AN2046 Datasheet, PDF (9/19 Pages) STMicroelectronics – STR71X CLOCK CONFIGURATIONS EASY SETUP

STR71X CLOCK CONFIGURATIONS EASY SETUP
■ Select the Pulse Width Modulation Input mode,
■ Configure ICAP A to a positive edge (Rising edge),
■ Configure ICAP B to negative edge (Falling edge),
■ Select the clock as internal and configure the Prescaler to 49,
■ Enable the Timer Counter.
7 USB
The USB controller on STR71x works with an external clock generator supplying 48MHz as
defined in the specification.
Note: However, due to USB data rate and packet memory interface requirements, the APB1
clock frequency must be greater than 8MHz to avoid data overrun/underrun problems.
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