RF220UF1

DATASHEET RF220UF1 Module ©2022 Synapse Wireless, All Rights Reserved. All Synapse products are patent pending. Synapse , the Synapse logo, SNAP, and Portal are all registered trademarks of Synapse Wireless, Inc. Doc# 116-061507-008-G003 6723 Odyssey Drive // Huntsville, AL 35806 // (877) 982-7888 // synapsewireless.com SNAP Engine RF220UF1 Modules Overview The RF220UF1 SNAP Engine consists of an SM220UF1 on a carrier board. It is an IEEE 802.15.4, low-power, highly reliable solution for embedded wireless control and monitoring networks that require high data rates. The RF220UF1 embeds Synapse’s SNAP OS, the industry’s first Internet-enabled, wireless mesh network operating system, into the Atmel ATmega128RFA1 single-chip AVR® microcontroller with an integrated transceiver that delivers up to 2Mbits/ sec. This low-cost module can have current consumption under 390nA to enable a new generation of battery-driven systems. The RF220UF1 also includes a Skyworks SE2431L front-end module, which provides a power amplifier and LNA for increased range. SNAP’s on-board Python interpreter provides for rapid application development and over-the-air programming, while Atmel’s low-power RF single-chip design saves board space and lowers power consumption. The modules provide up to 15 channels of operation in the ISM 2.4GHz frequency band. By default, the SNAP operating system automatically forms a mesh network with other nodes immediately on receiving power. No further configuration is necessary. Multiple unrelated SNAP networks can exist within the same area through several configuration options outlined in the SNAP User Guide available from www.synapsewireless.com. NOTE: Channel 15 is receive-only due to FCC power restrictions. This data sheet covers part number RF220UF1: • 20 GPIO with up to 7 A/D inputs • 128k flash, 58.5k free for over-the-air uploaded user apps • Two UART ports for control or transparent data • Low power modes: • Timed Sleep Mode 1 : 1.27 µA • Timed Sleep Mode 2 : 1.47 µA • Untimed Sleep Mode : < 390 nA • Spread Spectrum (DSSS) technology • Up to 2 Mbps radio data rate • 2.4 GHz RF Frequency • AES 128-bit encryption • Integrated on-board compact F antenna or U.FL connecter • Solder-able or socket-able 1 • 4K internal EEPROM • 6 PWM outputs • Supports over the air firmware upgrades. (This process is further defined in the Portal User Guide.) Specifications Table 1.1: RF220UF1 Specifications at 23° C and 3.3V unless otherwise noted Outdoor LOS Range Performance Transmit up to +20 dBm Power Output RF Data Rate 250Kbps, 500Kbps, 1Mbps, 2Mbps Receiver Sensitivity -103 dBm (1% PER, 250Kbps) Supply Voltage 2.0 - 3.6 V Transmit Current (Typ@3.3V) at +20 dBm: 150 mA at +6 dBm: 55 mA Idle/Receive Power On Requirements (Typ@3.3V) 2 1 mile using u.fl antenna 22 mA Idle/Receive Off (Typ@3.3V) 7.8 mA Sleep Mode Current (Typ@3.3V) Timed Sleep: 1.27 µA Untimed Sleep Mode : 390 nA SNAP Engine RF220 Series Data Sheet — 116-061507-008-G003 General Networking Frequency ISM 2.4 GHz Spreading Method Direct Sequence (DSSS) Modulation O-QPSK Dimensions 33.86mm x 33.86mm Operating Temperature - 40 to 85 deg C. Antenna Options U.FL and on-board compact F antenna Weight 3 grams Topology SNAP Error Handling Retries and acknowledgment Number of Channels 15 channels. To avoid exceeding FCC limits, channel 15 operates in a receive only state. 2 Ports UARTS with optional HW Available I/O Flow Control Agency Approvals Note: The SNAP boot loader uses UART 1 and will transmit data there on power-up. Consuming these pins for another purpose will prevent node recovery in the case of a lost encryption key or similar situation. For more information, consult the SNAP Reference Manual. GPIO 20 total; 7 can be analog-in with 10bit ADC FCC Part 15.247 FCC ID: U9O-SM220 Industry Canada (IC) 7084A-SM220 3 RF220UF1 Module Pin Definitions For pin locations, consult the RF220UF1 Mechanical drawing later in this document. Table 1.2: RF220UF1 Pin Assignments RF220UF1 Pin Pin Name 1 GND 2 GPIO0 3 SNAPpy IO ATmega128RFA1 Pin Name Pin Description GND Power Supply 7 PB7_OC0A_OC1C_PCINT7 IO or PWM or Interrupt GPIO1 6 PB6_OC1B_PCINT6 IO or PWM or Interrupt 4 GPIO2 5 PB5_OC1A_PCINT5 IO or PWM or Interrupt 5 GPIO3 16 PE0_RXD0_PDI_PCINT8 IO or UART0 Rx or Interrupt 6 GPIO4 17 PE1_TXD0 IO or UART0 Tx 7 GPIO5 20 PE4_CTS0_OC3B_INT4 8 GPIO6 21 PE5_RTS0_OC3C_INT5 9 GPIO7 10 PD2_RXD1_INT2 10 GPIO8 11 PD3_TXD_INT3 11 GPIO9 