SARA-R4/N4 series System Integration Manual System Integration Manual SARA-R4/N4 Abstract This document describes the features and the integration of the size-optimized SARA-R4/N4 series cellular modules. These modules are a complete, cost efficient, performance optimized, multi-mode and multi band LTE Cat M1 / NB1 and EGPRS solution in the compact SARA form factor. www.u-blox.
SARA-R4/N4 series - System Integration Manual Document Information Title SARA-R4/N4 series Subtitle System Integration Manual Document type System Integration Manual Document number UBX-16029218 Revision and date R11 20-Feb-2019 Disclosure Restriction Product status Corresponding content status Functional Sample Draft For functional testing. Revised and supplementary data will be published later. In Development / Objective Specification Target values.
SARA-R4/N4 series - System Integration Manual Contents Document Information ............................................................................................................................ 2 Contents...................................................................................................................................................... 3 1 System description ............................................................................................................................
SARA-R4/N4 series - System Integration Manual 1.13.1 Network indication .......................................................................................................................................................... 45 1.13.2 Antenna supervisor.......................................................................................................................................................... 45 1.13.3 Dual stack IPv4/IPv6........................................................................
SARA-R4/N4 series - System Integration Manual 2.8.2 2.9 Guidelines for general purpose input/output layout design ................................................................... 112 Reserved pins (RSVD) ............................................................................................................................................................ 113 2.10 Module placement .......................................................................................................................
SARA-R4/N4 series - System Integration Manual 4.2.3 4.3 5 Modifications ................................................................................................................................................................... 131 Innovation, Science, Economic Development Canada notice ............................................................................ 132 4.3.1 Declaration of Conformity ..................................................................................................
SARA-R4/N4 series - System Integration Manual 1 System description 1.1 Overview The SARA-R4/N4 series comprises LTE Cat M1, LTE Cat NB1 and EGPRS multi-mode modules in the miniature SARA LGA form-factor (26.0 x 16.0 mm, 96-pin), that allow easy integration in compact designs and a seamless drop-in migration from u-blox cellular module families.
SARA-R4/N4 series - System Integration Manual SARA-R412M-02B Multi Region 13 SARA-N410-02B M1 * NB1 Multi Region 13 NB1 ● * ● ● ○ ● ● ○ ○ ● ● ● ● ● ● ● ● ● ● ● ● ○ ● ● ○ ○ ● ● ● ● ● ● ● ● ● ● * = LTE Cat M1/NB1 Bands may include 1, 2, 3, 4, 5, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28 (and band 39 in M1-only) ● = supported by all FW versions ○ = supported by future FW versions Table 1: SARA-R4/N4 series main features summary SARA-R4/N4 series modules include the fo
SARA-R4/N4 series - System Integration Manual Item SARA-R404M SARA-R410M SARA-R412M SARA-N410 LTE FDD bands Band 13 (750 MHz) Band 12 (700 MHz) Band 12 (700 MHz) Band 12 (700 MHz) Band 17 (700 MHz) 1, 2, 3 Band 13 (750 MHz) Band 28 (700 MHz) Band 28 (700 MHz) 1 Band 20 (800 MHz) Band 13 (750 MHz) Band 13 (750 MHz) 1 Band 5 (850 MHz) Band 20 (800 MHz) Band 20 (800 MHz) 1 Band 8 (900 MHz) Band 5 (850 MHz) Band 26 (850 MHz) 1, 2 Band 4 (1700 MHz) Band 8 (900 MHz) Band 18 (850 MHz)
SARA-R4/N4 series - System Integration Manual Item SARA-R404M SARA-R410M SARA-R412M SARA-N410 Data rate LTE category M1: LTE category M1: LTE category M1: LTE category NB1: up to 375 kb/s UL up to 375 kb/s UL up to 375 kb/s UL up to 62.5 kb/s UL up to 300 kb/s DL up to 300 kb/s DL up to 300 kb/s DL up to 27.2 kb/s DL LTE category NB15: LTE category NB1: up to 62.5 kb/s UL up to 62.5 kb/s UL up to 27.2 kb/s DL up to 27.2 kb/s DL GPRS multi-slot class 336: Up to 85.
SARA-R4/N4 series - System Integration Manual 1.2 Architecture Figure 1 summarizes the internal architecture of SARA-R4/N4 series modules. PA Filt er SIM ANT Swit ch RF t ransceiver SIM card det ect ion UART USB Cellular BaseBand Processor M emory 19.2 M Hz DDC (I2 C) SDIO SPI / Digit al Audio VCC (Supply) GPIOs V_INT Reset Ant enna det ect ion Power M anagement Power-On Figure 1: SARA-R4/N4 series modules simplified block diagram ☞ SARA-R404M-00B and SARA-R410M-01B modules, i.e.
SARA-R4/N4 series - System Integration Manual 1.3 Pin-out Table 3 lists the pin-out of the SARA-R4/N4 series modules, with pins grouped by function. Function Pin Name Pin No I/O Description Remarks Power VCC 51, 52, 53 I Module supply VCC supply circuit affects the RF performance and compliance input of the device integrating the module with applicable required certification schemes. See section 1.5.1 for functional description / requirements. See section 2.2.1 for external circuit design-in.
SARA-R4/N4 series - System Integration Manual Function Pin Name Pin No I/O Description Remarks SIM_IO 39 I/O SIM data Data input/output for 1.8 V / 3 V SIM Internal 4.7 k pull-up to VSIM. See section 1.8 for functional description. See section 2.5 for external circuit design-in. SIM_CLK 38 O SIM clock 4.8 MHz clock output for 1.8 V / 3 V SIM See section 1.8 for functional description. See section 2.5 for external circuit design-in. SIM_RST 40 O SIM reset Reset output for 1.
SARA-R4/N4 series - System Integration Manual Function Pin Name Pin No I/O Description Remarks USB VUSB_DET 17 I USB detect input VBUS (5 V typical) USB supply generated by the host must be connected to this input pin to enable the USB interface. Test-Point for diagnostic / FW update strongly recommended. See section 1.9.2 for functional description. See section 2.6.2 for external circuit design-in.
SARA-R4/N4 series - System Integration Manual Function Pin Name Pin No I/O Description Remarks SDIO SDIO_D0 47 I/O SDIO serial data [0] Not supported by “00”, “01” and “x2” product versions. See section 1.9.4 for functional description. See section 2.6.4 for external circuit design-in. SDIO_D1 49 I/O SDIO serial data [1] Not supported by “00”, “01” and “x2” product versions. See section 1.9.4 for functional description. See section 2.6.4 for external circuit design-in.
SARA-R4/N4 series - System Integration Manual Function Pin Name Pin No I/O Description Remarks I2S_WA / 34 I/O I2S word alignment I2S word alignment, alternatively configurable as SPI_MOSI SPI Master Output Slave Input Not supported by “00”, “01” and “x2” product versions. See section 1.10 for functional description. See section 2.7 for external circuit design-in. GPIO GPIO1 16 I/O GPIO 1.8 V GPIO with alternatively configurable functions. See section 1.11 for functional description.
SARA-R4/N4 series - System Integration Manual 1.4 Operating modes SARA-R4/N4 series modules have several operating modes. The operating modes are defined in Table 4 and described in detail in Table 5, providing general guidelines for operation. General Status Operating Mode Power-down Not-Powered Mode VCC supply not present or below operating range: module is switched off. Power-Off Mode Normal Operation Deep-Sleep Mode Definition VCC supply within operating range and module is switched off.
SARA-R4/N4 series - System Integration Manual Mode Description Transition between operating modes Deep-Sleep Only the internal 32 kHz reference is active.
