User Manual

ThingMagic Nano User Guide 23
www.JADAKtech.com
There is the potential for 24MHz harmonics radiating from pins 22 through 28 of the ThingMagic Nano. If
emissions testing shows such harmonics, the easiest fix is to put bypass capacitors (typically 39 to 100pf)
directly at the offending pins on the carrier board. Note that higher values are not necessarily better. The
ideal capacitor value will have series resonance near the most offending frequency. 39pF has been good
for around 900 MHz in sample board layouts.
ThingMagic Nano Carrier Board
Carrier Board
The Nano Carrier Board is an example of a host board to create an assembly that is compatible with the
standard Development Kit main board. It has the size and dimensions of the M6e module (69 mm x 43 mm)
and uses the same connector for power and control (Molex 532611571 - 1.25mm pin centers, 1 amp per
pin rating, which mates with Molex housing p/n 51021-1500 with crimps p/n 63811-0300).
The pin definitions are the same as for the M6e module for the functions that are supported by the
ThingMagic Nano module, with one exception: The “SHUTDOWN” line of the M6e performs the same
function as the ENABLE line in the Nano but has reversed polarity.
Pin Definitions
Pin Number Signal
Signal Direction with
respect to
Carrier Board
Notes
1,2 GND Power and Signal Return Must connect both pins to ground.
3,4 DC Power in Input 3.3 to 5.5 VDC; must connect both pins
to the supply.
5 GPIO1 Bidirectional Same Specifications as Nano.
6 GPIO2 Bidirectional Same Specifications as Nano.
7 GPIO3 Bidirectional Same Specifications as Nano.
8 GPIO4 Bidirectional Same Specifications as Nano.
9 UART RX Input
10 UART TX Output
11-13 RFU Not Internally Connected