TECHNICAL INFORMATION MANUAL Revision 0.
Visit the Lepton3 R3100C web page, you will find the latest revision of data sheets, manuals, certifications, technical drawings, software and firmware. All you need to start using your reader in a few clicks! Scope of Manual The goal of this manual is to provide the basic information to work with the Lepton3 R3100C Reader. Change Document Record Date 07/04/2022 20/09/2022 Revision 0 0.
those pertaining to warranty, patent infringement, and limitation of liability. No responsibility is assumed by CAEN RFID for the use of this information, including use of this information as the basis for manufacture or sale of any items, or for infringement of patents or other rights of third parties. Federal Communications Commission (FCC) Notice (Preliminary) This device was tested and found to comply with the limits set forth in Part 15 of the FCC Rules.
Index 1 2 3 4 5 Scope of Manual ........................................................................................................................................................................2 Change Document Record .......................................................................................................................................................2 Reference Document..............................................................................................................
List of Figures Fig. 1.1: Lepton3 Reader – top view ....................................................................................................................................................6 Fig. 1.2: Lepton3 Reader – back view .................................................................................................................................................6 Fig. 3.1: Lepton3 R3100C - Example of Block Diagram ..........................................................................
1 INTRODUCTION Description Reader The Lepton3 (Model R3100C), an embedded reader of the easy2read© product line, is an ultra compact reader for low power, high performance RAIN RFID applications. With programmable output power from 10dBm to 25dBm, the reader can detect tags at more than 2 mt of distance (depending on antenna and tag dimensions). Due to its low power consumption, the module is specifically designed to be easily integrated in battery powered devices.
2 TECHNICAL SPECIFICATIONS Technical Specifications Frequency Range 865.600÷867.600 MHz (ETSI EN 302 208 v3.3.1) 902÷928 MHz (FCC part 15.
Key Features RAIN RFID (UHF EPC Class1 Gen2, ISO 18000-63) compliant Both ETSI and FCC support in the same module Ultra compact size Up to 25 dBm (316mW) output power -72 dBm Rx sensitivity, assuming 20 dB antenna return loss Impinj RS500 and RS1000 pin-to-pin compatibility Inventory (FastID, Tag Population Estimate, Select, Session, Target) Access (Read, Write, Lock, Kill, BlockPermalock, and QT) Shielded to prevent unwanted radiation and provide noise immunity in embedde
3 HARDWARE INTERFACE Introduction An example Lepton3 R3100C system-level block diagram for an embedded system is shown in Fig. 3.1: Lepton3 R3100C - Example of Block Diagram. This figure shows the electrical connections that may and must be made to control the Lepton3 R3100C. In the figure, the required connections are illustrated with solid lines. Recommended and optional connections are illustrated with different dotted and dashed line patterns.
Fig. 3.2: BSL sequence The BSL program execution starts when TST pin has received a minimum of two positive transitions and if TST is high while /RST rises from low to high. BSL_SEL shall be at high level before BSL starts. Pulses length and distance between edges of all signals shall be 10ms at least. • UART2 Tx and Rx may be used to examine debug information. Optional connections: • GPIOs allow interaction with the Lepton3 R3100C as both digital inputs and outputs.
Device Input and Output Specifications paragraph page 16. Excessive current sunk or sourced on the GPIO pins can also cause electrical damage to the device. Y Warning: Voltages outside of the maximum IO operating voltage range of -0.3 to 4.0 V should not be applied to the UART pins. This can cause permanent damage to the device. Reset Pin The Lepton3 R3100C may be reset by a logic low voltage on the NRST pin (pin 9). Usage of this pin is recommended in all designs.
Wakeup Pin The WKUP pin is used to wake the device when it is in the Standby or Sleep operating modes. This pin is edge sensitive and will wake the device on a rising edge. The WKUP pin must be logic low in order for the device to re-enter Idle mode after a Sleep wakeup, so it should only be pulsed high to wake up the part. The WKUP pin operates at a 3.3 V logic level. It has a 35 kΩ typical pull-down resistor inside the Lepton3 R3100C. Voltages outside of the maximum IO operating voltage range of -0.