SARA-R4/N4 series - System Integration Manual Mode Description Transition between operating modes Active Module is switched on with application The modules enter active mode from power-off mode when the interfaces enabled or not suspended: the host processor implements a clean switch-on procedure by using module is ready to communicate with an the PWR_ON pin (see 1.6.1).
SARA-R4/N4 series - System Integration Manual Figure 2 describes the transition between the different operating modes.
SARA-R4/N4 series - System Integration Manual 1.5 Supply interfaces 1.5.1 Module supply input (VCC) The modules must be supplied via the three VCC pins that represent the module power supply input. Voltage must be stable, because during operation, the current drawn by the SARA-R4/N4 series modules through the VCC pins can vary by several orders of magnitude, depending on the operating mode and state (as described in sections 1.5.1.2, 1.5.1.3, 1.5.1.4 and 1.5.1.6).
SARA-R4/N4 series - System Integration Manual 1.5.1.1 VCC supply requirements Table 6 summarizes the requirements for the VCC modules supply. See section 2.2.1 for suggestions to correctly design a VCC supply circuit compliant with the requirements listed in Table 6. ⚠ The supply circuit affects the RF compliance of the device integrating SARA-R4/N4 series modules with applicable required certification schemes as well as antenna circuit design.
SARA-R4/N4 series - System Integration Manual Table 6: Summary of VCC modules supply requirements UBX-16029218 - R11 System description Page 23 of 157
SARA-R4/N4 series - System Integration Manual 1.5.1.2 VCC current consumption in LTE connected mode During an LTE connection, the SARA-R4/N4 series modules transmit and receive in half duplex mode. The current consumption depends on output RF power, which is always regulated by the network (the current base station) sending power control commands to the module. These power control commands are logically divided into a slot of 0.
SARA-R4/N4 series - System Integration Manual slot/burst) with a periodicity of 4.615 ms (width of 1 frame = 8 slots/burst), that is, with a 1/8 duty cycle according to GSM TDMA (Time Division Multiple Access). If the module is transmitting in 2G single-slot mode in the 1800 or 1900 MHz bands, the current consumption figures are much lower than during transmission in the low bands, due to the 3GPP transmitter output power specifications.
SARA-R4/N4 series - System Integration Manual current consumption. But according to GPRS specifications, the maximum transmitted RF power is reduced if more than one slot is used to transmit, so the maximum peak of current is not as high as it can be in the case of a GSM call. If the module transmits in GPRS multi-slot class 12, in 850 or 900 MHz bands, at maximum RF power level, the consumption can reach a quite a high peak but lower than the one achievable in 2G single-slot mode. This happens for 2.
SARA-R4/N4 series - System Integration Manual 1.5.1.5 VCC current consumption in low power idle mode (low power enabled) The low power idle mode configuration is by default disabled, but it can be enabled using the AT+UPSV command (see the SARA-R4/N4 series AT Commands Manual [2]).
SARA-R4/N4 series - System Integration Manual 1.5.1.6 VCC current consumption in active mode (PSM / low power disabled) The active mode is the state where the module is switched on and ready to communicate with an external device by means of the application interfaces (as the USB or the UART serial interface). The module processor core is active, and the 19.2 MHz reference clock frequency is used.
SARA-R4/N4 series - System Integration Manual The typical operating voltage is 1.8 V, whereas the current capability is specified in the SARA-R4/N4 series Data Sheet [1]. The V_INT voltage domain can be used in place of an external discrete regulator as a reference voltage rail for external components.
SARA-R4/N4 series - System Integration Manual 1.6 System function interfaces 1.6.1 Module power-on When the SARA-R4/N4 series modules are in the not-powered mode (i.e. the VCC module supply is not applied), they can be switched on as follows: Rising edge on the VCC input pins to a valid voltage level, and then a low logic level needs to be set at the PWR_ON input pin for a valid time. When the SARA-R4/N4 series modules are in the power-off mode (i.e.
SARA-R4/N4 series - System Integration Manual ☞ Before the switch-on of the generic digital interface supply (V_INT) of the module, no voltage driven by an external application should be applied to any generic digital interface of the module. ☞ Before the SARA-R4/N4 series module is fully ready to operate, the host application processor should not send any AT command over AT communication interfaces (USB, UART) of the module.
SARA-R4/N4 series - System Integration Manual ⚠ Forcing a low level on the RESET_N input during SARA-R4/N4 series modules normal operations may lead to an unrecoverable faulty state! Figure 10 and Figure 11 describe the SARA-R4/N4 series modules switch-off sequence started by means of the AT+CPWROFF command and by means of the PWR_ON input pin respectively, allowing storage of current parameter settings in the module’s non-volatile memory and a clean network detach, with the following phases: When the
SARA-R4/N4 series - System Integration Manual ☞ The Internal Reset signal is not available on a module pin, but it is highly recommended to monitor the V_INT pin to sense the end of the switch-off sequence.
SARA-R4/N4 series - System Integration Manual SARA-R4/ N4 Power M anagement Unit 1.
SARA-R4/N4 series - System Integration Manual 1.7 Antenna interface 1.7.1 Antenna RF interface (ANT) SARA-R4/N4 series modules provide an RF interface for connecting the external antenna. The ANT pin represents the primary RF input/output for transmission and reception of LTE RF signals. The ANT pin has a nominal characteristic impedance of 50 and must be connected to the primary Tx / Rx antenna through a 50 transmission line to allow clear RF transmission and reception. 1.7.1.
SARA-R4/N4 series - System Integration Manual Item Requirements Remarks Maximum Gain According to radiation exposure The power gain of an antenna is the radiation efficiency multiplied by limits the directivity: the gain describes how much power is transmitted in the direction of peak radiation to that of an isotropic source. The maximum gain of the antenna connected to ANT port must not exceed the herein stated value to comply with regulatory agencies radiation exposure limits.
SARA-R4/N4 series - System Integration Manual The SIM driver supports the PPS (Protocol and Parameter Selection) procedure for baud-rate selection, according to the values determined by the SIM card or chip. 1.8.2 SIM detection interface The GPIO5 pin is configured as an external interrupt to detect the SIM card mechanical / physical presence.
SARA-R4/N4 series - System Integration Manual 1.9 Data communication interfaces SARA-R4/N4 series modules provide the following serial communication interface: USB interface: Universal Serial Bus 2.0 compliant interface available for the communication with a host application processor (AT commands, data, FW update by means of the FOAT feature), for FW update by means of the u-blox dedicated tool and for diagnostics. See section 1.9.2.
SARA-R4/N4 series - System Integration Manual SARA-R4/N4 series modules are designed to operate as cellular modems, i.e. as the data circuitterminating equipment (DCE) according to the ITU-T V.24 Recommendation [5]. A host application processor connected to the module UART interface represents the data terminal equipment (DTE). ☞ UART signal names of the cellular modules conform to the ITU-T V.24 Recommendation [5]: e.g.
SARA-R4/N4 series - System Integration Manual The configuration and the behavior of the UART signals after the boot sequence are described below: The module data output line (RXD) is set by default to the OFF state (high level) at UART initialization. The module holds RXD in the OFF state until the module transmits some data. The module data input line (TXD) is assumed to be controlled by the external host once UART is initialized and if UART is used in the application.
SARA-R4/N4 series - System Integration Manual The module itself acts as a USB device and can be connected to a USB host such as a Personal Computer or an embedded application microprocessor equipped with compatible drivers. The USB_D+/USB_D- lines carry USB serial bus data and signaling according to the Universal Serial Bus Revision 2.0 specification [4], while the VUSB_DET input pin senses the VBUS USB supply presence (nominally 5 V at the source) to detect the host connection and enable the interface.
