Application Manual

ManualsBrands2N Telekomunikace ManualsElectronicsMODULAR TRANSCEIVER

2N NFC Radio Module

Application Manual

2N Telekomunikace a.s. 9.11.2018 1

Application Manual

2N NFC Radio Module

Introduction

A purpose of this document is to describe HW interface of 2N NFC Radio Module. The module is

equipped with two radio interfaces – 125 kHz RFID (LF) and 13.56 MHz RFID (HF). The module has a

programming interface (SWD), serial interface (UART) and 28 GPIOs.

Technical Data

Frequency 125 kHz / 134.2 kHz (LF), 13.56 MHz (HF)

Antenna External, direct matched for 13.56 MHz, 480 µH ± 5% for 125 kHz / 134.2 kHz

Power Supply 3.3 V +/- 5% (direct supply) or 4.2 V - 5.5 V (use of on-board voltage regulator),

250mA max. current consumption in both cases

Temp. Range Operating: -25 °C up to +80 °C (-13 °F up to +176 °F)

Storage: -45 °C up to +85 °C (-49 °F up to +185 °F)

Rel. Humidity 5% to 95% non-condensing

Electrical interface

The module footprint is depicted in Figure 1. The footprint pads are numbered from J1 to J50 are

referenced within this document in such a format. Meaning of all the relevant pads is described in

Table 1 bellow.

Figure 1: 2N NFC Radio Module Footprint (bottom view)

Summary of content (4 pages)

PAGE 1
2N NFC Radio Module Application Manual Application Manual 2N NFC Radio Module Introduction A purpose of this document is to describe HW interface of 2N NFC Radio Module. The module is equipped with two radio interfaces – 125 kHz RFID (LF) and 13.56 MHz RFID (HF). The module has a programming interface (SWD), serial interface (UART) and 28 GPIOs. Technical Data Frequency 125 kHz / 134.2 kHz (LF), 13.56 MHz (HF) Antenna External, direct matched for 13.56 MHz, 480 µH ± 5% for 125 kHz / 134.
PAGE 2
N NFC Radio Module Application Manual Peripheral Pad Power J21, J33, J42, J48 J47 J41 J38 J40 SWD J25 J26 GPIO J10 J11 J12 J13 J14 J15 J16 J17 J18 J19 J20 J22 J23 J24 J29 J30 J31 J32 J34 J35 J36 J37 J43 J44 J45 J46 J49 J50 Serial J27 interface J28 Reset J39 HF Radio J1 J2 J3 J4 J5 J6 J7 LF Radio J8 J9 Signal GND VIN VREG REGEN VDD SWCLK SWDIO GPIO1 GPIO2 GPIO3 GPIO4 GPIO5 GPIO6 GPIO7 GPIO8 GPIO9 GPIO10 GPIO11 GPIO12 GPIO13 GPIO14 GPIO15 GPIO16 GPIO17 GPIO18 GPIO19 GPIO20 GPIO21 GPIO22 GPIO23 GPIO24 GPIO25
PAGE 3
2N NFC Radio Module Application Manual Radio Interfaces LF Radio Interface A simple air core coil with approx. 480uH inductance (+/- 5% tolerance) works in a role of antenna for 125kHz radio part. The connection between module and antenna should be short with minimal inductance (a twisted pair of wires is recommended). HF Radio Interface The electrical schematic of HF radio part is shown below in Figure 2. The module is connected to a 1uH air core coil via matching network.
PAGE 4
2N NFC Radio Module Application Manual FCC statements: This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Caution: Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate this equipment.