Pin# 1 2 3 4 5 6 7 8 9 Pin Name RF GND RFU BSL_SEL GND TST UART1-RX UART1-TX NRST Pin Type RF Power Digital I/O Digital Input Power Digital Input Digital Input Digital Output Digital Input 10 11 12 13 14 15 16 17 18 19 20 21 22 23-32 GND VDC_IN WKUP RFU1 UART2-TX UART2-RX RFU2 GPIO1 GPIO2 GPIO3 GPIO4 STATUS HEALTH GND Power Power Digital Input Analog Input Digital Output Digital Input Analog output Digital I/O Digital I/O Digital I/O Digital I/O Digital Output Digital Output Power Description RF anten
Operating Conditions This section describes operating voltage, frequency, and temperature specifications for the Lepton3 R3100C during operation. Parameter Supply Temperature Min. 3.2 -20 902 865.6 Frequency Max. 5.25 +70 928 867.6 Unit V ºC MHz MHz Conditions VDC_IN relative to GND Ambient Temperature FCC part 15.247 ETSI EN 302 208 v3.3.1 Tab. 3.
UHF Gen 2 RFID Radio Specifications Parameter Frequency Min. 902 865.6 Typ. Input impedance Input match Rx sensitivity Max. 928 867.6 50 -10 -72 Unit MHz MHz Ω dB dBm Conditions See § Tab. 2.1: Lepton3 R3100C Technical Specifications page 7 S11 10%PER, assuming 20 dB antenna RL @ 25 dBm output Tab. 3.6: RF Receiver Specifications Parameter Min. Tx Power Max. 10 Tx Power Error Return Loss Frequency Unit 25 1 0 865.6 902 dBm dB dB 867.
Device Input and Output Specifications Parameter nRST VIL VIH Hysteresis voltage Internal pull-up resistor Reset pulse width WKUP VIL VIH Hysteresis voltage Internal pull-down resistor Digital inputs VIL VIH Hysteresis voltage Internal pull-down resistor Digital outputs VOL VOH Drive current (sink or source) UART Default baud rate Configurable baud rate Data bits Parity bit Stop bits Min. Typ. -0.3 2 14 25 0.8 3.6 400 21 -0.3 2 20 25 0.8 3.6 400 35 -0.3 2 20 Max. 50 0.8 3.6 400 35 0.0 2.
4 LAYOUT AND COMPONENTS Introduction This section describes hardware aspects of embedded RAIN RFID readers based on the Lepton3 R3100C. PCB Layout for RF 50 Ohm Characteristic Impedance As discussed in paragraph The Lepton3 R3100C is powered by a voltage applied to the VDC_IN pin (pin 11) relative to the GND pins. The supply voltage operating range is 3.2V to 5.25V. Current consumption varies from about 800 mA to about 5mA depending on the operating mode.
Fig. 4.1: PCB Transmission Line Types In most PCB designs, many of the parameters of the PCB are already set, such as dielectric thickness and constant, trace conductivity and weight, etc. Usually, the only variables that can be easily modified are the style of transmission line, and its dimensions. The most common, and recommended PCB transmission line scheme is to use a microstrip on the top or bottom layer of the PCB, with a ground plane on the layer immediately adjacent as a return path.
Fig. 4.2: Package Dimensions, Top, Front, and Side Views Download the Lepton3 R3100C Technical drawing at Lepton3 R3100C web page (Documents section).
PCB Footprint Recommended footprint copper and pastemask dimensions are shown in the following: Fig. 4.3: Recommended Etched Copper Footprint – All Pads SMT Reflow Information The solder manufacturer’s recommended reflow profile is shown in the following figure: Fig. 4.
Moisture Sensitive Level 3 (MSL 3) CAEN RFID srl follows JEDEC standards for moisture classifications. The Lepton3 R3100C RFID reader is classified as MSL 3. Y Warning: The damaging effects of moisture absorbed in semiconductor packages during SMT assembly are known. Pay attention to the next paragraphs and follow the instructions to avoid problems.
5 REGULATORY COMPLIANCE RoHS EU Directive The Lepton3 R3100C RFID Reader is compliant with the EU Directive 2015/863/EU on the Restriction of the Use of certain Hazardous Substances in Electrical and Electronic Equipment (RoHS3). FCC Compliance 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.
d. This transmitter module is authorized to be used in other devices only by OEM integrators under the following conditions: 1. The RFID Module antenna shall have a separation distance of at least 20cm from all persons 2. The host integrator shall provide the information related to the antenna separation distance in the user’s manual of his product 3. The transmitter module must not be co-located with any other antenna or transmitter e.
