HUM-900-PRO

HumPRO TM Series 900MHz RF Transceiver Module Data Guide ! Warning: Some customers may want Linx radio frequency (“RF”) products to control machinery or devices remotely, including machinery or devices that can cause death, bodily injuries, and/or property damage if improperly or inadvertently triggered, particularly in industrial settings or other applications implicating life-safety concerns (“Life and Property Safety Situations”). Table of Contents 1^ 1^ 2^ NO OEM LINX REMOTE CONTROL OR FUNCTION MODULE SHOULD EVER BE USED IN LIFE AND PROPERTY SAFETY SITUATIONS. No OEM Linx Remote Control or Function Module should be modified for Life and Property Safety Situations. Such modification cannot provide sufficient safety and will void the product’s regulatory certification and warranty. 2^ 3^ 5^ 10^ 10^ Customers may use our (non-Function) Modules, Antenna and Connectors as part of other systems in Life Safety Situations, but only with necessary and industry appropriate redundancies and in compliance with applicable safety standards, including without limitation, ANSI and NFPA standards. It is solely the responsibility of any Linx customer who uses one or more of these products to incorporate appropriate redundancies and safety standards for the Life and Property Safety Situation application. 12^ 13^ 14^ 15^ 16^ 18^ 20^ 20^ 21^ 22^ 23^ 23^ 24^ 25^ 29^ 30^ 32^ 33^ 34^ 34^ 35^ Do not use this or any Linx product to trigger an action directly from the data line or RSSI lines without a protocol or encoder/ decoder to validate the data. Without validation, any signal from another unrelated transmitter in the environment received by the module could inadvertently trigger the action. All RF products are susceptible to RF interference that can prevent communication. RF products without frequency agility or hopping implemented are more subject to interference. This module does have a frequency hopping protocol built in, but the developer should still be aware of the risk of interference. Do not use any Linx product over the limits in this data guide. Excessive voltage or extended operation at the maximum voltage could cause product failure. Exceeding the reflow temperature profile could cause product failure which is not immediately evident. Do not make any physical or electrical modifications to any Linx product. This will void the warranty and regulatory and UL certifications and may cause product failure which is not immediately evident. Description Features Ordering Information Absolute Maximum Ratings Electrical Specifications Typical Performance Graphs Pin Assignments Pin Descriptions Pre-Certified Module Pin Assignments Module Dimensions Theory of Operation Module Description Overview Addressing Modes Automatic Addressing Address Register Use Acknowledgements and Assured Delivery Frequency Hopping Spread Spectrum Compatibility with the 250 Series Networking Transmitting Packets Receiving Packets Using the Buffer Empty (BE) Line Exception Engine Carrier Sense Multiple Access (CSMA) Using the Command Response (CRESP) Line Using the CMD Line External Amplifier Control AES Encryption  38^ 39^ 40^ 40^ 42^ 43^ 44^ 45^ 45^ 48^ 95^ 96^ 96^ 97^ 98^ 98^ 98^ 100^ 102^ 102^ 103^ 104^ 105^ 106^ 107^ 108^ 108^ 108^ 110^ 112^ 114^ Using the MODE_IND Line Using the PB Line Restore Factory Defaults Using the Low Power Features The Command Data Interface Reading from Registers Writing to Registers Command Length Optimization Example Code for Encoding Read/Write Commands The Command Data Interface Command Set Typical Applications Usage Guidelines for FCC Compliance Additional Testing Requirements Information to the user Product Labeling FCC RF Exposure Statement Antenna Selection Castellation Version Reference Design Power Supply Requirements Antenna Considerations Interference Considerations Pad Layout Microstrip Details Board Layout Guidelines Helpful Application Notes from Linx Production Guidelines Hand Assembly Automated Assembly General Antenna Rules Common Antenna Styles Regulatory Considerations HumPROTM Series 900MHz RF Transceiver Module Data Guide 0.55" (13.97) Description The HumPROTM Series is a frequency hopping spread spectrum (FHSS) transceiver designed for the reliable transfer of digital data. It has a very fast lock time so that it can quickly wake up, send data and go back to sleep, saving power in battery-powered applications. The module is available in the 915MHz frequency band. 0.45" (11.43) 0.07" (1.78) Figure 1: Package Dimensions The module has several features that increase the data transfer reliability. It ensures that no other modules are transmitting before it begins transmitting data. Automatic acknowledgements ensure that the remote side received valid data. Multiple hopping patterns enable several systems to operate in proximity without interference. A standard UART interface is used for module configuration and data transfer. A few simple serial commands are all that are needed for configuration. All modules have a unique 32-bit serial number that can be used as an address. Source and destination addressing support point-to-point and broadcast links. Address masking by the receiving module allows for creating subnets. Other network topologies can also be implemented. Housed in a tiny compact reflow-compatible SMD package, the transceiver requires no external RF components except an antenna, which greatly simplifies integration and lowers assembly costs. Versions are available that have obtained FCC and Industry Canada modular certification. Features • • • • • FHSS Algorithm Fast Lock (