User manual

Hardware description |Seite 15
2.6. Configuration of the voltage level of TTL-I/O's
TTL level of 1.8 V to 5 V:
By default, you can select the TTL level of 3.3 V or 5V via jumper.
If you remove the jumper on the module, you can apply your own voltage between
1.8 V to 5 V to the TTL-I/O module, so the possibilities of the modules were
significantly increased.
If you want to apply your own voltage, this is done via the VIN pin see chapter Pin
assignment.
The TTL-I/O's of the module can be configured in a 16 blocks.