12 PD4_CTS1_ICP1 IO or UART0 CTS Output or PWM or Interrupt IO or UART0 RTS Input or PWM or Interrupt IO or UART1 Rx or Interrupt IO or UART1 Data Out or Interrupt IO or UART1 CTS output or Input Capture IO or UART1 RTS input or 12 GPIO10 23 PE7_RTS1_ICP3_INT7_CLK0 Clock Output Buffer or Interrupt 13 GPIO11 24 PF0_ADC0 14 GPIO12 25 PF1_ADC1 IO or Analog0 IO or Analog1 or software SPI MOSI IO or Analog2 or software 15 GPIO13 26 PF2_ADC2_DIG2 SPI CLK1 or Antenna Diversity Control IO or software SPI1 MISO 16 GPIO14 18 PE2_XCK0_AIN0 or Analog Comparator or External Clock 17 4 GPIO15 28 PF4_ADC4_TCK IO or Analog4 or JTAG Test Clock SNAP Engine RF220 Series Data Sheet — 116-061507-008-G003 RF220UF1 Pin 18 Pin Name GPIO16 SNAPpy IO 29 ATmega128RFA1 Pin Name Pin Description IO or Analog5 or JTAG Test PF5_ADC5_TMS Mode Select IO or Analog6 or JTAG Test 19 GPIO17 30 Data Out or software I 2C PF6_ADC6_TDO SDA 20 GPIO18 21 VCC 31 IO or Analog7 or JTAG Test PF7_ADC7_TDI Data In or software I 2C SCL VCC Power Supply IO or Analog Comparator or 22 GPIO19 19 PE3_OC3A_AIN1 PWM or Output Compare Match 23 RESET# RESET# Module Reset, Active Low 24 GND GND Power Supply Electrical Characteristics Unless otherwise specified in this document, all electrical characteristics conform to the Atmel ATmega 128RFA1 microcontroller. Detailed specifications on all electrical characteristics are available on the Atmel website at http://www.atmel.com/ Table 1.3: RF220UF1 DC Characteristics at 25° C Symbol 1 VCC Parameter Condition Min Supply Voltage 2.0 Typ 3.3 Max 3.6 Units V Table 1.4: ADC Electrical Characteristics (Operating) Symbol 2 Parameter VREFH ADC Voltage Reference, High VINDC Analog input voltage Condition Min Typical Programmable 1.5 Single Ended 0 1.8 0 3.3 Differential 3 1.6 Max 1.8 Unit V V 1 Absolute maximum stress rated voltage for VCC is -0.3 to 3.6. It is recommended that bulk capacitance be located as close as possible to the VCC pin on the host board. Ideally, use a single 47µF capacitor rated at 10V directly at the VCC pin. 2 VREFH is programmable to three fixed values; 1.5V, 1.6V, and 1.8V. The VREFH value will be 1.6 volts if you do not explicitly adjust it by poking the ATmega128RFA1 registers. 3 Each differential analog input may be as high as 3.3V but the single-ended voltage is still limited to the voltage reference. 5 Mechanical Drawings RF220UF1 Mechanical Drawing on page 6 and Block diagram showing the major subsystems comprising RF220UF1 on page 7 are for modules with the compact F antenna and U.FL Connector options. NOTE: For best performance, the module should be mounted on the outside edge of the circuit board with the antenna side as close to the edge of the board as possible. Figure 1.1: RF220UF1 Mechanical Drawing NOTE: The area under the module's antenna (marked KEEP OUT AREA) should have no components, no traces, and no copper on any layer of the printed circuit board. 6 SNAP Engine RF220 Series Data Sheet — 116-061507-008-G003 Figure 1.2: Block diagram showing the major subsystems comprising RF220UF1 Selecting an Antenna The RF220UF1 uses the on-board compact F antenna by default. If you wish to use an external U.FL antenna with your application, you will need to set bit 0x0010 of NV ID 64 to 1 and reboot your node. This is a one-time change that will persist through reboots and program changes. To revert to the on-board antenna, change bit 0x0010 of NV ID 64 back to 0 and reboot the node. Antenna Gain Performance NOTE: Antenna gain performance information is based on information from the individual companies at the time this document's release. For added assurance, it's best to obtain antenna performance information directly from that antenna's manufacturer. 7 HyperLink Technologies HG2405RD-RSP Figure 1.3: HyperLink Technologies HG2405RD-RSP Antenna Gain Performance Pulse W1027 Figure 1.4: Pulse W1027 Antenna Gain Performance 8 SNAP Engine RF220 Series Data Sheet — 116-061507-008-G003 Board Mounting Considerations Processing Table 1.5: Recommended Reflow Profile Parameter Value Ramp up rate (from Tsoakmax to Tpeak) 3º/sec max Minimum Soak Temperature 150ºC Maximum Soak Temperature 200ºC Soak Time 60-120 sec TLiquidus 217ºC Time above TL 30-60 sec (recommended: 40 sec) Tpeak 230º - 250ºC (recommended: 235ºC) Time within 5º of Tpeak 20-30 sec Time from 25º to Tpeak 8 min max Ramp down rate 6ºC/sec max Figure 1.5: Reflow Profile Graph Additional Grounding Attempts to improve module or system grounding by soldering braids, wires, or cables onto the module RF shield cover is done at the customer's own risk. The numerous ground pins at the module perimeter should be sufficient for optimum immunity to external RF interference. 