ERIC-SIGFOX

eRIC Sigfox AT Datasheet Antenna 24 GPIO 1 23 Operating System 3.3V Regulator 8 Product image for illustration purposes only Microcontroller NonVolatile Flash Application 9 10 11 19 18 General Purpose I/O RF Transceiver Serial Data In 4 Gnd 7 20 Temp Sensor BPF Serial Data Out 3 Vcc 6 21 eRIC Sigfox RF GPIO 2 GPIO 5 22 17 16 15 14 13 12 Block Diagram Features Ultra Narrow band modulation Serial Data Input and Output Pin compatible with all eRIC series RF modules uFL RF connector for remote antennas Built in on-chip temperature sensor Supply voltage measurements Operating temperature range -40°C to 85°C Applications Up-link and down-link for Sigfox networks Where required range is above 1km or transceiver is in poor RF location Suburban security alarms - void buildings, caravan or car storage sites, warehouses Rural security, farm buildings/equipment, livestock monitoring, remote irrigation pumps Data collection and monitoring over a wide physical area Receiver Carrier frequency 869.525 MHz Data-rate up to 600 bps Sensitivity -126 dBm @ 600bps, GFSK Line of Sight (LoS) range - 1km – 3km plus Transmitter High efficiency Power Amplifier Carrier frequency 868.13 MHz Data-rate 100 bps PSK RF Power output: up to +14dBm Power level programmable in 1dBm steps from 0dBm to +14dBm Power Consumption Power Supply range 2.5V – 5.0V Ultra-low power consumption: Standby mode current: 0.5 mA Sleep mode current: 1.3 μA Deep sleep mode current: 100 nA Continuous radio Rx mode: 10 mA Continuous radio Tx mode: 49 mA @ 14 dBm Charge required to send a Sigfox packet at 14 dBm output power: 0.28C General Purpose Input/Output (GPIO) 4 x GPIO pins with selectable voltage measure functionality 2 x GPIO pins with selectable Sigma Delta DAC output functionality 2 x GPIO pins with selectable output clock 3 x GPIO pins selectable as SPI master interface The eRIC Sigfox® AT RF transceiver module provides an ultra-low power module solution for nodes connected to the Sigfox network. The module is a complete sub-system that combines a high performance low power RF transceiver, a microcontroller and a voltage regulator. The form factor and pin out is compatible with other LPRS eRIC family modules allowing a drop-in replacement to upgrade or change the radio technology of host devices. The module is delivered ready for use and contains the necessary firmware to transmit and receive data from the Sigfox network in Europe and the UK. It connects to the customer host product via a logic level RS232 UART operating at 9600 bps. AT commands are used to configure the radio parameters and send up-link and down-link frames to the network. The module uses Ultra-Narrow Band (UNB) RF modulation to achieve excellent range and provide rugged and reliable connections to SigFox® base stations and networks. Key operating parameters can be changed and configured by sending simple ‘text’ (ASCII character) AT modem commands to the module via the on-board UART. Pin Description eRIC_Sigfox_Datasheet_1.2 Page 1 of 11 eRIC Sigfox AT Datasheet Pad No 1 Description SIGFOX Function PCO/SEL GPIO4 2 3 4 5 6 CPU Activity Indicator UART Tx UART Rx Radio Activity Indicator Power Input 7 8 9 10 11 12 13 Gnd JTAG Reset Transmit Activity Indicator No Connection Receive Activity Indicator GPIO0 14 15 16 17 18 19 20 21 22 23 24 PB0/TX1 PB4/TXO PB5/RXO PB1/RX1 Type Notes I/0/PU GPIO, selectable DAC functionality, selectable clock functionality LED drive via external current limit resistor Serial Data Out to host Serial Data In from host LED drive via external current limit resistor Positive power supply pin. +2.5 to +5.5 Volts. This should be a ‘clean’ noise free supply with less than 25mV of ripple Power Gnd 0 V Reserved use - Do Not Connect Internal Pull-up LED drive via external current limit resistor O O I/PU O P DBG_En RST_N DBG_CLK P N I/PU O DBG/DATA PA0/ADC0 O I/0/A/PU GPIO1 GPIO2 GPIO3 GPIO8 GPIO7 GPIO6 No Connection GPIO5 GPIO9 RF Ground PA1/ADC1 PA2 PA5 PC4 PC3/MISO PC2/MOSI I/0/A/PU I/0/A/PU I/0/A/PU I/0/PU I/0/PU I/0/PU Antenna Antenna