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ルネサス エレクトロニクス株式会社 (Renesas Electronics Corporation)

How to Receive UART Data in Software Standby Mode on RA0E1 Fast Prototyping Board

How to Receive UART Data in Software Standby Mode on RA0E1 Fast Prototyping Board
2026年4月16日

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Learn how to configure the RA0E1 Fast Prototyping Board to receive universal asynchronous receiver/transmitter (UART) data while the device operates in Software Standby mode, a low‑power operating state.

This video demonstrates how an incoming UART signal can trigger a receive interrupt that wakes the device from low‑power operation to normal mode, allowing communication to continue while minimizing power consumption. The example uses the RA0E1 Serial Interface UART‑A, a device‑specific UART channel, to illustrate how UART communication remains available in low‑power applications.