9 Agency Certifications United States (FCC) The RF220 complies with Part 15 of the FCC rules and regulations. Compliance with the labeling requirements, FCC notices, and antenna usage guidelines is required. In order to comply with FCC Certification requirements, the Original Equipment Manufacturer (OEM) must fulfill the following requirements. 1. The system integrator must place an exterior label on the outside of the final product housing the RF220 Modules. FCC Label on page 10 below shows the contents that must be included on this label. 2. RF220 Modules may only be used with the antenna that has been tested and approved for use with the module. Please refer to the antenna table provided in this section. OEM Labeling Requirements NOTICE: The OEM must make sure that FCC labeling requirements are met. This includes a clearly visible exterior label on the outside of the final product housing that displays the contents shown in FCC Label on page 10 below. MANUFACTURERSNAME BRANDNAME or TRADENAME Contains SM220 FCC ID: U9O-SM220 This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interferences, and (2) this device must accept any interference received, including interference that may cause undesired operation. Figure 1.6: FCC Label FCC Notices WARNING: The RF220 modules have been tested by the FCC for use with other products without further certification (as per FCC Section 2.1091). Changes or modifications to this device not expressly approved by Synapse Wireless Inc. could void the user’s authority to operate the equipment. NOTICE: OEM’s must certify final end product to comply with unintentional radiators (FCC Sections 15.107 and 15.109) before declaring compliance of their final product to Part 15 of the FCC Rules. NOTICE: The RF220 modules have been certified for remote and base radio applications. If the module will be used for portable applications as defined by the FCC, the device must undergo SAR testing. 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. This equipment generates, uses, and can radiate radio frequency energy, and if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. 10 SNAP Engine RF220 Series Data Sheet — 116-061507-008-G003 If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: • Reorient or relocate the receiving antenna. • Increase the separation between the equipment and receiver. • Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. • Consult the dealer or an experienced radio/TV technician for help. FCC Approved Antennas The RF220UF1 modules are FCC-approved for fixed base station and mobile applications. Notice:  To reduce potential radio interference to other users, the antenna type and its gain should be chosen so that the equivalent isotropically radiated power (EIRP) is not more than that permitted for successful communication. This module has been designed to operate with the antennas listed in RF220UF1 Approved FCC Antenna on page 11 and RF220UF1 Approved FCC Antennas on page 11 below. The required antenna impedance is 50 ohms. Table 1.6: RF220UF1 Approved FCC Antenna Part Number Compact F Antenna Type PC Board Trace Antenna Gain Impedance 0.0 dBi 50Ω Application Fixed/Mobile Min. Separation 20 cm. Table 1.7: RF220UF1 Approved FCC Antennas Part Number Pulse W1027 Type Dipole (quarterwave RPSMA) HyperLink HG2405RD- Dipole (quarterRSP wave RPSMA) Gain Impedance Application Min. Separation 3.2 dBi 50Ω Fixed/Mobile 20 cm. 5.5 dBi 50Ω Fixed/Mobile 20 cm. For more information on approved antennas, please consult the manufacturer’s website. WARNING: RF Exposure: This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20 cm between the radiator and your body. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. NOTICE: The preceding statement must be included as a CAUTION statement in OEM product manuals in order to alert users of FCC RF exposure compliance. 11 NOTE: Antenna and transmitters may be co-located or operated in conjunction with this device only if the transmitters do not simultaneously transmit. Otherwise, additional regulatory requirements will apply. Canada (IC) This device complies with Industry Canada license-exempt RSS standard(s). Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device. Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence. L'exploitation est autorisée aux deux conditions suivantes : (1) l'appareil ne doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement. Under Industry Canada regulations, this radio transmitter may only operate using an antenna of a type and maximum (or lesser) gain approved for the transmitter by Industry Canada. To reduce potential radio interference to other users, the antenna type and its gain should be so chosen that the equivalent isotropically radiated power (EIRP) is not more than that necessary for successful communication. Conformément à la réglementation d'Industrie Canada, le présent émetteur radio peut fonctionner avec une antenne d'un type et d'un gain maximal (ou inférieur) approuvé pour l'émetteur par Industrie Canada. Dans le but de réduire les risques de brouillage radioélectrique à l'intention des autres utilisateurs, il faut choisir le type d'antenne et son gain de sorte que la puissance isotrope rayonnée équivalente (p.i.r.e.) ne dépasse pas l'intensité nécessaire à l'établissement d'une communication satisfaisante. This radio transmitter: RF220UF1, IC: 7084A-SM220 has been approved by Industry Canada to operate with the antenna types listed below with the maximum permissible gain and required antenna impedance for each antenna type indicated. Antenna types not included in this list, having a gain greater than the maximum gain indicated for that type, are strictly prohibited for use with this device. Le présent émetteur radio: RF220UF1, IC : 7084A-SM220 a été approuvé par Industrie Canada pour fonctionner avec les types d'antenne énumérés ci-dessous et ayant un gain admissible maximal et l'impédance requise pour chaque type d'antenne. Les types d'antenne non inclus dans cette liste, ou dont le gain est supérieur au gain maximal indiqué, sont strictement interdits pour l'exploitation de l'émetteur. Table 1.8: RF220UF1 Approved IC Antenna Part Number Compact F Antenna Type Gain PC Board Trace Antenna 0.0 dBi Application Fixed/Mobile Min. Separation 20 cm. Table 1.9: RF220UF1 Approved IC Antennas Part Number Type Gain Pulse W1027 Dipole (quarter-wave RPSMA) HyperLink HG2405RD-RSP Dipole (quarter-wave RPSMA) 12 Application Min. Separation 3.2 dBi Fixed/Mobile 20 cm. 5.5 dBi Fixed/Mobile 20 cm. SNAP Engine RF220 Series Data Sheet — 116-061507-008-G003 IC OEM Labeling Requirements Labeling requirements for Industry Canada are similar to those of the FCC. A clearly visible label on the outside of the final product housing must display the contents shown in IC Label on page 13 below. MANUFACTURERSNAME BRANDNAME or TRADENAME MODEL: Contains SM220 IC: 7084A-SM220 Figure 1.7: IC Label NOTE: The OEM can choose to implement a single label combined for both FCC and IC labeling requirements. If a combined single label is chosen, there must be a clearly visible label on the outside of the final product housing displaying the contents shown in Combined FCC and IC Label on page 13 below. MANUFACTURERSNAME BRANDNAME or TRADENAME Contains SM220 FCC ID: U9O-SM220 Contains SM220 IC: 7084A-SM220 This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interferences, and (2) this device must accept any interference received, including interference that may cause undesired operation. Figure 1.8: Combined FCC and IC Label ESD Warnings NOTE: The RF220UF1 modules are ESD sensitive devices. During your manufacturing or assembly process, it is critical to have good ESD controls in place when handling the device or connecting an external antenna to the u.FL connector. During field installation process, Synapse recommends the following practices when connecting an antenna or cable to the RP-SMA bulkhead: NEEDED MATERIALS · 50 OHM Terminator plug RP-SMA: Part Number 132360RP from Amphenol ATTACHING THE TERMINATOR TO THE BULKHEAD Make sure the power is off. Attach the 50 OHM Terminator to the RP-SMA bulkhead hand tight. Keep the 50 OHM Terminator on the bulkhead at all times, until the antenna replaces the 50 OHM Terminator. When installing the device, the technician must be grounded with a proper ground strap. ATTACHING THE ANTENNA When it is time to attach the antenna, touch a grounded surface, remove the 50 OHM Terminator and screw on the antenna tightly. Tighten a 1/4 turn with a pair of needle nose pliers. Do not overtighten or the RF pin in the bulkhead will crack, creating poor RF link quality. 13