Explaining why the PORST signal is recommended to be used for handshake between the Core supply regulator and the MCU in addition to all the recommended hardware design guidelines.
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AN5424: External Regulation Mode and Associated Low Power Handshakes and Considerations – Application Note
Explaining why the PORST signal is recommended to be used for handshake between the Core supply regulator and the MCU in addition to all the recommended hardware design guidelines.