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USB-B1 v2 User Manual V1.5 22/05/2018 Table of Contents 1. Introduction ..................................................................................................................................................2 1.1 Device Overview ................................................................................................................................................ 2 1.2 System Overview ............................................................................................................................................... 3 1.3 Features ............................................................................................................................................................. 3 1.4 Connectors......................................................................................................................................................... 4 1.4.1 USB Connector (J1) ................................................................................................................................ 4 1.4.2 External Antenna Connector (J10) ........................................................................................................ 5 1.4.3 External / PCB Antenna Selection Connectors J8 and J9 ....................................................................... 5 1.4.4 IO and Peripheral Configuration Header ............................................................................................... 6 1.5 LEDs ................................................................................................................................................................... 6 2. Electrical Characteristics ................................................................................................................................7 2.1 Test Conditions .................................................................................................................................................. 7 2.2 Absolute Maximum Ratings ............................................................................................................................... 7 2.3 Operating Conditions......................................................................................................................................... 7 2.4 GPIO ................................................................................................................................................................... 7 2.5 Antenna Output ................................................................................................................................................. 8 2.6 Flash ................................................................................................................................................................... 8 2.7 IDAC ................................................................................................................................................................... 8 2.8 PWM ................................................................................................................................................................ 11 2.9 ADC .................................................................................................................................................................. 11 2.10 Comparator...................................................................................................................................................... 11 3. Installation and operation ........................................................................................................................... 12 4. Mechanical Dimensions ............................................................................................................................... 13 1 1. Introduction 1.1 Device Overview Features • • • • • • • • • • • • • • • Low cost RFID Reader with MIFARE Classic®, MIFARE Ultralight® and NTAG2® support LED indicator of a tag presence in the antenna field Stand-alone mode (polling) Command interface via USB COM PORT with optional AES-128 encryption UART baud rate up to 921600 bps High transponder read and write speed -25°C to 85°C operating range 4 configurable GPIOs with interrupts 3 configurable PWMs Comparator ADC Current Output DAC AES-128 encryption engine Multiple internal reference voltages RoHS compliant Applications • • • • • • • Access control Monitoring goods Approval and monitoring consumables Pre-payment systems Managing resources Contact-less data storage systems Evaluation and development of RFID systems Description The USB-B1 v2 module is an expansion of the RFID B1 module - the second in an evolving family of 13.56 MHz sub assemblies from Eccel Technology Ltd (IB Technology). The product is designed with both embedded applications and computing / PLC platforms in mind. This product is an ideal design choice if the user wishes to add RFID capability to their design quickly and without requiring extensive RFID and embedded software expertise and time. An on board low power ARM microcontroller handles the RFID configuration setup and provides the user with a powerful yet simple command interface to facilitate fast and easy read/write access to the memory and features of the various transponders supported by this module. 