SARA-R4/N4 series - System Integration Manual 1.9.3 ☞ SPI interface The SPI interface is not supported by “00”, “01”, “02” and “52” product versions: the SPI interface pins should not be driven by any external device. SARA-R4/N4 series modules include a Serial Peripheral Interface for communication with compatible external device.
SARA-R4/N4 series - System Integration Manual SARA-R4/N4 series modules support VoLTE (Voice over LTE Cat M1 radio bearer) for providing audio services. SARA-R4/N4 series modules include an I2S digital audio interface to transfer digital audio data to/from an external compatible audio device. The digital audio interface can be made available as alternative function, in mutually exclusive way, over the SPI interface pins (I2S_WA / SPI_MOSI, I2S_RXD / SPI_MISO, I2S_CLK / SPI_CLK, I2S_TXD / SPI_CS).
SARA-R4/N4 series - System Integration Manual 1.11 General Purpose Input/Output SARA-R4/N4 series modules include six pins (GPIO1-GPIO6) which can be configured as General Purpose Input/Output or to provide custom functions via u-blox AT commands (for more details see the SARAR4/N4 series AT Commands Manual [2], +UGPIOC, +UGPIOR, +UGPIOW AT commands), as summarized in Table 8.
SARA-R4/N4 series - System Integration Manual 1.13 System features 1.13.1 Network indication GPIOs can be configured by the AT command to indicate network status (for further details see section 1.11 and the SARA-R4/N4 series AT Commands Manual [2]): No service (no network coverage or not registered) Registered / Data call enabled (RF data transmission / reception) 1.13.
SARA-R4/N4 series - System Integration Manual FTP files can also be transferred using FTP Direct Link: FTP download: data coming from the FTP server is forwarded to the host processor via USB / UART serial interfaces (for FTP without Direct Link mode the data is always stored in the module’s flash file system) FTP upload: data coming from the host processor via USB / UART serial interface is forwarded to the FTP server (for FTP without Direct Link mode the data is read from the module’s flash file sy
SARA-R4/N4 series - System Integration Manual 1.13.9 Power saving 1.13.9.1 Guidelines to optimize power consumption The LTE Cat M1 / NB1 technology is mainly intended for applications that only require a small amount of data exchange per day (i.e. a few bytes in uplink and downlink per day). Depending on the application type, the battery may be required to last for a few years.
SARA-R4/N4 series - System Integration Manual For the definition and the description of the SARA-R4/N4 series operating modes, including the events forcing transitions between the different operating modes, see section 1.4. The SARA-R4/N4 series modules achieve the low power deep sleep mode by powering down all the Hardware components with the exception of the 32 kHz reference internally generated.
SARA-R4/N4 series - System Integration Manual Current Connected mode: Data Tx / Rx PSM low power deep sleep mode Active mode (periodic update timer) (active timer) Time Figure 14: Description of the PSM timing 1.13.9.
SARA-R4/N4 series - System Integration Manual 1.13.9.7 Normal operation The Host Application can force the SARA-R4/N4 series module to transition from PSM low power deep sleep mode to Active mode by using the Power-Up procedure specified in section 1.6.1.
SARA-R4/N4 series - System Integration Manual 2 Design-in 2.1 Overview For an optimal integration of the SARA-R4/N4 series modules in the final application board, follow the design guidelines stated in this section. Every application circuit must be suitably designed to guarantee the correct functionality of the relative interface, but a number of points require particular attention during the design of the application device.
SARA-R4/N4 series - System Integration Manual 7. Other supplies: V_INT generic digital interfaces supply. Accurate design is required to guarantee correct functionality. Follow the suggestions provided in the corresponding section 2.2.2 for the schematic and layout design. ☞ It is recommended to follow the specific design guidelines provided by each manufacturer of any external part selected for the application board integrating the u-blox cellular modules.
SARA-R4/N4 series - System Integration Manual 2.2 Supply interfaces 2.2.1 Module supply (VCC) 2.2.1.1 General guidelines for VCC supply circuit selection and design All the available VCC pins have to be connected to the external supply minimizing the power loss due to series resistance. GND pins are internally connected.
SARA-R4/N4 series - System Integration Manual side, linear regulators are not recommended for high voltage step-down as they dissipate a considerable amount of energy in thermal power. See section 2.2.1.3 for design-in. If SARA-R4/N4 series modules are deployed in a mobile unit where no permanent primary supply source is available, then a battery will be required to provide VCC. A standard 3-cell Li-Ion or Li-Pol battery pack directly connected to VCC is the usual choice for battery-powered devices.
SARA-R4/N4 series - System Integration Manual Power capability: the switching regulator with its output circuit must be capable of providing a voltage value to the VCC pins within the specified operating range and must be capable of delivering to VCC pins the maximum current consumption occurring during transmissions at the maximum power, as specified in the SARA-R4/N4 series Data Sheet [1].
SARA-R4/N4 series - System Integration Manual C5 10 nF Capacitor Ceramic X7R 0402 10% 16 V Generic manufacturer C6 470 nF Capacitor Ceramic X7R 0603 10% 25 V Generic manufacturer C7 100 µF Capacitor Tantalum B_SIZE 20% 6.
SARA-R4/N4 series - System Integration Manual C2 10 nF Capacitor Ceramic X7R 16 V Generic manufacturer C3 22 nF Capacitor Ceramic X7R 16 V Generic manufacturer C4 22 µF Capacitor Ceramic X5R 25 V Generic manufacturer C5 22 µF Capacitor Ceramic X5R 25 V Generic manufacturer C6 100 nF Capacitor Ceramic X7R 16 V GRM155R71C104KA01 - Murata C7 10 nF Capacitor Ceramic X7R 16 V GRM155R71C103KA01 - Murata C8 68 pF Capacitor Ceramic C0G 0402 5% 50 V GRM1555C1E680JA01 - Murata C9 15 pF Capacito
SARA-R4/N4 series - System Integration Manual Figure 18 and the components listed in Table 11 show an example of a low cost power supply circuit suitable for all the SARA-R4/N4 series modules, where the module VCC is supplied by a step-down switching regulator capable of delivering the highest peak / pulse current specified for the 2G use-case, transforming a 12 V supply input.
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SARA-R4/N4 series - System Integration Manual 2.2.1.3 Guidelines for VCC supply circuit design using low drop-out linear regulator The use of a linear regulator is suggested when the difference from the available supply rail source and the VCC value is low. The linear regulators provide high efficiency when transforming a 5 VDC supply to a voltage value within the module VCC normal operating range.
SARA-R4/N4 series - System Integration Manual C4 10 nF Capacitor Ceramic X7R 16 V GRM155R71C103KA01 - Murata C5 68 pF Capacitor Ceramic C0G 0402 5% 50 V GRM1555C1E680JA01 - Murata C6 15 pF Capacitor Ceramic C0G 0402 5% 50 V GRM1555C1E150JA01 - Murata R1 9.1 k Resistor 0402 5% 0.1 W Generic manufacturer R2 3.9 k Resistor 0402 5% 0.1 W Generic manufacturer U1 LDO Linear Regulator ADJ 3.
SARA-R4/N4 series - System Integration Manual U1 LDO Linear Regulator 1.0 A AP7361 – Diodes Incorporated Table 13: Components for high reliability VCC supply circuit for SARA-R404M /-R410M /-N410, using an LDO linear regulator ☞ See the section 2.2.1.10, and in particular Figure 27 / Table 19, for the parts recommended to be provided if the application device integrates an internal antenna.
SARA-R4/N4 series - System Integration Manual ☞ See the section 2.2.1.10, and in particular Figure 27 / Table 19, for the parts recommended to be provided if the application device integrates an internal antenna.
SARA-R4/N4 series - System Integration Manual 2.2.1.
