4.6 UART RX Indication (PB4)
If the RNBD451 module low power is enabled, the host MCU must wake up the RNBD451 module before sending out the UART data. For this purpose, use the UART_Rx_Ind pin (pull low to wake-up the system).
If the RNBD451 module low power is enabled, the host MCU must wake up the RNBD451 module before sending out the UART data. For this purpose, use the UART_Rx_Ind pin (pull low to wake-up the system).
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