Datasheet

STM6600, STM6601 Waveforms
Doc ID 15453 Rev 11 25/52
Figure 19. Long push (option with enable deassertion)
1. t
SRD
period is set by external capacitor C
SRD
.
2. PB
ignored during t
INT_Min
.
3. After t
SRD
expires EN is forced low.
PB status
ignored
PB status
ignored
V
CC
undervoltage detection status ignored
PB
PS
HOLD
INT
(2)
EN
(3)
Push-button
pressed and PB
connected to GND
t
DEBOUNCE
Push-button held even
after t
SRD
expires and
EN is deasserted
t
INT
_
Min
t
DEBOUNCE
After t
EN_OFF
expires
PB is monitored for
falling edge
t
EN
_
OFF
INT can go high, if PB goes high,
but system freezes and processor
won’t respond
if system freezes, processor won’t
respond to any INT status change
t
SRD
(1)
set by C
SRD
SR
AM00253v2