SARA-R4/N4 series - System Integration Manual Constant voltage: when the battery voltage reaches the regulated output voltage, the Battery Charger IC starts to reduce the current until the charge termination is done. The charging process ends when the charging current reaches the value configured by an external resistor or when the charging timer reaches the factory set value.
SARA-R4/N4 series - System Integration Manual 2.2.1.7 Guidelines for external charging and power path management circuit Application devices where both a permanent primary supply / charging source (e.g. ~12 V) and a rechargeable back-up battery (e.g. 3.
SARA-R4/N4 series - System Integration Manual The MP2617H IC normally provides a supply voltage to the module regulated from the external main primary source allowing immediate system operation even under missing or deeply discharged battery: the integrated switching step-down regulator is capable to provide up to 3 A output current with low output ripple and fixed 1.6 MHz switching frequency in PWM mode operation.
SARA-R4/N4 series - System Integration Manual Li-Ion/Li-Polym er Bat t ery Charger / Regulat or wit h Power Pat h M anagm ent BST 12V C4 SARA-R4/ N4 L1 Prim ary Source VIN SW D3 R4 VLIM + SYSFB R6 R5 C5 Li-Ion/Li-Pol Bat t ery Pack R7 R1 R2 ENn BAT ILIM NTC ISET VCC C10 C11 C12 C13 θ R3 TM R C3 C1 51 VCC 52 VCC 53 VCC SYS C2 AGND PGND C6 C7 C8 D1 D2 GND B1 U1 Figure 24: Li-Ion (or Li-Polymer) battery charging and power path management application circuit Reference Descript
SARA-R4/N4 series - System Integration Manual 2.2.1.
SARA-R4/N4 series - System Integration Manual ☞ See the section 2.2.1.10, and in particular Figure 27 / Table 19, for the parts recommended to be provided if the application device integrates an internal antenna.
SARA-R4/N4 series - System Integration Manual 2.2.1.9 Guidelines for removing VCC supply Removing the VCC power can be useful to minimize the current consumption when the SARA-R4/N4 series modules are switched off or when the modules are in deep sleep Power Saving Mode.
SARA-R4/N4 series - System Integration Manual ☞ It is highly recommended to avoid an abrupt removal of the VCC supply during SARA-R4/N4 series normal operations: the VCC supply can be removed only after V_INT goes low, indicating that the module has entered Deep-Sleep Power Saving Mode or Power-Off Mode. ☞ See the section 2.2.1.10, and in particular Figure 27 / Table 19, for the parts recommended to be provided if the application device integrates an internal antenna. 2.2.1.
SARA-R4/N4 series - System Integration Manual SARA-R4/ N4 3V8 VCC 51 VCC 52 VCC 53 C5 Capacit or wit h SRF ~900 M Hz Ferrit e Bead f or GHz noise FB1 Capacit or wit h SRF ~1900 M Hz GND plane SARA + C1 C2 C3 C4 C1 C2 C3 C4 FB1 C5 VCC line GND Figure 27: Suggested design to reduce ripple / noise on VCC, highly recommended when using an integrated antenna Reference Description Part Number - Manufacturer C1 68 pF Capacitor Ceramic C0G 0402 5% 50 V GRM1555C1H680JA01 - Murata C2 15 pF Capac
SARA-R4/N4 series - System Integration Manual VCC connection must be routed as far as possible from the antenna, in particular if embedded in the application device: see Figure 28 Coupling between VCC and digital lines, especially USB, must be avoided. The tank bypass capacitor with low ESR for current spikes smoothing described in section 2.2.1.10 should be placed close to the VCC pins.
SARA-R4/N4 series - System Integration Manual It is recommended to implement one layer of the application board as ground plane as wide as possible If the application board is a multilayer PCB, then all the board layers should be filled with GND plane as much as possible and each GND area should be connected together with complete via stack down to the main ground layer of the board.
SARA-R4/N4 series - System Integration Manual 2.3 System functions interfaces 2.3.1 Module power-on (PWR_ON) 2.3.1.1 Guidelines for PWR_ON circuit design SARA-R4/N4 series PWR_ON input is equipped with an internal active pull-up resistor; an external pull-up resistor is not required and should not be provided. If connecting the PWR_ON input to a push button, the pin will be externally accessible on the application device.
SARA-R4/N4 series - System Integration Manual 2.3.1.2 Guidelines for PWR_ON layout design The power-on circuit (PWR_ON) requires careful layout since it is the sensitive input available to switch on and switch off the SARA-R4/N4 series modules. It is required to ensure that the voltage level is well defined during operation and no transient noise is coupled on this line, otherwise the module might detect a spurious power-on request.
SARA-R4/N4 series - System Integration Manual 2.3.2 Module reset (RESET_N) 2.3.2.1 Guidelines for RESET_N circuit design SARA-R4/N4 series RESET_N is equipped with an internal pull-up; an external pull-up resistor is not required. If connecting the RESET_N input to a push button, the pin will be externally accessible on the application device. According to EMC/ESD requirements of the application, an additional ESD protection device (e.g.
SARA-R4/N4 series - System Integration Manual 2.4 Antenna interface SARA-R4/N4 series modules provide an RF interface for connecting the external antenna: the ANT pin represents the RF input/output for RF signals transmission and reception. The ANT pin has a nominal characteristic impedance of 50 and must be connected to the physical antenna through a 50 transmission line to allow clean transmission / reception of RF signals. 2.4.1 Antenna RF interface (ANT) 2.4.1.
SARA-R4/N4 series - System Integration Manual o It is recommended to select a custom antenna designed by an antennas’ manufacturer if the required ground plane dimensions are very small (e.g. less than 6.5 cm long and 4 cm wide).
SARA-R4/N4 series - System Integration Manual GND clearance on t op layer around ANT pad GND clearance on buried layer very close t o t op layer below ANT pad M in. 250 µm ANT M in.
SARA-R4/N4 series - System Integration Manual 40 0 µm 120 0 µm 40 0 µm L1 Copper 35 µm FR-4 dielect ric 1510 µm L2 Copper 35 µm Figure 33: Example of 50 coplanar waveguide transmission line design for the described 2-layer board layup If the two examples do not match the application PCB stack-up, then the 50 characteristic impedance calculation can be made using the HFSS commercial finite element method solver for electromagnetic structures from Ansys Corporation, or using freeware tools like Av
SARA-R4/N4 series - System Integration Manual Ensure solid metal connection of the adjacent metal layer on the PCB stack-up to main ground layer, providing enough vias on the adjacent metal layer, as described in Figure 34, Route RF transmission lines far from any noise source (as switching supplies and digital lines) and from any sensitive circuit (as USB), Avoid stubs on the transmission lines, Avoid signal routing in parallel to transmission lines or crossing the transmission lines on buri
SARA-R4/N4 series - System Integration Manual However, real antennas do not have a perfect 50 load on all the supported frequency bands. So to reduce as much as possible any performance degradation due to antenna mismatching, the RF termination must provide optimal return loss (or VSWR) figures over all the operating frequencies, as summarized in Table 7.
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SARA-R4/N4 series - System Integration Manual Examples of antennas Table 22 lists some examples of possible internal on-board surface-mount antennas. Manufacturer Part Number Product Name Description Taoglas PA.710.A Warrior GSM / WCDMA / LTE SMD Antenna 698..960 MHz, 1710..2170 MHz, 2300..2400 MHz, 2490..2690 MHz 40.0 x 6.0 x 5.0 mm Taoglas PCS.06.A Havok GSM / WCDMA / LTE SMD Antenna 698..960 MHz, 1710..2170 MHz, 2500..2690 MHz 42.0 x 10.0 x 3.0 mm Taoglas MCS6.
