HID Global Corporation 5553 Manuale Utente
HF Multi ISO RFID Reader User Manual, Firmware V1.4
1508-USM-00-0-04
1.4.3 Serial Interface
The OEM Board can be connected directly with a micro controller. Alternatively the OEM Board also
can be connected to most serial interface types by using the right interface converter circuit. In
order to optimize the communication quality the specific application note of the interface converter
circuit needs to be taken into consideration.
can be connected to most serial interface types by using the right interface converter circuit. In
order to optimize the communication quality the specific application note of the interface converter
circuit needs to be taken into consideration.
12
11
11
Interface
Converter
Circuit
Converter
Circuit
Host Interface
OEM Board
Figure 5 - OEM Board Serial Interface
1.4.4 Function Control LEDs
Two external LEDs can be connected to the OEM Board. There are two alternatives possible.
uC
18
17
17
OEM Board
330 Ohm
Figure 6- Connecting External LEDs - Option 1
uC
18
17
17
330 Ohm
OEM Board
330 Ohm
Figure 7 - Connecting External LEDs - Option 2
In both cases the LED supply voltage levels are TTL levels.
August 2010
Page 17 of 144
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