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MCrew.1
Associate III
Sep 30, 2020 11:48 AM UTC
Solved

Can you use internal GPIO pull up for USB DP and USB DM?

I am using the STM32L496VGT (100 pin) MCU and using USB_OTG_FS_DP and USB_OTG_FS_DM for data transmission. If I set the GPIO pull up for these pins (PA11 and PA12), will that act as the required pull up for the USB?

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waclawek.jan
waclawek.janBest answer
Super User
Sep 30, 2020 11:58 AM UTC

The 'L4 already has the USB pullup on DP, read the datasheet. It does not need pullup on DM as it can't work as a Low-Speed device.

JW

1 reply

waclawek.jan
waclawek.janBest answer
Super User
Sep 30, 2020 11:58 AM UTC

The 'L4 already has the USB pullup on DP, read the datasheet. It does not need pullup on DM as it can't work as a Low-Speed device.

JW