SARA-R4/N4 series - System Integration Manual Table 23 lists some examples of possible internal off-board PCB-type antennas with cable and connector. Manufacturer Part Number Taoglas FXUB63.07.0150C Product Name Description GSM / WCDMA / LTE PCB Antenna with cable and U.FL 698..960 MHz, 1575.42 MHz, 1710..2170 MHz, 2400..2690 MHz 96.0 x 21.0 mm Taoglas FXUB66.07.0150C Maximus GSM / WCDMA / LTE PCB Antenna with cable and U.FL 698..960 MHz, 1390..1435 MHz, 1575.42 MHz, 1710..2170 MHz, 2400..
SARA-R4/N4 series - System Integration Manual Manufacturer Part Number Product Name Description 86 x Ø 199 mm Laird Tech. OC69271-FNM GSM / WCDMA / LTE pole-mount antenna with N-type(M) 698..960 MHz, 1710..2690 MHz 248 x Ø 24.5 mm Pulse WA700/2700SMA GSM / WCDMA / LTE clip-mount MIMO antenna with cables and SMA(M) Electronics 698..960 MHz,1710..2700 MHz 149 x 127 x 5.1 mm Table 24: Examples of external antennas 2.4.2 Antenna detection interface (ANT_DET) 2.4.2.
SARA-R4/N4 series - System Integration Manual R2 15 k Resistor for Diagnostics Various Manufacturers Table 25: Suggested parts for antenna detection circuit on application PCB and diagnostic circuit on antennas assembly The antenna detection circuit and diagnostic circuit suggested in Figure 35 and Table 25 are here explained: When antenna detection is forced by the +UANTR AT command, the ANT_DET pin generates a DC current measuring the resistance (R2) from the antenna connector (J1) provided on th
SARA-R4/N4 series - System Integration Manual Reported values close to the used diagnostic resistor nominal value (i.e. values from 13 k to 17 k if a 15 k diagnostic resistor is used) indicate that the antenna is correctly connected. Values close to the measurement range maximum limit (approximately 50 k) or an open-circuit “over range” report (see the SARA-R4/N4 series AT Commands Manual [2]) means that that the antenna is not connected or the RF cable is broken.
SARA-R4/N4 series - System Integration Manual 2.4.2.2 Guidelines for ANT_DET layout design Figure 36 describes the recommended layout for the antenna detection circuit to be provided on the application board to achieve antenna detection functionality, implementing the recommended schematic described in the previous Figure 35 and Table 25: The ANT pin must be connected to the antenna connector by means of a 50 transmission line, implementing the design guidelines described in section 2.4.
SARA-R4/N4 series - System Integration Manual 2.5 SIM interface 2.5.1 Guidelines for SIM circuit design 2.5.1.
SARA-R4/N4 series - System Integration Manual A solderable SIM chip has 8 contacts and can also include the auxiliary contacts C4 and C8 for other uses, but only 6 contacts are required and must be connected to the module SIM card interface as described above. Solderable SIM chips are suitable for M2M applications where it is not required to change the SIM once installed. 2.5.1.
SARA-R4/N4 series - System Integration Manual SIM CARD HOLDER SARA-R4/ N4 VPP (C6) VSIM 41 VCC (C1) SIM _IO 39 C C C C 5 6 7 8 IO (C7) SIM _CLK 38 CLK (C3) SIM _RST 40 RST (C2) GND (C5) C1 C2 C3 C4 C5 C C C C 1 2 3 4 SIM Card Bot t om View (cont act s side) D1 D2 D3 D4 J1 Figure 37: Application circuits for the connection to a single removable SIM card, with SIM detection not implemented Reference Description Part Number - Manufacturer C1, C2, C3, C4 47 pF Capacitor Ceramic C0G 0402 5%
SARA-R4/N4 series - System Integration Manual 2.5.1.3 Guidelines for single SIM chip connection A solderable SIM chip (M2M UICC Form Factor) must be connected the SIM card interface of the SARAR4/N4 series modules as described in Figure 38. Follow these guidelines to connect the module to a solderable SIM chip without SIM presence detection: Connect the UICC / SIM contacts C1 (VCC) to the VSIM pin of the module. Connect the UICC / SIM contact C7 (I/O) to the SIM_IO pin of the module.
SARA-R4/N4 series - System Integration Manual Follow these guidelines connecting the module to a SIM connector implementing SIM presence detection: Connect the UICC / SIM contacts C1 (VCC) to the VSIM pin of the module. Connect the UICC / SIM contact C7 (I/O) to the SIM_IO pin of the module. Connect the UICC / SIM contact C3 (CLK) to the SIM_CLK pin of the module. Connect the UICC / SIM contact C2 (RST) to the SIM_RST pin of the module. Connect the UICC / SIM contact C5 (GND) to ground.
SARA-R4/N4 series - System Integration Manual C5 100 nF Capacitor Ceramic X7R 0402 10% 16 V GRM155R71C104KA01 - Murata D1 – D6 Very Low Capacitance ESD Protection PESD0402-140 - Tyco Electronics R1 1 k Resistor 0402 5% 0.1 W RC0402JR-071KL - Yageo Phycomp R2 470 k Resistor 0402 5% 0.
SARA-R4/N4 series - System Integration Manual 2.6 Data communication interfaces 2.6.1 UART interface 2.6.1.1 Guidelines for UART circuit design Providing the full RS-232 functionality (using the complete V.24 link)12 If RS-232 compatible signal levels are needed, two different external voltage translators can be used to provide full RS-232 (9 lines) functionality: e.g. using the Texas Instruments SN74AVC8T245PW for the translation from 1.8 V to 3.3 V, and the Maxim MAX3237E for the translation from 3.
SARA-R4/N4 series - System Integration Manual Reference Description Part Number - Manufacturer C1, C2, C3, C4 100 nF Capacitor Ceramic X7R 0402 10% 16 V GRM155R61A104KA01 - Murata U1, U2 Unidirectional Voltage Translator SN74AVC4T77413 - Texas Instruments Table 29: Component for UART application circuit with complete V.24 link in DTE/DCE serial communication (3.
SARA-R4/N4 series - System Integration Manual Applicat ion Processor (3.0 V DTE) SARA-R4/ N4 (1.
SARA-R4/N4 series - System Integration Manual Applicat ion Processor (1.8V DTE) SARA-R4/ N4 (1.8V DCE) TxD RxD RTS CTS 0Ω TP 0Ω TP 0Ω TP 0Ω TP 12 TXD 13 RXD 10 RTS 11 CTS DTR 9 DTR DSR 6 DSR RI 7 RI DCD 8 DCD GND GND Figure 44: UART interface application circuit with partial V.24 link (5-wire) in the DTE/DCE serial communication (1.8V DTE) If a 3.0 V Application Processor (DTE) is used, then it is recommended to connect the 1.
SARA-R4/N4 series - System Integration Manual Providing the TXD and RXD lines only 18 If the functionality of the CTS, RTS, DSR, DCD, RI and DTR lines is not required in the application, or the lines are not available, then: Connect the module RTS input line to GND or to the CTS output line of the module, since the module requires RTS active (low electrical level) if HW flow-control is enabled (AT&K3, which is the default setting) Connect the module DTR input line to GND using a 0 series resisto
SARA-R4/N4 series - System Integration Manual Applicat ion Processor (3.0 V DTE) Unidirect ional Volt age Translat or 3V0 VCC VCCA SARA-R4/ N4 (1.8V DCE) 1V8 TP VCCB C1 4 V_INT C2 DIR1 TxD A1 B1 RxD A2 B2 DIR2 U1 RTS 0Ω TP 0Ω TP 0Ω TP TXD RXD 10 RTS OE GND TP CTS 12 13 11 CTS DTR 9 DTR DSR 6 DSR RI 7 RI DCD 8 DCD GND GND Figure 47: UART interface application circuit with a partial V.24 link (3-wire) in DTE/DCE serial communication (3.
