Can USB be connected when LPC54114 is in deep-sleep mode

da_chen — Thu, 07 Mar 2019 05:37:52 GMT

I found that USB can be set to wake up the MCU when in deep-sleep mode. But what if I disable the wake up interruption from USB. Do I need to reconnect with other devices? Or if I don't shutdown the USB connection, but block the interruption, will the MCU still be waked up by USB in deep-sleep mode?

Re: Can USB be connected when LPC54114 is in deep-sleep mode

ZhangJennie — Mon, 11 Mar 2019 06:53:09 GMT

Hi Da Chen,

USB interrupt can wake up MCU from deep sleep mode. In order to utilize it, you need enable USB NEEDCLK interrupt.

Besides, you need also enable the USB activity wake-up interrupt in the NVIC.

For more information, see UM10914 LPC5411X user manual, 22.7.6 USB wake-up.

Have a nice day,

Jun Zhang

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topic Can USB be connected when LPC54114 is in deep-sleep mode in LPC Microcontrollers

Can USB be connected when LPC54114 is in deep-sleep mode

Re: Can USB be connected when LPC54114 is in deep-sleep mode