PC1/SCK PB3 Key: A I O PU NC LED drive via external current limit resistor GPIO, selectable ADC functionality, selectable DAC functionality, selectable clock functionality GPIO, selectable ADC functionality GPIO, selectable ADC functionality GPIO, selectable ADC functionality GPIO GPIO, SPI MISO GPIO, SPI MOSI NC GPIO, SPI SCK GPIO, Wakeup from Deep sleep RF Gnd. Connect to antenna ground (coaxial cable screen braid) and local ground plane. Internally connected to other Ground pins. 50Ω RF input/output. Connect to suitable antenna. I/0/PU P A Analog signal Digital input signal Digital output signal Pull-up Pin GPIO0 GPIO1, 2, 3 GPIO4 GPIO5, 6, 7, 8, 9 Pin is configured as: O Output driver I No Connect Z High impedance input I/O N P PD Digital input/output signal Not to be connected Power or ground Pull-down Possible GPIO modes 0,1,Z,U,A,T 0,1,Z,U,A 0,1,Z,U,T 0,1,Z,U U A T Input with pull-up Analogue input Driven by Clock or DAC Notes The module operates internally from an on-board 3.3 Volt low dropout voltage regulator. The logic levels of the GPIO input/output pins are therefore between 0 Volt and 3.3 Volts. Digital outputs will drive external logic operating at 3.3 Volts. Digital inputs are 5V tolerant with the exception of GPIO3 which must NOT be driven above the VDD_IO voltage. All digital inputs are Schmitt trigger inputs, digital input and output levels are LVCMOS/LVTTL compatible. All GPIO pins start up as input with pull-up. For explanations on how to use the GPIO pins, see the AT Commands. eRIC_Sigfox_Datasheet_1.2 Page 2 of 11 eRIC Sigfox AT Datasheet eRIC-Sigfox AT uses the UART (pins UARTTX, UARTRX) to communicate with a host and uses a bit rate of 9600 baud, no parity, 8 data bits and 1 stop bit only. The UARTRX pin starts up as input with pull-up. The UART serial inputs and outputs are intended for connection to a microcontroller UART or other similar low voltage logic device. Do not connect any of the inputs or outputs directly to an RS232 port. The transceiver module may be permanently damaged by the voltages (+/-12V) present on RS232 signal lines. Mechanical Figure 2 Mechanical Drawing PCB Layout Notes Pitch of the castellated connection pads is 2.54mm. Pads 4 & 16 and 10 & 22 are on the centre line (C/L) of module. It is recommended that the module is mounted on a double sided PCB and that the area below the module be flooded with additional copper ground plane. This should be connected to Pad 23 (RF Ground) and Pad 7 (Power Gnd). The recommended pad layout is shown below. Pads should be solid with no hole. eRIC_Sigfox_Datasheet_1.2 Page 3 of 11 eRIC Sigfox AT Datasheet eRIC modules are designed for reflow soldering. Please contact LPRS Technical Department for further details and the suggested thermal profiles. Absolute Maximum Ratings Operating Temperature Range Storage Temperature Range Vcc All Other Pins (N.B.) Pin Input Current Pin Output current Total Supply Current Total Power Consumption Antenna Pin Electrostatic handling -40° C to +85° C -40° C to +85° C - 0.3 to + 5.5 Volts - 0.3 to +5.5 Volts 10mA 40mA 200mA 800mW +10dBm Should be protected to prevent damage from ESD +/- 2000V Human Body Model Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those listed in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Performance Data: Supply +5.0 Volt ± 5%, Temperature 20° C DC Parameters Operational ambient temperature I/O and voltage regulator supply voltage I/O voltage ramp for reset activation I/O voltage ramp for reset activation Pin Min Typ -40 27 3.3 0.1 3.3 Deep sleep mode current Sleep mode current 100 1.3 Standby mode current 0.5 Current consumption continuous RX Charge to send a Sigfox out of band message, 0dBm Charge to send a bit, 0dBm Charge to send a bit with downlink receive, 0dBm Charge to send the longest possible Sigfox frame (12 byte) , 0dBm Charge to send the longest possible Sigfox frame (12 byte) with downlink receive, 0dBm 10 0.12 0.08 0.27 eRIC_Sigfox_Datasheet_1.2 Max Units 85 Notes °C V TBA V/ms Ramp starts at VDD_IO≤0.1V V/ms Ramp starts at 0.1V