Technical Documentation for metraTec QR15 v2 HF RFID Module Date: August 2022 Version: 1.
Table of Contents 1 General Information / Security Advice................................................................3 1.1 Notes on the Use of this Documentation......................................................3 1.2 Security Advice............................................................................................. 3 1.3 Export Restriction......................................................................................... 3 1.4 Further Documentation.....................................
1 General Information / Security Advice 1.1 Notes on the Use of this Documentation This user manual and integration guide uses different symbols to point out potentially dangerous situations. The following signs and symbols are used throughout the document. ATTENTION Declares a potentially hazardous situation. If this is not avoided, the product or something in its surrounding could be damaged.
2 Product Description The QR15 HF RFID Module is an easy to use RFID module which can be integrated into your electronics without big effort. This allows you to equip your product with RFID functionality without designing your own RF board. Thanks to the tested and extremely flexible firmware you can read and write data to any tag that follows the ISO 15693 standard in no time. Even special features, e.g. sensor tags, can be used without firmware modifications.
Fig. 1: QR15 v2 top view 2.2 Intended Use The QR15 HF RFID Module reads RFID tags that comply to the ISO 15693 standard on a short range of 30-80 mm. Custom tag commands can be used without firmware changes if the tags follow the ISO 15693 standard with regard to the air interface. For transponders that use the ISO 14443A or a protocol with MIFARE® technology, please use our QR14 RFID Module. 2.3 Technical Specification Supply voltage Min. Typ. Max. 4.7 V 5.0 V 5.
RF output power 200mW 150mW 200mW 225mW V_In_low (GPIO) -0.3 V 0 0.9 V V_In_high (GPIO) 2.3 V 3.3 V 3.45 V V_out_low (GPIO) - 0 0.4 V V_out_high (GPIO) 2.9 V 3.3 V 3.45 V -25°C 20°C +85°C Operating Temperature (1) Antenna port impedance Internal antenna, 2250 mm2 Carrier frequency (2) 13.56 MHz Supported RFID Protocol ISO 15693 Dimensions 50,08 x 50,08 mm Antenna Connector n.a.
2.4 Pin assignments and description All connectors are standards 2.54mm pin headers with 9.2 mm mating length. Pins are marked in the top layer for reference. An Eagle library is available for easy integration into PCB designs. Fig.
Power connector is the two position pin header X1. Pin Pin Pin PCB Pin Pin Function Name Nr. Direction Marking P_GND X1.1 PWR “-” power supply GND, internally connected to G_GND +5V X1.2 PWR “+” main supply, connect low noise regulated 5V supply Tab. 1: Power Supply Pins UART connector is the three position pin header X2. Pin Pin Pin PCB Name Nr. Direction Marking U_GND X2.1 Pass. “G” Pin Function UART GND, NOT internally connected to P_GND and G_GND TXD X2.
high drive pin, 15mA drive strength GPIO_1 X3.3 I/O none 3.3V GPIO, direction is configurable via FW command, alternate functions on request, high drive pin, 15mA drive strength GPIO_2 X3.4 I/O none 3.3V GPIO, direction is configurable via FW command, alternate functions on request, 4mA drive strength GPIO_3 X3.5 I/O none 3.3V GPIO, direction is configurable via FW command alternate functions on request, 4mA drive strength GPIO_4 X3.6 I/O none 3.
GPIO_5 X3.7 I/O none 3.3V GPIO, direction is configurable via FW command, alternate function: SPI slave select (SSEL), alternate function: RS485 transmit driver enable (TXDEN), 4mA drive strength GPIO_6 X3.8 I/O none 3.3V GPIO, direction is configurable via FW command, alternate function: SPI clock Master In Slave Out (MISO), 4mA drive strength GPIO_7 X3.9 I/O “7” 3.3V GPIO, direction is configurable via FW command, alternate function: SPI Master Out Slave In (MOSI), 4mA drive strength Tab.
2.5 Mechanical Specification PCB dimensions as well as pin positions remain unchanged compared to prior revisions of the QR15. Fig.
2.6 Scope of Delivery The QR15 HF RFID Module comes with the following parts: QR15 HF RFID Module Documentation, Drivers and Demo Software are available via download from metraTec's website 2.
