Does PSoC 5LP require an external crystal to support USB? | Cypress Semiconductor
Does PSoC 5LP require an external crystal to support USB?
The datasheet for the USBFS component states that the PSoC 5 requires an external crystal and seems to suggest that this is not the case for PSoC 3 and PSoC 5LP. AN73503 http://www.cypress.com/?rID=57561 states that "Since the projects involve the use of USB component, in case of PSoC 5LP it is mandatory to use an external 24 MHz crystal." Is this a typo in AN73503 or should I include a crystal in my PSoC 5LP design if I intend to use the USBFS component?