QST104 STMicroelectronics, QST104 Datasheet - Page 37

• Manufacturer Part Number: QST104
• Description: Capacitive touch sensor device 4 keys
• Manufacturer: STMicroelectronics

QST104
6.7
RESET pin
T
Table 29.
1. Data based on characterization results, not tested in production.
2. The I
3. The R
4. To guarantee the reset of the device, a minimum pulse has to be applied to the RESET pin. All short pulses
t
A
w(RSTL)out
t
t
Symbol
h(RSTL)in
g(RSTL)in
= -40°C to 125°C, unless otherwise specified.
characteristics on page 31
between V
applied on RESET pin with a duration below t
V
R
V
V
V
hys
OL
ON
IH
IL
IO
ON
current sunk must always respect the absolute maximum rating specified in
pull-up equivalent resistor is based on a resistive transistor. Specified for voltages on RESET pin
Input low level voltage
Input high level voltage
Schmitt trigger voltage
hysteresis
Output low level
voltage
Pull-up equivalent
resistor
Generated reset pulse
duration
External reset pulse
hold time
Filtered glitch duration
ILmax
RESET pin characteristics
and V
Parameter
(2)
(3)
(4)
(1)
DD
.
and the sum of I
Internal reset sources
V
V
DD
IN
IO
=
= 5V I
Conditions
h(RSTL)in
V
(I/O ports and control pins) must not exceed I
SS
IO
V
V
can be ignored.
DD
DD
= +2mA
= 5V
= 3V
0.7 x V
V
SS
Min.
30
20
− 0.3
DD
Electrical characteristics
90
90
Typ.
200
200
50
Table 22: Current
2
(1)
(1)
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V
0.3x V
VSS
DD
Max.
.
70
+ 0.3
DD
37/45
Unit
mV
kΩ
μs
μs
ns
V
V