TR-75D
14Pages

Data Sheet (««arpSmarter Wireless. Simply. © 2018 IQRF Tech s.r.o. www.iqrf.tech www.iqrf.org Datasheet TR-75D 180627 Page 1

Description TR-75D is a family of IQRF transceiver modules operating in the 868 MHz and 916 MHz license free ISM (Industry, Scientific and Medical) frequency band. Its highly integrated ready-to-use design containing MCU, RF circuitry, serial EEPROM and on-board antenna requires no external components. Vertical mounting and very small dimensions allow space saving. Extended RF power results in higher RF range. Extra low power consumption fits for battery powered applications. MCU with built-in operating system significantly reduces application development time. Optional DPA framework...

The information contained in this publication regarding device applications and the like is provided only for your convenience and may be superseded by updates. It is your responsibility to ensure that your application meets your specifications. IQRF Tech MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND TO STATED CONDITION, QUALITY, PERFORMANCE, MERCHANTABILITY OR FITNESS FOR PURPOSE and disclaims all liability arising from this information and its use. Use of IQRF Tech devices in life support and/or safety applications is entirely at the buyer’s risk, and the buyer agrees to...

Absolute maximum ratings Stresses above listed maximum values may cause permanent damage to the device and affect device reliability. Functional operation under these or any other conditions beyond those specified is not supported. Supply voltage (Vcc) Voltage on I/O pins (configured as inputs) vs. GND Storage temperature Ambient temperature under bias Caution: Electrostatic sensitive device. Observe appropriate precautions for handling. Basic components For more information refer to datasheets of ICs used. © 2018 IQRF Tech s.r.o. www.iqrf.tech www.iqrf.org Datasheet TR-75D 180627 Page 4

Vcc Power supply voltage Interrupt / Wake-up on change (IOC) RFPGM / (X)LP mode termination AN11 Analog A/D input IO / ADC / -SS / COUT RA5 General I/O pin AN4 Analog A/D input -SS SPI Slave select C2OUT Comparator output IO / SDO RC5 General I/O pin SCK SPI clock input IN RE3 General input only pin IO / ADC / C-IN RA0 General I/O pin Note 1: Pin Q4 is used as output and pin Q5 as input during initial ~200 ms boot-up (after power supply rising-up) to detect programming mode. That is why these two pins should not be interconnected to each other. There are no on-board...

Recommended circuit for development * Decoupling capacitor. The value depends on application hardware. * * Pull-down resistor reccomended to avoid unintentional switching to PGM due to SDO - SDI cross-talk during TR boot (in case of long wires or similar breach ofPCB design rules) For development, it is recommended to implement the following arrangement: • Decoupling capacitor on Vcc to filter the supply voltage. The type and the value should be selected with respect to general rules observed in electronic design, according to given application hardware and power source. • Serial protective...

TR-75D RF range RF range strongly depends on the following design aspects:  Hardware:  Construction of the devices (especially TR location within the device, PCB layout, ground planes, conductive areas and bulk objects such as metallic parts and batteries in the nearest surroundings, with respect to possible reflections and counterpoise effect). To achieve an efficient range and reliable connectivity, no parts impacting the range must be placed close to the built-in meander antenna. Even non-conductive parts can significantly impact the range.  Physical arrangement of devices (especially...

Diagram 2A: Effective radiated power (ERP) vs. level in the setRFpower(level) function. TR-75DA, 868 MHz band, channels 0 to 67. Refer to IQRF OS Reference guide. Diagram 2B: Effective radiated power (ERP) vs. level in the setRFpower(level) function. TR-75DA, 916 MHz band. Refer to IQRF OS Reference guide. Diagram 2C: Relative RF range vs. level in the setRFpower(level) function. TR-75DA, 868 MHz and 916 MHz bands. Refer to IQRF OS Reference guide.

Diagram 3A: Relative effective radiated power (ERP) vs. channel, with respect to channel 52 (100 %). TR-75DA, 868 MHz band. Diagram 3B: Relative effective radiated power (ERP) vs. channel, with respect to channel 104 (100%). TR-75DA, 916 MHz band. Diagram 4: Relative RF range vs. level in the checkRF(level) function in STD, LP and XLP RX modes. Refer to IQRF OS Reference guide.

Diagram 5: Relative RF range vs. antenna height above the ground. TR-75DA, 868 MHz and 916 MHz bands. © 2018 IQRF Tech s.r.o. www.iqrf.tech www.iqrf.org Datasheet TR-75D 180627 Page 10

Hardware revision • TR-75DA v1.00 First release. © 2018 IQRF Tech s.r.o. www.iqrf.tech www.iqrf.org Datasheet TR-75D 180627 Page 11

TR-75D Application Users have to ensure observing local provisions and restrictions relating to the use of short-range devices by software, e.g. the CEPT ERC/REC 70-03 Recommendation and subsequent amendments in EU. See IQRF video tutorial set on www.iqrf.org/videos. Recommended PCB layout Sealing In case of sealing or protecting TR modules against a harsh environment by coating, encapsulating or potting using a lacquer, gel or other filling matter, the ion cleanness of the TR modules must be less than 1 µg/cm 2 of NaCl equivalent otherwise there is a risk of corrosion. Such a surface...

Product information Ordering codes T R-75D A Antenna A - PCB antenna Transceiver series. TR / DCTR are not differentiated from IQRF OS v4.02D. • 180627 Diagram 2C added. Decoupling capacitor added to Recommended circuit for development. • 180130 Block diagram revised. RF parameters in chapter Electrical specifications revised. A bug in Note 1 in pin description table fixed. Chapter RF range extended. Directives in Quality management updated. • 171108 First release. Preliminary. © 2018 IQRF Tech s.r.o. www.iqrf.tech www.iqrf.org Datasheet TR-75D 180627 Page 13