2 - Electrical Integration
DynaWave| OEM Contactless NFC Module | Installation and Operation Manual
Page 20 of 39 (
D998200265-10
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The 5V pins and GND (digital ground) pins must be connected across the terminals of a power supply.
For optimal performance, use a 5VDC ±5% power supply with a current capacity of 500mA or greater.
The worst-case ripple voltage at the power supply’s 5VDC output must not exceed 100mV RMS.
When powered through the UART port, the device draws a maximum of 350mA in steady state.
Solutions should build in a safety margin that anticipates potential peaks up to 500mA.
MagTek recommends 22AWG wires for all signal and power lines. The connector contacts must have a
minimum of 15µ" of selective gold plating over nickel.
MagTek recommends enclosing all wires in a shielded earth-grounded jacket, and a maximum length for
the combination UART/power cable of 32 feet (10 meters). Actual cable length may vary based on cable
material and environmental factors.
for an example cable design. See
for a list of available cables and accessories MagTek has tested with the device. See section
further information about cabling.
The communication settings for the UART port are shown in
. The host must begin
communication using existing device settings, then can use that connection (or the
) to reconfigure the port settings. Programmers should see section
cross-references to programming tools and documentation for communicating through this port and
configuring the device.
Table 2-2 - UART Communication Settings
Parameter
Value / Default
Signal Voltage
3.3V (TTL)
Transmission Protocol
Asynchronous
Duplex
Full
Data Length
8 bits (Bit 7: MSB, Bit 0: LSB)
Parity
None
Start bits
1 bit
Stop bits
1 bit
Flow Control
None
Transmission Speed (baud rate)
115200 baud
