64.5.4.1.7 Debouncing Time
The debouncing time is common to all I/Os. The principle is presented in the following figure. A period (fICLK/2) is allocated to each I/O. During that period, if SECUMOD_PIOBUx.SCHEDULE is set and if a pull-up/pull-down is needed (PULLUP field different from 0), the pull-up/pull-down is activated, the level is measured and the pull-up/pull-down is deactivated. Otherwise, only the level is measured. Measurement is performed at the end of the allocated period.
| Timing | fICLK (kHz) | Units | ||
|---|---|---|---|---|
| Min = 38 | Typ = 64 | Max = 90 | ||
| tICLK/2 | 53 | 31 | 22 | μs |
| tICLK/32 | 842 | 500 | 356 | μs |
| tICLK/256 | 6.74 | 4.00 | 2.84 | ms |