2 1.2 System Overview The USB-B1 v2 device is an extension of our RFID B1 module. Below, In Figure 1-1 the System Diagram is presented. 5V to 3.3V Voltage Converter +5V PCB RFID Antenna +3.3V USB Type B Connector (J1) FTDI FT234XD USB to Com Port Converter UART RFID B1 Module ANT Signals RFID Antenna Switch (J8 and J9) +3.3V IO + Peripherals +5V Header Connector (J3) External RFID Antenna Connector (J10) Figure 1-1 System Diagram 1.3 Features Parameter Typical Value Range (dependent upon antenna dimensions and tuning, tag: MIFARE Classic® 1K ISO card) a)       PCB antenna (on board) b)      External PCB antenna 50x50mm (RFID-ANT1356-50x50-300 v1) c)       External PCB antenna 25x25mm (RFID-ANT1356-25x25-300 v1) Nominal RF frequency Supported tags Time needed to read the whole tag memory (MIFARE Classic® 1K) Time needed to write the whole tag memory (MIFARE Classic® 1K) Width x Length Table 1-1 3 up to 50 mm up to 70 mm up to 40 mm 13.56 MHz MIFARE Classic®, MIFARE Ultralight®, NTAG2® 0.5 s 0.6 s 75 x 50 mm 1.4 Connectors Micro USB Connector (J1) External Antenna Connector (J10) External/PCB Antenna Selection Connectors (J8 and J9) IO and Peripherals Configuration Header (J3) Picture 1-1 In Picture 1-1 there are marked connectors available for the user when working with the USB-B1 v2 device. The connectors used on the USB-B1 v2 are described below. 1.4.1 USB Connector (J1) The device provides communication and power via USB connector J1. It is a micro USB Type B connector. The USB port, connected to the FTDI FT234XD chip provides USB to COM Port functionality. The user can configure the COM Port with a baud rate up to the maximum allowed by the RFID B1 module. 4 1.4.2 External Antenna Connector (J10) The user has the option to work with an external RFID antenna connected to the USB-B1 v2 device. Connector J10 is where this should be connected. Eccel Technology Ltd provides a variety of RFID antennas which the user can use together with this device. J10 – External Antenna Socket 1.4.3 External / PCB Antenna Selection Connectors J8 and J9 To switch between the PCB antenna and an external antenna, two jumpers have to be used with the J8 and J9 connectors. These jumpers (J8 and J9) are not mounted by default. J8,J9 – Antenna selection header J8,J9 – Antenna selection header EXTERNAL ANTENNA PCB ANTENNA REMARK: Also remove resistors: R13 and R14 Before connecting an external antenna the user should remove the R13 and R14 resistors. These resistors are mounted by default and connect the RFID chip to the internal PCB antenna. We recommend using our external antennas from series RFID-ANT1356-50X50-xxx, where xxx is the cable length in mm. They have a read range of about 70mm, 50x50mm in size and 300 or 800mm cable length. We can also design antennas with higher read range and custom dimensions on request. More information about antennas: https://eccel.co.uk/product-category/antennas/ 5 1.4.4 IO and Peripheral Configuration Header The device PCB connects the pins on this header to all IOs and peripherals provided by the onboard RFID B1 module and a few pins are available providing +3.3V and GND signals. J3.1 – GPIO 0 J3.2 – GPIO 2 J3.3 – GPIO 1 J3.4 – GPIO 3 J3.5 – GND J3.6 – 3.3 V J3.7 – IDAC (Digital to Analog Converter with current-type output) J3.8 – GND J3.9 – COMP (Comparator positive input) J3.10 – GND J3.11 – ADC (Analog to Digital Converter input) J3.12 – GND J3.13 – GND J3.14 – nRST (nRESET – reset input signal – active low) J3.15 – nSLEEP (Output signal indicating the device is in Sleep Mode or Power Down Mode – active low) J3.16 – nPWRDN (Power Down Request input signal – active low) 1.5 LEDs There are 3 LEDs installed on the board. Each of them has its own functionality: • • • LED1 – indicates that the reader is powered. LED2 – indicates data transmission via UART interface. The Functionality of LED2 can be configured in the internal MTP (Multiple-Time Programmable) memory of the FT234XD chip using the software utility FT_PROG which can be downloaded from the FTDI Utilities (click here). LED3 – indicates a tag presence in the reader antenna field. All of the LEDs are marked in green in Figure 4-1. 