Hi Shravan, not sure what you mean with bootup code. But if you mean the Bootstrap Loader then you follow the instructions mentioned in the datasheet. 6.4 Bootstrap Loader (BSL) The BSL lets users program the FRAM or RAM using a UART serial interface. Access to the device memory through the BSL is protected by an user-defined password. Use of the BSL requires four pins as shown in Table 6-3. BSL entry requires a specific entry sequence on the RST/NMI/SBWTDIO and TEST/SBWTCK pins. For a complete description of the features of the BSL and its implementation, see the MSP430FR4xx and MSP430FR2xx Bootstrap Loader (BSL) User's Guide (SLAU610). Best regards, Dietmar
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