Agrident GmbH, Steinklippenstr. 10, D-30890 Barsinghausen Phone +49 5105 582573-10 - Fax +49 5105 582573-17 ABR200 Integration Manual Firmware v1.
ABR200 Integration Manual © Copyright 2016 by Agrident GmbH TB All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without prior written permission of Agrident GmbH. Agrident GmbH reserves the right to make changes to any and all parts of this documentation without obligation to notify any person or entity of such changes.
ABR200 Integration Manual Content 1 Introduction .......................................................................................................... 4 2 Pinout .................................................................................................................. 5 3 Power Supply options .......................................................................................... 6 3.1 Power supply 2.2V – 4.5V ............................................................................
ABR200 Integration Manual 1 Introduction The ABR200 is a low frequency ISO11784/11785 compliant OEM RFID reader module working on 134.2 KHz. It has been designed for the integration into mobile devices like PDAs. The ABR200 is not intended to be used as a stationary reader. For stationary readers you should use a model from the ASR range. Agrident provides an Evaluation Board in order to make the development of an own software interface easier for customers.
ABR200 Integration Manual 2 Pinout The ABR200 has one connection terminal on the left side an another one on the right side. Each terminal has 10 pins and the pitch is 2.54mm. The pin assignment can be found in the table below. 1 2 3 4 5 6 7 8 9 10 Left USB-DP USB-DM UART-RXD UART-TXD GND GPIO1 GPIO2 GPIO3 GPIO4 GPIO5 Right Ant-1 Ant-2 (CP) Ant-3 (CP) GND ENABLE GND 5V-IN 5V-OUT GND BAT-IN The orientation of the drawing on the left side matches with the orientation of the picture on the right side.
ABR200 Integration Manual 3 Power Supply options The ABR200 is quite flexible concerning the choice of the power supply. The two different options for supplying the reader module with power are listed below. 2.2V – 4.5V DC (e.g. Lithium battery or 3 NiMH cells in series) 5V from voltage regulator (linear, stabilized, low ripple voltage) For both options the power supply should be stabilized as good as possible.
ABR200 Integration Manual 3.2 Power supply 5.0V In case the ABR200 should be supplied with 5.0V directly, the modules on-board boost converter is not used. The 5.0V have to be connected to the “5V-IN” pin of the reader. The pins “BAT-IN” and “5V-OUT” are not used here and should be left open. For switching on the ABR200s power supply, the “Enable” pin must be driven higher than 1.2V. The diagram above shows the connection in case of providing 5.0VDC.
ABR200 Integration Manual 3.3 Power supply from 5V USB A clean FDX signal is shown below. There is no noise present. The next screenshot shows the same signal but in this case the module is directly supplied from the USB port of a computer. The peaks you can see in the signal are caused by an instable USB voltage. The transmitter voltage on the module is not stable enough any longer and this causes the peaks in the signal.
ABR200 Integration Manual 3.4 The ENABLE pin The modules power supply has to be activated via the pin “Enable”. This applies to both power supply options, 2.2V to 4.5V or 5.0V. This pin must be driven higher than 1.2V - but 5.0V is the maximum - in order to switch on the ABR200. The maximum allowed voltage for keeping the reader deactivated is 0.4V. The Enable line has an on-board pull-down resistor of 1MΩ in order to prevent floating levels.
ABR200 Integration Manual The power consumption in this operating mode is shown below: 4,50 4,40 4,30 4,20 4,10 4,00 3,90 3,80 3,70 3,60 3,50 3,40 3,30 3,20 3,10 3,00 2,90 2,80 2,70 2,60 2,50 2,40 2,30 1700 1650 1600 1550 1500 1450 1400 1350 1300 1250 1200 2,20 Input Power in mW Input Voltage vs Input Power - RF on Input Voltage in V The power consumption decreases as the input voltage rises. This has to do with the efficiency of the ABR200s boost converter.
ABR200 Integration Manual 4.1.2 RF-off When the RF is not activated, the current consumption is much lower. Input Voltage vs Input Current - RF off 210 170 150 130 110 90 70 4,50 4,40 4,30 4,20 4,10 4,00 3,90 3,80 3,70 3,60 3,50 3,40 3,30 3,20 3,10 3,00 2,90 2,80 2,70 2,60 2,50 2,40 2,30 50 2,20 Input Current in mA 190 Input Voltage in V Anyway, this is not really a “power saving mode” because the input currents are still in a range between 80mA (at 4.5V) and 175mA (at 2.2V).
ABR200 Integration Manual 5 Interface options The ABR200 offers two different interface options, a UART interface and USB. Both are working independently of each other. Thus they could also be used simultaneously. 5.1 UART interface The modules UART interface is working on 3.3V level but the RxD line is 5V tolerant. The TxD line always transmits at 3.3V and thus level shifters might be required if your UART only works at 5V (i.e.: if your UART is not 3.3V tolerant).
ABR200 Integration Manual 5.2 USB interface The USB interface of the ABR200 is provided by the processor on the module. The interface uses USB-CDC (USB Communication Device Class). This is different to the previous reader module ABR105, which used an FTDI USB chip. The USB data lines (USB-DP and USB-DM) are using a level of 3.3V as per USB specification. The diagram above shows how to connect USB on the ABR200.
ABR200 Integration Manual 7 Connecting the antenna The antenna has to be connected between pin 1 and pin 2 of the terminal on the right side. The ABR200 comes with the on-board resonant circuit capacitors tuned for antennas with an inductance of 275µH. That means you cannot use antennas with a higher inductance at all. If your antenna has a smaller inductance than 275µH – maybe because you have an air-coil antenna – you can add more capacitance between pin 2 and pin 3 as shown in the diagram above.
ABR200 Integration Manual 8 Mechanical Dimensions 32,5mm L.1 13mm 26mm R.1 30mm Height Width Depth 9 26 mm 32,5 mm 8 mm Mounting the ABR200 The ABR200 does not need any mounting bolts. It can be soldered to the customers PCB directly. Since it has two 10-pin connectors, one on the left and the other one on the right side, no additional fixing is required.
ABR200 Integration Manual 10 International Approvals FCC and IC digital device limitations The FCC approval is only valid with the tested antenna “ANT002”. If other antennas should be used, the complete FCC Part 15 B test procedure has to be repeated! Any additional antenna may be used with this device, provided that the new antenna is from same type and has equal or lesser gain than the certified antenna(s).
ABR200 Integration Manual User Manual of the end-product: The end user has to be informed that any changes or modifications not expressly approved by the manufacturer could void the user’s authority to operate this equipment. FCC §15.
ABR200 Integration Manual 11 Trouble shooting For any problem please contact us: Agrident GmbH Steinklippenstr. 10 30890 Barsinghausen Germany Telephone FAX +49 5105 582573-10 +49 5105 582573-17 Mail: support@agrident.
