5.22 USART0, USART1over recommended operating supply voltage and free-air temperature (unless otherwise noted)
||USART0 or USART1 deglitch time(1)
(1) The signal applied to the USART0 USART1 receive terminal (URXD0 or URXD1) must meet the timing requirements of t(τ) to ensure that the URXS flip-flop is set. The URXS flip-flop is set with negative pulses meeting the minimum timing condition of t(τ). The operating conditions to set the flag must be met independently from this timing constraint. The deglitch circuitry is active only on negative transitions on the URXD0 or URXD1 line.