This type of pin is a digital input (DI) including a pulse counting (PI) feature.
This kind of pins have a pull-up resistor to +5 V
Pulse inputs can be used as a 1 or 2 channel pulse counter and they have a possibility for reset pulse. Possible software channels and pairs are listed in section SW channels for Pulse Inputs.
Inputs of this type are also suitable for quadrature sensor position counting.
Electrical characteristics
|
Symbol |
Parameter |
Conditions |
Min |
Max |
Units |
|
RI |
Input Resistance |
|
typ. 3,3 |
kΩ |
|
|
VIH |
Input High Voltage |
Overload conditions (Note 1) |
4,1 |
22 |
V |
|
VIL |
Input Low Voltage |
|
-0,5 |
3,4 |
V |
|
fI |
Input Frequency (frequency measurement and pulse counting) |
|
|
|
|
|
|
Input Frequency |
|
|
|
|
|
tI |
Input Pulse Width |
|
|
|
|
|
CI |
Input Capacitance |
|
typ. 1 |
nF |
|
Note 1: Exceeding the max value might cause damage to input.