type100179

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.

Electrical characteristics

*Symbol*	*Parameter*	*Conditions*	*Min*	*Max*	*Units*
RI	Input Resistance	Referenced to +5 V	typ. 10		kΩ
VIH	Input High Voltage	Overload conditions (Note 1)	4,1	33	V
VIL	Input Low Voltage		-0,5	3,3	V
fI	Input Frequency (frequency measurement and pulse counting)	(Note 4, 5)		20	kHz
fI	Input Frequency (digital inputs)	(Note 2, 3)		1/ 2tC	kHz
tI	Input Pulse Width		1	10000	ms
CI	Input Capacitance		typ. 1		nF

Note 1: Exceeding the max value might cause damage to input.

Note 2: tC denotes the software cycle time in milliseconds.

Note 3: The pulse width must be greater that the software cycle time. For example with 50/50 pulse ratio, the pulse frequency is 1 / (2*pulse width)

Note 4: The maximum value can be reached with 50 % duty cycle.

Note 5: The maximum frequency sum for all the pins is 40 kHz.