Datasheet

Waveforms STM6600, STM6601
14/52 Doc ID 15453 Rev 11
4 Waveforms
Figure 7. Successful power-up on STM6600 (PB released prior to t
ON_BLANK
expiration)
1. PB detection on falling and rising edges.
2. Internal pull-down resistor 300 kΩ is connected to PS
HOLD
input during power-up.
3. EN signal is high even after PB
release, because processor sets PS
HOLD
signal high before PB is released.
PS
HOLD
ignored
internal pull-down resistor
connected to PS
HOLD
input
V
CC
undervoltage detection
ignored
PB
(1)
PS
HOLD
(2)
EN
(3)
RST
Push-button pressed and
PB connected to GND
t
DEBOUNCE
t
REC
processor
sets PS
HOLD
PB released prior to t
ON_BLANK
expiration
PS
HOLD
state detected as high
EN remains asserted
t
ON_BLANK
AM00247v3
INT signal is held high during power-up (i.e. until PB release in this case).
V
CC
is considered V
CC
> V
TH+
.
Note: