Datasheet

Waveforms STM6600, STM6601
16/52 Doc ID 15453 Rev 11
Figure 9. Unsuccessful power-up on STM6600 (PB released prior to t
ON_BLANK
)
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 goes low with PB
release, because processor did not force PS
HOLD
signal high.
internal pull-down resistor
connected to PS
HOLD
input
PS
HOLD
ignored
PB status
ignored
V
CC
undervoltage detection
ignored
PB
(1)
PS
HOLD
(2)
EN
(3)
RST
Push-button pressed and
PB connected to GND
t
DEBOUNCE
PB released
PS
HOLD
state detected as low
EN deasserted
t
REC
t
EN_OFF
t
ON_BLANK
AM00248v3
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: