Caen RFID Hadron R4320C, Техническое руководство

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HADRON R4320C/R4320CB - Technical Information Manual 13
Power supply connection
In the following schematic suggested R4320C/R4320CB power supply connection is shown.
The use of a resettable fuse (F1) is recommended since R4320C/R4320CB does not provide internal current
limitation protection.
Diode D1 avoid damage to the reader in case of reverse polarity connection.
Fig. 2.2: Hadron R4320C/R4320CB Power Supply Connection
General purpose I/O connections
The GPIO0-GPIO3 pins are 4 general-purpose bidirectional pins. Their default direction after a power on
reset or a general reset is set to input.
GPIO, when configured as Outputs, can be used to drive indicators as LEDs or buzzers or to send trigger
signal to others equipment.
GPIO, when configured as Inputs, can accept control signals from other equipment or trigger signals from
sensors (i.e. photocells).
In the following schematic an example of application of GPIO is shown.
Fig. 2.3: Hadron R4320C/R4320CB GPIO Connection Example