SARA-R4/N4 series - System Integration Manual Additional considerations If a 3.0 V Application Processor (DTE) is used, the voltage scaling from any 3.0 V output of the DTE to the corresponding 1.8 V input of the module (DCE) can be implemented as an alternative low-cost solution, by means of an appropriate voltage divider. Consider the value of the pull-down / pull-up integrated at the input of the module (DCE) for the correct selection of the voltage divider resistance values.
SARA-R4/N4 series - System Integration Manual 2.6.2 USB interface 2.6.2.1 Guidelines for USB circuit design The USB_D+ and USB_D- lines carry the USB serial data and signaling. The lines are used in single-ended mode for full speed signaling handshake, as well as in differential mode for high speed signaling and data transfer. USB pull-up or pull-down resistors and external series resistors on USB_D+ and USB_D- lines as required by the USB 2.
SARA-R4/N4 series - System Integration Manual ☞ If the USB interface is enabled, the module does not enter the low power deep sleep mode: the external USB VBUS supply voltage needs to be removed from the VUSB_DET input of the module to let it enter the Power Saving Mode defined in 3GPP Rel.13.
SARA-R4/N4 series - System Integration Manual 410 µm 740 µm 410 µm 740 µm 410 µm L1 Copper 35 µm FR-4 dielect ric 1510 µm L2 Copper 35 µm Figure 50: Example of USB line design, with Z0 close to 90 and ZCM close to 30 , for the described 2-layer board layup 2.6.3 SPI interface 2.6.3.1 Guidelines for SPI circuit design ☞ The SPI interface is not supported by “00”, “01”, “02” and “52” product versions: the SPI interface pins should not be driven by any external device. 2.6.4 SDIO interface 2.
SARA-R4/N4 series - System Integration Manual ☞ Capacitance and series resistance must be limited on the bus to match the I 2C specifications (1.0 µs is the maximum allowed rise time on the SCL and SDA lines): route connections as short as possible. ☞ ESD sensitivity rating of the DDC (I2C) pins is 1 kV (Human Body Model according to JESD22-A114). Higher protection level could be required if the lines are externally accessible and it can be achieved by mounting an ESD protection (e.g.
SARA-R4/N4 series - System Integration Manual Connection with u-blox 1.8 V GNSS receivers Figure 51 shows an application circuit for connecting the cellular module to a u-blox 1.8 V GNSS receiver: The SDA and SCL pins of the cellular module are directly connected to the related pins of the u-blox 1.8 V GNSS receiver. External pull-up resistors are not needed, as they are already integrated in the cellular module.
SARA-R4/N4 series - System Integration Manual the GNSS 3.0 V supply can be ramped up before the V_INT 1.8 V cellular supply). External pull-up resistors are not needed on the cellular module side, as they are already integrated in the cellular module. The GPIO2 is connected to the active-high enable pin of the voltage regulator that supplies the u-blox 3.0 V GNSS receiver providing the “GNSS supply enable” function.
SARA-R4/N4 series - System Integration Manual 2.6.5.2 Guidelines for DDC (I2C) layout design The DDC (I2C) serial interface requires the same consideration regarding electro-magnetic interference as any other digital interface. Keep the traces short and avoid coupling with RF line or sensitive analog inputs, since the signals can cause the radiation of some harmonics of the digital data frequency. 2.7 Audio 2.7.
SARA-R4/N4 series - System Integration Manual ☞ Use transistors with at least an integrated resistor in the base pin or otherwise put a 10 k resistor on the board in series to the GPIO of SARA-R4/N4 series modules. ☞ Do not apply voltage to any GPIO of the module before the switch-on of the GPIOs supply (V_INT), to avoid latch-up of circuits and allow a clean module boot. If the external signals connected to the module cannot be tri-stated or set low, insert a multi-channel digital switch (e.g.
SARA-R4/N4 series - System Integration Manual 2.9 Reserved pins (RSVD) SARA-R4/N4 series modules have pins reserved for future use, marked as RSVD. All the RSVD pins are to be left unconnected on the application board, except for the RSVD pin number 33 that can be externally connected to ground. 2.10 Module placement An optimized placement allows a minimum RF line’s length and closer path from DC source for VCC.
SARA-R4/N4 series - System Integration Manual 2.11 Module footprint and paste mask Figure 54 and Table 37 describe the suggested footprint (i.e. copper mask) and paste mask layout for SARA modules: the proposed land pattern layout reflects the modules’ pins layout, while the proposed stencil apertures layout is slightly different (see the F’’, H’’, I’’, J’’, O’’ parameters compared to the F’, H’, I’, J’, O’ ones).
SARA-R4/N4 series - System Integration Manual F’’ 1.00 mm J’’ 0.35 mm O’’ 1.05 mm Table 37: SARA-R4/N4 series modules suggested footprint and paste mask dimensions ☞ These are recommendations only and not specifications. The exact copper, solder and paste mask geometries, distances, stencil thicknesses and solder paste volumes must be adapted to the specific production processes (e.g. soldering etc.) of the customer. 2.
SARA-R4/N4 series - System Integration Manual Optimize antenna return loss, to optimize overall electrical performance of the module including a decrease of module thermal power. Optimize the thermal design of any high-power components included in the application, such as linear regulators and amplifiers, to optimize overall temperature distribution in the application. Select the material, the thickness and the surface of the box (i.e.
SARA-R4/N4 series - System Integration Manual SARA-R4/ N4 15pF 3V8 100uF 100nF 10nF 68pF 51 VCC 52 VCC 53 VCC 15pF ANT 39nH 10k 62 27pF Applicat ion Processor TP TP Open drain out put 15 18 PW R_ON SIM Card Holder TP 1k V_INT 4 GPIO5 42 SW 2 VSIM 41 SW 1 CCVCC (C1) SIM _IO 39 CCIO (C7) SIM _CLK 38 CCCLK (C3) SIM _RST 40 CCRST (C2) CCVPP (C6) RESET_N GND (C5) USB 2.
SARA-R4/N4 series - System Integration Manual 2.14 Design-in checklist This section provides a design-in checklist. 2.14.1 Schematic checklist The following are the most important points for a simple schematic check: DC supply must provide a nominal voltage at VCC pin within the operating range limits.
SARA-R4/N4 series - System Integration Manual Check 50 nominal characteristic impedance of the RF transmission line connected to the ANT port (antenna RF interface). Ensure no coupling occurs between the RF interface and noisy or sensitive signals (SIM signals, high-speed digital lines such as USB, and other data lines). Optimize placement for minimum length of RF line. Check the footprint and paste mask designed for SARA-R4/N4 series module as illustrated in section 2.11.
SARA-R4/N4 series - System Integration Manual 3 ☞ Handling and soldering No natural rubbers, no hygroscopic materials or materials containing asbestos are employed. 3.1 Packaging, shipping, storage and moisture preconditioning For information pertaining to SARA-R4/N4 series reels / tapes, Moisture Sensitivity levels (MSD), shipment and storage information, as well as drying for preconditioning, see the SARA-R4/N4 series Data Sheet [1] and the u-blox Package Information Guide [15]. 3.
SARA-R4/N4 series - System Integration Manual To prevent electrostatic discharge through the RF pin, do not touch any exposed antenna area. If there is any risk that such exposed antenna area is touched in a non-ESD protected work area, implement adequate ESD protection measures in the design. When soldering the module and patch antennas to the RF pin, make sure to use an ESD-safe soldering iron.
