STM6600 STMicroelectronics, STM6600 Datasheet - Page 11

• Manufacturer Part Number: STM6600
• Description: Smart push-button on/off controller with smart reset and power-on lockout
• Manufacturer: STMicroelectronics

STM6600 - STM6601
EN or EN - enable output
This output is intended to enable system power (see
a valid turn-on event has been detected and confirmed (i.e. push-button has been pressed
and held for t
Figure
Described logic levels are inverted in case of EN output. Output type is push-pull by default.
RST - reset output
This output pulls low for t
Output type is active low and open drain by default. Open drain output type requires a pull-
up resistor. A 10 kΩ is sufficient in most applications.
INT - interrupt output
While the system is under normal operation (PS
asserted), the INT is driven low if:
The state of the PB
either the assertion of the PB input, or was due to the detection of an undervoltage condition
on V
INT output is asserted low for at least t
Output type is active low and open drain by default. Open drain output type requires a pull-
up resistor. A 10 kΩ is sufficient in most applications.
GND - ground
CC
a)
b)
c)
d)
a)
b)
a)
b)
13). EN is released low if any of the conditions below occur:
.
the push-button is released before PS
Figure
for both STM6600 and STM6601, see
PS
an undervoltage condition is detected for more than t
(see
a long push of the buttons is detected (only for the device with option “EN
deasserted by long push” - see
t
asserted by long push” - see
during startup. PB has been pressed (falling edge on the PB detected) and held
for at least t
more details).
after long push detection (valid only for the device with option “RST asserted by
long push”). PB has been pressed (falling edge on the PB detected) and held for
more than t
by the external capacitor C
V
21).
the falling edge on the PB is detected and the push-button is held for t
more. INT is driven low after t
INT signal is held high during power-up.
ON_BLANK
CC
HOLD
DEBOUNCE
falls below V
Figure
9) or t
is driven low during normal operation (see
OUT
after a long push of the buttons (only for the device with option “RST
DEBOUNCE
DEBOUNCE
21).
ON_BLANK
output can be used to determine if the interrupt was caused by
or more and V
REC
TH-
:
Doc ID 15453 Rev 10
threshold (i.e. undervoltage is detected - see
+ t
and V
expires before PS
SRD
SRD
CC
CC
(additional Smart Reset
INT_Min
Figure
DEBOUNCE
) - see
> V
Figure
> V
TH+
TH+
.
18).
Figure
HOLD
HOLD
Figure 10
19) or PS
(see
voltage level has been detected - see
and stays low as long as PB is held. The
HOLD
Figure
is driven high (valid for STM6600, see
is driven high, power for application is
Figure
18.
is driven high during startup (valid
HOLD
and 12).
1). EN is asserted high after
Figure
7, 8, 9, 10, 11,
™
SRD
is not driven high during
delay time can be adjusted
+ t
14).
INT_Min
Pin descriptions
Figure 20
12
+ t
DEBOUNCE
DEBOUNCE
and
13
and
11/52
for
or