53
5.3. Digital inputs.
Parameter, characteristics
Value, description
Total number of digital inputs (DI1-DI16, DI_SYN1, DI_SYN2)
Of these, the number of digital inputs with synchronization function
(DI_SYN1, DI_SYN2)
18
2
Data entry modes
Synchronous, asynchronous
Program control of pull-up resistors activation:
- for inputs DI1-DI16
Regardless of the high and
low byte
- for inputs DI_SYN1, DI_SYN2
Regardless of each input
Maximum speed in synchronous mode
2 Mwords/s
Maximum speed in asynchronous mode.
The actual speed depends on
many factors of the software
and hardware environment.
Maximum permissible input voltage range:
- at the inputs DI1-DI16
- at the inputs DI_SYN1, DI_SYN2
–0.5…+6.5 V
–10…+10 V
Recommended operating voltage range
0 …+5.5 V
Operating voltage range
-0.2...+0.6 V ("logical zero")
+2.4...+5.0 V ("logical
item").
High-impedance state with power off
Yes
Maximum input current with power off
10 µA
Own input current in operating mode with software-activated pull-up
resistors
10 µA
Pull-up resistor resistance
2.2 kOhm with regard to
+3.3 V
Recommended edge duration:
- at the input DI1-DI16
- DI_SYN1, DI_SYN2
0…50 ns
Not limited
The input hysteresis voltage DI_SYN1, DI_SYN2, typical value
400 mV