SARA-R4/N4 series - System Integration Manual 3.3 Soldering 3.3.1 Soldering paste "No Clean" soldering paste is strongly recommended for SARA-R4/N4 series modules, as it does not require cleaning after the soldering process has taken place. The paste listed in the example below meets these criteria. Soldering Paste: OM338 SAC405 / Nr.143714 (Cookson Electronics) Alloy specification: 95.5% Sn / 3.9% Ag / 0.6% Cu (95.5% Tin / 3.9% Silver / 0.6% Copper) 95.5% Sn / 4.0% Ag / 0.5% Cu (95.5% Tin / 4.
SARA-R4/N4 series - System Integration Manual Time: 60 – 120 s If the preheat is insufficient, rather large solder balls tend to be generated. Conversely, if performed excessively, fine balls and large balls will be generated in clusters. End Temperature: +150 - +200 °C If the temperature is too low, non-melting tends to be caused in areas containing large heat capacity. Heating/ reflow phase The temperature rises above the liquidus temperature of +217 °C.
SARA-R4/N4 series - System Integration Manual ☞ The modules must not be soldered with a damp heat process. 3.3.3 Optical inspection After soldering the module, inspect it optically to verify that it is correctly aligned and centered. 3.3.4 Cleaning Cleaning the modules is not recommended. Residues underneath the modules cannot be easily removed with a washing process. Cleaning with water will lead to capillary effects where water is absorbed in the gap between the baseboard and the module.
SARA-R4/N4 series - System Integration Manual ☞ u-blox gives no warranty against damages to the SARA-R4/N4 series modules caused by performing more than a total of two soldering processes (one reflow soldering process to mount the SARA-R4/N4 series module, plus one wave soldering process to mount other THT parts on the application board). 3.3.7 Hand soldering Hand soldering is not recommended. 3.3.8 Rework Rework is not recommended. ☞ Never attempt a rework on the module itself, e.g.
SARA-R4/N4 series - System Integration Manual 3.3.12 Use of ultrasonic processes The cellular modules contain components which are sensitive to ultrasonic waves. Use of any ultrasonic processes (cleaning, welding etc.) may cause damage to the module. ☞ u-blox gives no warranty against damages to the cellular modules caused by any ultrasonic processes.
SARA-R4/N4 series - System Integration Manual 4 Approvals 4.
SARA-R4/N4 series - System Integration Manual Verizon LTE Cat M1 Band LTE Cat M1 Bands 13 AT&T 4, 13 LTE Cat M1 Bands 2, 4, 5, 12 LTE Cat M1 Bands 2, 4, 5, 12 LTE Cat M1 Bands 2, 4, 5, 12 LTE Cat M1 Bands 2, 4, 5, 12 T-Mobile LTE Cat NB1 Bands 2, 4, 5, 12 Bell LTE Cat M1 Bands Telus LTE Cat M1 Bands 2, 4, 5, 12 2, 4, 5, 12 Telstra LTE Cat M1 Bands 2, 4, 5, 12 LTE Cat M1 Bands 3, 5, 8, 28 Table 38: Summary of certification approvals achieved for the SARA-R4/N4 series modules, with related RA
SARA-R4/N4 series - System Integration Manual TS 36.521-2 [12] and 3GPP TS 36.523-2 [13], is a statement of the implemented and supported capabilities and options of a device. ☞ The PICS document of the application device integrating SARA-R4/N4 series modules must be updated from the module PICS statement if any feature stated as supported by the module in its PICS document is not implemented or disabled in the application device.
SARA-R4/N4 series - System Integration Manual 4.2 US Federal Communications Commission notice United States Federal Communications Commission (FCC) IDs: u-blox SARA-R404M cellular modules: XPY2AGQN1NNN u-blox SARA-R410M and SARA-N410 cellular modules: XPY2AGQN4NNN u-blox SARA-R412M cellular modules: XPYUBX18ZO01 4.2.1 Safety warnings review the structure Equipment for building-in.
SARA-R4/N4 series - System Integration Manual 4.2.3 o 3.66 dBi in 700 MHz, i.e. LTE FDD-12 band o 3.94 dBi in 750 MHz, i.e. LTE FDD-13 band o 4.41 dBi in 850 MHz, i.e. LTE FDD-5 band o 6.75 dBi in 1700 MHz, i.e. LTE FDD-4 band o 7.00 dBi in 1900 MHz, i.e. LTE FDD-2 band SARA-R412M-02B modules: o 8.69 dBi in 700 MHz, i.e. LTE FDD-12 band o 9.15 dBi in 750 MHz, i.e. LTE FDD-13 band o 9.41 dBi in 850 MHz, i.e. GSM 850 / LTE FDD-5 band o 12.01 dBi in 1700 MHz, i.e. LTE FDD-4 band o 12.
SARA-R4/N4 series - System Integration Manual off and on, the user is encouraged to try to correct the interference by one or more of the following measures: o Reorient or relocate the receiving antenna o Increase the separation between the equipment and receiver o Connect the equipment into an outlet on a circuit different from that to which the receiver is connected o Consultant the dealer or an experienced radio/TV technician for help 4.
SARA-R4/N4 series - System Integration Manual 4.3.2 o 3.66 dBi in 700 MHz, i.e. LTE FDD-12 band o 3.94 dBi in 750 MHz, i.e. LTE FDD-13 band o 4.41 dBi in 850 MHz, i.e. LTE FDD-5 band o 6.75 dBi in 1700 MHz, i.e. LTE FDD-4 band o 7.00 dBi in 1900 MHz, i.e. LTE FDD-2 band SARA-R412M-02B modules: o 5.63 dBi in 700 MHz, i.e. LTE FDD-12 band o 5.94 dBi in 750 MHz, i.e. LTE FDD-13 band o 6.12 dBi in 850 MHz, i.e. GSM 850 / LTE FDD-5 band o 8.29 dBi in 1700 MHz, i.e. LTE FDD-4 band o 8.
SARA-R4/N4 series - System Integration Manual This device has been evaluated and shown compliant with the IC RF Exposure limits under mobile exposure conditions (antennas are greater than 20 cm from a person's body). This device has been certified for use in Canada. Status of the listing in the Industry Canada’s REL (Radio Equipment List) can be found at the following web address: http://www.ic.gc.ca/app/sitt/reltel/srch/nwRdSrch.
SARA-R4/N4 series - System Integration Manual ⚠ IMPORTANT: les fabricants d'applications portables contenant les modules de la SARA-R4/N4 series doivent faire certifier leur produit final et déposer directement leur candidature pour une certification FCC ainsi que pour un certificat ISDE Canada délivré par l'organisme chargé de ce type d'appareil portable. Ceci est obligatoire afin d'être en accord avec les exigences SAR pour les appareils portables.
SARA-R4/N4 series - System Integration Manual 4.4 European Conformance CE mark SARA-R410M-02B and SARA-R412M-02B module product versions have been evaluated against the essential requirements of the Radio Equipment Directive 2014/53/EU. In order to satisfy the essential requirements of the 2014/53/EU RED, the modules are compliant with the following standards: ⚠ Radio Spectrum Efficiency (Article 3.2): o EN 301 908-1 o EN 301 908-13 o EN 301 511 Electromagnetic Compatibility (Article 3.
SARA-R4/N4 series - System Integration Manual 4.
SARA-R4/N4 series - System Integration Manual 5 Product testing 5.1 u-blox in-series production test u-blox focuses on high quality for its products. All units produced are fully tested automatically on the production line. Stringent quality control processes have been implemented in the production line. Defective units are analyzed in detail to improve production quality. This is achieved with automatic test equipment (ATE) in the production line, which logs all production and measurement data.
SARA-R4/N4 series - System Integration Manual 5.2 Test parameters for OEM manufacturers Because of the testing done by u-blox (with 100% coverage), an OEM manufacturer does not need to repeat the firmware tests or measurements of the module RF performance or tests over analog and digital interfaces in their production test.
