0x40002C00UL) /**< \brief (FREQM) Control A Register */
+#define REG_FREQM_CTRLB            (*(WoReg8 *)0x40002C01UL) /**< \brief (FREQM) Control B Register */
+#define REG_FREQM_CFGA             (*(RwReg16*)0x40002C02UL) /**< \brief (FREQM) Config A register */
+#define REG_FREQM_INTENCLR         (*(RwReg8 *)0x40002C08UL) /**< \brief (FREQM) Interrupt Enable Clear Register */
+#define REG_FREQM_INTENSET         (*(RwReg8 *)0x40002C09UL) /**< \brief (FREQM) Interrupt Enable Set Register */
+#define REG_FREQM_INTFLAG          (*(RwReg8 *)0x40002C0AUL) /**< \brief (FREQM) Interrupt Flag Register */
+#define REG_FREQM_STATUS           (*(RwReg8 *)0x40002C0BUL) /**< \brief (FREQM) Status Register */
+#define REG_FREQM_SYNCBUSY         (*(RoReg  *)0x40002C0CUL) /**< \brief (FREQM) Synchronization Busy Register */
+#define REG_FREQM_VALUE            (*(RoReg  *)0x40002C10UL) /**< \brief (FREQM) Count Value Register */
+#endif /* (defined(__ASSEMBLY__) || defined(__IAR_SYSTEMS_ASM__)) */
+
+/* ========== Instance parameters for FREQM peripheral ========== */
+#define FREQM_GCLK_ID_MSR           5        // Index of measure generic clock
+
+#endif /* _SAME54_FREQM_INSTANCE_ */