3 RFID Integration Guide 3.1 General Hints The QR15 features an onboard antenna emitting a magnetic field at 13.56MHz. Therefore the design should have no loops of wires or traces close to the module. This could lead to unintended inductive coupling and affect the function of the RFID module, the host and cause EMI problems. There should be no wires or traces crossing the area behind the module, traces will detune the internal antenna and reduce reading performance.
3.6 RF exposure considerations US/FCC: The conduced/radiated output power of the device is far below the FCC radio frequency exposure limits. Nevertheless, the device should be used in such a manner that the potential for human contact during normal operation is minimized. CAN/ISED: This equipment complies with ISED radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance of 1 cm between the radiator and your body.
3.9 Information on test modes and additional testing requirements Not applicable. 3.10 Additional testing, Part 15 Subpart B disclaimer This modular transmitter is only FCC/ISED authorized for the specific rule part/radio standards specification listed on the grant/certificate. The host product manufacturer is responsible for compliance to any other FCC rules/ISED radio standards specifications that apply to the host not covered by the modular transmitter grant of certification.
Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.
4 Power Supply and Power Consumption The module does not feature a reverse polarity protection. It is the task of the host board to supply a well filtered 5 V DC supply in order to achieve an optimum RFID performance. All internal voltages are derived from the 5V supply using onboard regulators. However, RFID systems require a very high level supply quality. Use linear regulators with high precision and high control speed whenever possible.
EN55011; 10m; Klasse A; Gruppe 1 EN55011; 10m; Klasse B; Gruppe 1 RBW: 120 kHz, Vertical Max Peak 60 50 Electrical Field (dBµV/m) 40 30 20 10 0 30 M 50 M 100 M 200 M 300 M 500 M 1G Frequency (Hz) Fig.
5 Communication The QR15 HF RFID Module communicates with its host using a 5V UART connection. This enables direct connection to a host microcontroller. The communication details of the serial interface are given in the table below. Baudrate (1) Min. Typ. Max. 114 000 115 200 116 500 Databits 8 Parity None Stopbits (1) 1 1 1.5 Others on request There is a range of circuits available to convert the 3.3 V UART Signal to RS232, RS422/485 or to USB or Ethernet.
6 Digital Inputs / Outputs (GPIOs) The QR15 Module has eight freely configurable input/output pins which can be set and read via the module. To use these GPIOs just connect your signals to the corresponding vias (X3). All signals are 3V3 signals. ATTENTION Please make sure that you only connect 3.3V level devices to the GPIOs or use the right level shifter if connecting other devices. Some industrial devices use 24 V DC inputs/outputs.
7 Certification ATTENTION Changes or modifications to the module not expressly approved by metraTec could void the user’s authority to operate the equipment. 7.1 CE / ETSI (EU) The QR15 HF RFID Module complies with ETSI EN 300 330. Nonetheless, the integrator of the module has to make sure that all requirements are met by the final product. It is his obligation to declare product conformity. We recommend to assign this task to a qualified third-party test lab specialized on EMC measurements. 7.
8 Further Notes Electronic devices like the QR15 HF RFID Module are covered by the (German) ElektroG (electronic waste law) as well as the European WEEE directive and as such may not be disposed of by way of the normal household trash. Instead they have to be recycled properly. For you as our customer this is no additional burden, however, as you can send the device back to us for proper recycling. We assure you that the devices received back will be recycled properly and in an environmentally friendly way.
9 Version History Versio n 1.0 1.1 1.2 1.3 Change created UART voltage level changed to 5V default fo backward compatibility UART filter and GND description adapted to 5V version FCC/ISED module integration added Technical Documentation metraTec QR15 24 Changed by Date TM 2.10.2020 TM 19.4.2021 TM 9.8.2021 TM 31.8.
Contact metraTec GmbH Niels-Bohr-Str. 5 D-39106 Magdeburg, Germany Tel.: +49 (0)391 251906-00 Fax: +49 (0)391 251906-01 Email: support@metratec.com Web: http://www.metratec.com Copyright © 2016 metraTec GmbH Reprint or reproduction of this documentation for other than internal purposes is only allowed with written permission by metraTec GmbH. All trademarks are the property of their respective owners. All right reserved.
