TRM-915-R250

TRM-915-R250 Datasheet

TRM-915-R250 RF Transceiver Module

Part	Datasheet
TRM-915-R250	TRM-915-R250 (pdf)

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TRM-915-R250 RF Transceiver Module Data Guide ! Warning Linx radio frequency "RF" products may be used 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. No Linx Technologies product is intended for use in any application without redundancies where the safety of life or property is at risk. The customers and users of devices and machinery controlled with RF products must understand and must use all appropriate safety procedures in connection with the devices, including without limitation, using appropriate safety procedures to prevent inadvertent triggering by the user of the device and using appropriate security codes to prevent triggering of the remote controlled machine or device by users of other remote controllers. 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. Table of Contents Description Ordering Information Absolute Maximum Ratings Electrical Specifications Pin Assignments Pin Descriptions Theory of Operation Module Description Module Operation Low-Power States Reset to Factory Default Compatibility Mode Automatic Gain Control and Manual Gain Control Exception Engine Networking Modes Extended Preamble Voltage Supply Rise Time Using the Buffer Empty BE Line Using the Exception EX Line Using the Processing Incoming Packet PR_PKT Line Receive Signal Strength Indication RSSI Using the RESET Line Using the Command Response CMD_RSP Line The CMD Line The UART Interface Configuration Command Formatting Module Configuration Writing to Registers Reading from Registers Configuration Registers Typical Applications Power Supply Requirements Antenna Considerations Helpful Application Notes from Linx Interference Considerations Microstrip Details Pad Layout Board Layout Guidelines Production Guidelines Hand Assembly Automated Assembly General Antenna Rules Common Antenna Styles Regulatory Considerations A large-print version of this document is available at TRM-915-R250 RF Transceiver Module Data Guide 30.48mm The 250 Series RF transceiver module is designed for reliable bi-directional transfer of serial data over distances of up to 4 miles 6.4km line of sight. Operating in the 902 to 30.48mm 928MHz frequency band, the module is capable of generating +23.5dBm into a 50-ohm load and achieves an outstanding typical sensitivity of This high output power gives the module exceptional range and also helps 4.32mm overcome noisy environments at shorter ranges. Figure 1 Package Dimensions The module implements a Frequency Hopping Spread Spectrum FHSS protocol along with networking and assured delivery features. It has a Universal Asynchronous Receiver Transmitter UART serial interface that can be directly connected to microcontrollers, RS-232 converters or USB adaptors. The module automatically handles all radio functions resulting in a UART-to-antenna wireless link. All configuration settings and data are accessed through the UART interface. Features • True UART to antenna solution • Frequency Hopping FHSS • 153.6kbps max RF data rate • Includes robust protocol CSMA, assured delivery, addressing • Low Power Standby, Sleep and Deep Sleep modes • Adjustable output power • 32-bit unique address • 5 volt tolerant I/O Applications • Direct RS-232/422/485 Wire replacement • Asset tracking • Automated meter reading • Industrial/home automation • Wireless sensors • Remote data logging • Fleet management • Traffic and display signs • Mass-transit communications • Oil and gas sensing • Long-range data links Ordering Information Ordering Information Product Part No. Description Radiotronix Part No. TRM-915-R250 Embedded Wireless Module, 250mW 900MHz Wi.232FHSS-250-R Embedded Wireless TRM-915-R250-CFT Module, 250mW 900MHz , Mexico Wi.232-FHSS-250-CFTC-R EVM-915-250-FCx Pinned, Pre-Certified Module, 250mW 900MHz Wi.232FHSS-250-FCC-xx-R EVM-915-250-CFx Pinned, Pre-Certified Module, 250mW 900MHz , Mexico Wi.232FHSS-250-FCC-CFTC-xx-R x = ‘R’ for right angle connector, ‘S’ for straight connector Transceivers are supplied in trays of 50 pieces Figure 2 Ordering Information Absolute Maximum Ratings Absolute Maximum Ratings Supply Voltage Vcc Any Input or Output Pin Max Supply Voltage Rise Time GND to 2.7V Max RF Input Operating Temperature Storage Temperature Exceeding any of the limits of this section may lead to permanent damage to the device. Furthermore, extended operation at these maximum ratings may reduce the life of this device. Figure 3 Absolute Maximum Ratings Warning This product incorporates numerous static-sensitive components. Always wear an ESD wrist strap and observe proper ESD handling procedures when working with this device. Failure to observe this precaution may result in module damage or failure. Electrical Specifications 250 Series Transceiver Specifications Parameter Symbol Min. Power Supply Operating Voltage TX Supply Current lCCTX RX Supply Current lCCRX Standby Current lSTD Sleep Current lSLP Deep Sleep Current IDSLP RF Section Operating Frequency Band Center Frequency Accuracy Number of Channels Channel Spacing Hop Sequences Max Data Rate Antenna Port RF Impedance Environmental Operating Temp. Range Receiver Section Receiver Sensitivity 9.6kbps 38.4kbps

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TRM-915-R250 RF Transceiver Module

Data Guide
! Warning Linx radio frequency "RF" products may be
used 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. No Linx Technologies product is intended for use in any application without redundancies where the safety of life or property is at risk.