SARA-R4/N4 series - System Integration Manual 5.2.2 RF functional tests The overall RF functional test of the device including the antenna can be performed with basic instruments such as a spectrum analyzer (or an RF power meter) and a signal generator with the assistance of the AT+UTEST command over the AT command user interface. The AT+UTEST command provides a simple interface to set the module to Rx or Tx test modes ignoring the LTE signaling protocol.
SARA-R4/N4 series - System Integration Manual Applicat ion Processor SARA-R4/ N4 Cellular ant enna Wideband ant enna IN Spect rum Analyzer or Power M et er OUT Signal Generat or AT com m ands ANT TX Applicat ion Board Cellular ant enna Applicat ion Processor Wideband ant enna SARA-R4/ N4 AT com m ands ANT RX Applicat ion Board Figure 58: Setup with spectrum analyzer or power meter and signal generator for SARA-R4/N4 series RF measurements UBX-16029218 - R11 Product testing Page 141 of 15
SARA-R4/N4 series - System Integration Manual Appendix A Migration between SARA modules A.1 Overview SARA-G3 2G modules, SARA-U2 3G / 2G modules, SARA-R4/N4 LTE Cat M1/NB1 / 2G modules and SARAN2 LTE Cat NB1 modules have exactly the same u-blox SARA form factor (26.0 x 16.0 mm, LGA 96-pin), with compatible pin assignments, as in Figure 59.
SARA-R4/N4 series - System Integration Manual Table 39: Summary of SARA-G3, SARA-U2, SARA-R4/N4 and SARA-N2 modules interfaces SARA modules are also form-factor compatible with the u-blox LISA, LARA and TOBY cellular module families: although each has a different form factor, the footprints for the TOBY, LISA, SARA and LARA modules have been developed to ensure layout compatibility.
SARA-R4/N4 series - System Integration Manual A.2 Pin-out comparison Table 40 shows a pin-out comparison between the SARA-G3, SARA-U2, SARA-R4/N4, and SARA-N2 modules.
SARA-R4/N4 series - System Integration Manual No 10 SARA-G3 SARA-U2 SARA-R4 SARA-N2 Pin Name Description Pin Name Description Pin Name Description Pin Name Description Remarks for migration RTS UART RTS Input RTS UART RTS Input RTS UART RTS Input21 RTS UART RTS Input21 Diverse level (V_INT vs VCC); V_INT level (1.8 V) V_INT level (1.8 V) V_INT level (1.8 V) VCC level (3.6 V typ.
SARA-R4/N4 series - System Integration Manual No SARA-G3 Pin Name 16 SARA-U2 Description GPIO1 / RSVD GPIO (G340/G350) SARA-R4 SARA-N2 Pin Name Description Pin Name Description Pin Name Description Remarks for migration GPIO1 GPIO GPIO1 GPIO GPIO1 GPIO Diverse driver strength Reserved (G300/G310) V_INT level (1.8 V) V_INT level (1.8 V) V_INT level (1.8 V) TestPoint recommended for N2 V_INT level (1.
SARA-R4/N4 series - System Integration Manual No 24 SARA-G3 SARA-U2 SARA-R4 SARA-N2 Pin Name Description Pin Name Description Pin Name Description Pin Name Description Remarks for migration GPIO3 / GPIO (G340/G350) GPIO3 GPIO GPIO3 GPIO GPIO2 GPIO23 Diverse driver strength 32K_OUT 32 kHz Output (G300/G310) V_INT level (1.8 V) V_INT level (1.8 V) V_INT level (1.8 V) V_INT level (1.
SARA-R4/N4 series - System Integration Manual No SARA-G3 SARA-U2 SARA-R4 SARA-N2 Pin Name Description Pin Name Description Pin Name Description Pin Name Description 30 GND Ground GND Ground GND Ground GND Ground 31 RSVD / Reserved (G340/G350) RSVD Reserved RSVD Reserved RSVD Reserved EXT32K 32 kHz Input (G300/G310) 32 GND Ground GND Ground GND Ground GND Ground 33 RSVD It must be connected to GND RSVD It must be connected to GND RSVD It can be connected to GN
SARA-R4/N4 series - System Integration Manual No 42 SARA-G3 SARA-U2 SARA-R4 SARA-N2 Pin Name Description Pin Name Description Pin Name Description Pin Name Description Remarks for migration SIM_DET SIM Detection Input SIM_DET SIM Detection Input GPIO5 SIM Detection Input RSVD Reserved SIM Detection vs Reserved V_INT level (1.8 V) V_INT level (1.8 V) V_INT level (1.
SARA-R4/N4 series - System Integration Manual No SARA-G3 SARA-U2 SARA-R4 SARA-N2 Pin Name Description Pin Name Description Pin Name Description Pin Name Description Remarks for migration 56 ANT RF Antenna I/O ANT RF Antenna I/O ANT RF Antenna I/O ANT RF Antenna I/O Diverse bands supported 57-61 GND Ground GND Ground GND Ground GND Ground 62 ANT_DET / Antenna Detection Input / ANT_DET Antenna Detection Input ANT_DET Antenna Detection Input ANT_DET Antenna Detection I
SARA-R4/N4 series - System Integration Manual B Glossary Abbreviation Definition 2G 2nd Generation Cellular Technology (GSM, GPRS, EGPRS) 3G 3rd Generation Cellular Technology (UMTS, HSDPA, HSUPA) 3GPP 3rd Generation Partnership Project 8-PSK 8 Phase-Shift Keying modulation ADC Analog to Digital Converter AT AT Command Interpreter Software Subsystem, or attention Cat Category CE European Conformity DC Direct Current DCE Data Communication Equipment DDC Display Data Channel interface
SARA-R4/N4 series - System Integration Manual Abbreviation Definition GPS Global Positioning System HBM Human Body Model HTTP HyperText Transfer Protocol HW Hardware IFT Federal Telecommunications Institute Mexico I2C Inter-Integrated Circuit interface I2S Inter IC Sound interface ISED Innovation, Science and Economic Development Canada LDO Low-Dropout LGA Land Grid Array LNA Low Noise Amplifier LPWA Low Power Wide Area LTE Long Term Evolution LWM2M Open Mobile Alliance Lightwe
SARA-R4/N4 series - System Integration Manual Abbreviation Definition SPI Serial Peripheral Interface SRF Self-Resonant Frequency SSL Secure Socket Layer TBD To Be Defined TCP Transmission Control Protocol TDD Time Division Duplex TDMA Time Division Multiple Access TIS Total Isotropic Sensitivity TP Test-Point TRP Total Radiated Power UART Universal Asynchronous Receiver-Transmitter UDP User Datagram Protocol UICC Universal Integrated Circuit Card UL Up-Link (Transmission) UMT
SARA-R4/N4 series - System Integration Manual Related documents [1] u-blox SARA-R4/N4 series Data Sheet, document number UBX-16024152 [2] u-blox SARA-R4/N4 series AT Commands Manual, document number UBX-17003787 [3] u-blox EVK-R4/N4 User Guide, document number UBX-16029216 [4] Universal Serial Bus Revision 2.0 specification, http://www.usb.org/developers/docs/usb20_docs/ [5] ITU-T Recommendation V.
SARA-R4/N4 series - System Integration Manual Revision history Revision Date Name Comments R01 31-Jan-2017 sfal Initial release R02 05-May-2017 sfal / sses Updated supported features and characteristics Extended document applicability to SARA-R410M-01B product version R03 24-May-2017 sses Updated supported features and electrical characteristics R04 19-Jul-2017 sses Updated supported features and electrical characteristics Added FCC and ISED info for SARA-R410M-01B modules Extended docum
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