STM6600 - STM6601
Figure 14. PB interrupt
Push-button pressed and
PB connected to GND
(1,2)
PB
PSHOLD
PB status
ignored
VCC undervoltage
detection ignored
Waveforms
processor interrupt starts power-down sequence
processor sets PSHOLD low
PB status
ignored
and EN is deasserted
accordingly
t DEBOUNCE
t INT_Min
tEN_OFF
Note: VCC is considered VCC > VTH+.
1. PB detection on falling edge.
2. PB is released within tSRD and that is why NO reset is asserted and EN is NOT deasserted immediately.
AM00251v2
Doc ID 15453 Rev 7
21/51