6 2. Electrical Characteristics 2.1 Test Conditions Typical device parameters were measured at an ambient temperature 22°C ±3°C and using a power supply of 5V ±5%. 2.2 Absolute Maximum Ratings Symbol TS Parameter Storage Temperature Min -40 Max 150 Unit °C VUSBMAX VIOMAX USB Supply Voltage 0 5.5 V Input Pin Voltage -0.3 3.5 V IIOMAX Output Pin Current 0 6 mA IANT ANT1 and ANT2 Current 0 100 mA Notes Maximum continuous current. This depends upon the impedance of the circuit between ANT1 and ANT2 at 13.56MHz. Table 2-1 2.3 Operating Conditions Symbol Parameter Min Max Unit TO Ambient Temperature -25 85 °C VUSB USB Supply Voltage 4.5 5.5 V V3V3 +3.3V Generated Voltage 3.235 3.365 V Table 2-2 2.4 GPIO Symbol Parameter VIOIL Input Low Voltage VIOIH Input High Voltage IIOMAX Output Pin Current IIOLEAK Input Leakage Current Internal ESD Series Resistor IO Pin Histeresis RIOESD V IOHYST Min Typ Max Unit 0.3V3V3 V 0.7V3V3 V ± 0.1 200 0.1V 3V3 Notes ±6 mA ± 40 nA Ω V Table 2-3 7 High impedance IO connected to V3V3 or GND. 2.5 Antenna Output Symbol fANT fANTAG VANTH VANTL IANT Par ameter Min Antenna Signal Frequency Antenna Signal Frequency Aging Antenna High Level Output Voltage Antenna Low Level Output Voltage ANT1 and ANT2 Current Typ M ax Unit Notes MHz ±30 ppm (-20°C - 70°C). ppm At 25°C. V IANT = 80mA. 0.64 V IANT = 80mA. 100 mA Maximum continuous current. This depends upon the impedance of the circuit between ANT1 and ANT2 at 13.56MHz. 13.56 0 3 V3V3 - 0.64 0 60 Table 2-4 2.6 Flash Symbol Parameter Min CFE Flash Erase Cycles Before Failure Typ Max Unit 20000 cycles TFDR Flash Data Retention Time 10 20 years years Notes For ambient temperature < 85°C For ambient temperature < 70°C Table 2-5 2.7 IDAC IDAC Parameters Source Current drop at Temperature Nominal Range No Range [µA] Step Size [nA] Vdd - 100 mV coefficient Current [µA] [%] [nA/°C] Precision 0 1 2 3 < 0 ; 1.6 > ( 1.6 ; 4.7 > ( 4.7 ; 16 > ( 16 ; 64 > 50 100 500 2000 0.85 3.2 8.5 34 0.79 0.75 1.22 3.54 0.3 0.7 2.8 10.9 Table 2-6 8 Voltage coefficient [nA/V] 11.7 38.4 96.6 159.5 Sink Temperature Voltage Current drop at coefficient coefficient 200 mV [%] [nA/°C] [nA/V] 0.3 0.32 0.62 1.75 0.2 0.7 2.8 10.9 12.5 40.9 94.4 148.6 Figure 2-1 Source Current 9 Figure 2-2 Sink Current 10 2.8 PWM PWM Parameters Period Frequency Minimum Maximum Minimum Maximum Maximum Error [µs] [s] [Hz] [kHz] [%] 4.81 3.19 0.313 207.9 3 Table 2-7 2.9 ADC Symbol Parameter Min Typ Max Unit Notes VADCIN Input Voltage Range 0 IADCIN Input Current 2.5 V Internal 2.5V reference voltage used. 100 nA CADCIN Input Capacitance 2 pF RADCIN Input On Resistance 1 MΩ Table 2-8 2.10 Comparator Symbol Parameter Min VCMPIN Input Voltage Range 0 VCMPOFST Offset Voltage -12 VCMPHYST Hysteresis Typ 0 50 Max Unit V3V3 V 12 mV mV Table 2-9 11 Notes 3. Installation and operation From the system and functionality point of view, the USB-B1 v2 device gives the same features as the RFID B1 module, and the user should refer to the RFID B1 User Manual when working with the USB-B1 v2. The FTDI chip expands the communication interface to the on-board RFID B1 module and allows the board to be connected to a computer and communicate with the device via a USB Com Port. Most systems have built-in drivers for such a Com Port. For a quick test, the user can connect the USB-B1 v2 to a computer and then start the B1-client application which allows the user to test all features of the device. The B1-client along with its user guide can be downloaded from here. HOST USB Cable Figure 3-1 Connection to the host system. The best read range can be achieved when the tag is parallel to the surface of the reader. Figure 3-2 The correct way to read a RFID tag 12 The USB-B1 v2 can also operate in a stand-alone mode. The user can control all GPIO’s and add tags to the whitelist (a list of defined tags). For easy configuration of polling parameters we provide the B1 Stand-Alone Configurator application which can be downloaded from here. This application allows the user to simply search for a new tag, add it to the whitelist, configure polling parameters, enable/disable all of GPIOs and control them. For more information please refer to the RFID-B1 User Manual. Figure 3-3 The main window of the B1 Stand-alone Configurator 13 4. Mechanical Dimensions Dimensions in mm. All LEDs are marked with green circles. Figure 4-1 14 MIFARE, MIFARE Ultralight, MIFARE Plus, MIFARE Classic, and MIFARE DESFire are trademarks of NXP B.V. No responsibility is taken for the method of integration or final use of the B1 based modules More information about the B1 module and other products can be found at the Internet site: http://www.eccel.co.uk or alternatively contact ECCEL Technology (IB Technology) by e-mail at: sales@eccel.co.uk 15