5.26 USART1over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)(1)
||USART1 deglitch time
||VCC = 2.2 V, SYNC = 0, UART mode
|VCC = 3 V, SYNC = 0, UART mode
(1) The signal applied to the USART1 receive signal (terminal) (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 that meet 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 URXD1 line.