The customers and users of devices and machinery controlled with RF products must understand and must use all appropriate safety procedures in connection with the devices, including without limitation, using appropriate safety procedures to prevent inadvertent triggering by the user of the device and using appropriate security codes to prevent triggering of the remote controlled machine or device by users of other remote controllers.

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.

Table of Contents
Description Ordering Information Absolute Maximum Ratings Electrical Specifications Pin Assignments Pin Descriptions Theory of Operation Module Description Module Operation Low-Power States Reset to Factory Default Compatibility Mode Automatic Gain Control and Manual Gain Control Exception Engine Networking Modes Extended Preamble Voltage Supply Rise Time Using the Buffer Empty BE Line Using the Exception EX Line Using the Processing Incoming Packet PR_PKT Line Receive Signal Strength Indication RSSI Using the RESET Line Using the Command Response CMD_RSP Line The CMD Line The UART Interface Configuration Command Formatting Module Configuration Writing to Registers Reading from Registers

Configuration Registers Typical Applications Power Supply Requirements Antenna Considerations Helpful Application Notes from Linx Interference Considerations Microstrip Details Pad Layout Board Layout Guidelines Production Guidelines Hand Assembly Automated Assembly General Antenna Rules Common Antenna Styles Regulatory Considerations

A large-print version of this document is available at

TRM-915-R250 RF Transceiver Module

Data Guide
30.48mm

The 250 Series RF transceiver module is
designed for reliable bi-directional transfer
of serial data over distances of up to 4 miles 6.4km line of sight. Operating in the 902 to
30.48mm
928MHz frequency band, the module is capable
of generating +23.5dBm into a 50-ohm load
and achieves an outstanding typical sensitivity
of This high output power gives the module exceptional range and also helps
4.32mm
overcome noisy environments at shorter ranges. Figure 1 Package Dimensions

The module implements a Frequency Hopping Spread Spectrum FHSS protocol along with networking and assured delivery features. It has a Universal Asynchronous Receiver Transmitter UART serial interface that can be directly connected to microcontrollers, RS-232 converters or USB adaptors. The module automatically handles all radio functions resulting in a UART-to-antenna wireless link. All configuration settings and data are accessed through the UART interface.

Features
• True UART to antenna solution
• Frequency Hopping FHSS
• 153.6kbps max RF data rate
• Includes robust protocol CSMA,
assured delivery, addressing
• Low Power Standby, Sleep and Deep Sleep modes
• Adjustable output power
• 32-bit unique address
• 5 volt tolerant I/O

Applications
• Direct RS-232/422/485 Wire
replacement
• Asset tracking
• Automated meter reading
• Industrial/home automation
• Wireless sensors
• Remote data logging
• Fleet management
• Traffic and display signs
• Mass-transit communications
• Oil and gas sensing
• Long-range data links
Ordering Information
Ordering Information

Product Part No. Description

Radiotronix Part No.

TRM-915-R250

Embedded Wireless Module, 250mW 900MHz

Wi.232FHSS-250-R

Embedded Wireless TRM-915-R250-CFT Module, 250mW
900MHz , Mexico

Wi.232-FHSS-250-CFTC-R

EVM-915-250-FCx

Pinned, Pre-Certified Module, 250mW 900MHz

Wi.232FHSS-250-FCC-xx-R

EVM-915-250-CFx

Pinned, Pre-Certified Module, 250mW 900MHz , Mexico

Wi.232FHSS-250-FCC-CFTC-xx-R
x = ‘R’ for right angle connector, ‘S’ for straight connector Transceivers are supplied in trays of 50 pieces
Figure 2 Ordering Information

Absolute Maximum Ratings

Absolute Maximum Ratings

Supply Voltage Vcc Any Input or Output Pin

Max Supply Voltage Rise Time GND to 2.7V

Max RF Input

Operating Temperature

Storage Temperature

Exceeding any of the limits of this section may lead to permanent damage to the device. Furthermore, extended operation at these maximum ratings may reduce the life of this device.

Figure 3 Absolute Maximum Ratings

Warning This product incorporates numerous static-sensitive components. Always wear an ESD wrist strap and observe proper ESD handling procedures when working with this device. Failure to observe this precaution may result in module damage or failure.

Electrical Specifications
250 Series Transceiver Specifications

Parameter

Symbol Min.

Power Supply

Operating Voltage TX Supply Current
lCCTX

RX Supply Current
lCCRX

Standby Current
lSTD

Sleep Current
lSLP

Deep Sleep Current

IDSLP

RF Section

Operating Frequency Band

Center Frequency Accuracy

Number of Channels

Channel Spacing

Hop Sequences

Max Data Rate

Antenna Port

RF Impedance

Environmental

Operating Temp. Range

Receiver Section

Receiver Sensitivity
9.6kbps
38.4kbps

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived TRM-915-R250 Datasheet file may be downloaded here without warranties.

Datasheet ID: TRM-915-R250 645793