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Related Manuals for Neoway N11 Series
Summary of Contents for Neoway N11 Series
- Page 1 Hardware User Guide Issue 1.2 Date 2018-10-13 Neoway Product Document...
- Page 2 THIS GUIDE PROVIDES INSTRUCTIONS FOR CUSTOMERS TO DESIGN THEIR APPLICATIONS. PLEASE FOLLOW THE RULES AND PARAMETERS IN THIS GUIDE TO DESIGN AND COMMISSION. NEOWAY WILL NOT TAKE ANY RESPONSIBILITY OF BODILY HURT OR ASSET LOSS CAUSED BY IMPROPER OPERATIONS. THE INFORMATION IN THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE DUE TO PRODUCT VERSION UPDATE OR OTHER REASONS.
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Page 3: Table Of Contents
5.2 Transmitting Power and Receiving Sensitivity ................28 5.2.1 Transmitting Power ......................28 5.2.2 Receiving Sensitivity......................30 6 PCB Foot Print ..................31 7 Mounting N11 onto the Application Board ..........32 8 Package ....................33 9 Abbreviations ................... 34 Copyright © Neoway Technology Co., Ltd... - Page 4 Figure 3-19 RF layout reference ...................... 23 Figure 3-20 Encapsulation specifications of Murata RF connector ..........24 Figure 3-21 RF connections ......................24 Figure 6-1 PCB foot print recommended for N11 (unit: mm) ............31 Copyright © Neoway Technology Co., Ltd...
- Page 5 Table 4-3 Current feature ......................... 26 Table 4-4 ESD feature of the module ....................27 Table 5-1 Operating band ......................... 28 Table 5-2 Transmitting power (GSM800&EGSM900) ..............28 Table 5-3 Transmitting power (DCS1800&PCS1900) ..............29 Copyright © Neoway Technology Co., Ltd...
- Page 6 Hardware User Guide About This Document Scope This document is applicable to N11 series. It defines the features, indicators, and test standards of the N11 module and provides reference for the hardware design of each interface. Audience This document is intended for system engineers (SEs), development engineers, and test engineers.
- Page 7 Hardware User Guide Related Documents Neoway_N11_Datasheet Neoway_N11_Product_Specifications Neoway_N11_AT_Command_Mannual Neoway_N11_EVK_User_Guide Copyright © Neoway Technology Co., Ltd...
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Page 8: About N11
N11 series include two variants: N11 and N11 V2. These two variants are completely compatible with each other in pin definition, packaging, and electric feature. In this document, N11 refers to both variants if there is additional note. -
Page 9: Specifications
-40 º C to +85 º C Operating Voltage 3.3 V to 4.3 V (3.9 V is recommended) Peak Current Max 2.0 A Operating Current (Idle) 11 mA Current in Sleep Mode < 2.5 mA (on live network) Copyright © Neoway Technology Co., Ltd... - Page 10 Support server and client mode Support AT command sending, data transmission and firmware download UART Support baud rate from 9600 bit/s to 115200 bit/s Antenna Feature 50 Ω characteristic impedance Copyright © Neoway Technology Co., Ltd...
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Page 11: Pin Description
Hardware User Guide 2 Pin Description 2.1 Pin Allocation Figure 2-1 Top view of N11 module VBAT VBAT RING NET_LIGHT ON/OFF Top View SIM_DATA VDDIO_2P8 SIM_CLK DEBUG_TXD SIM_RESET DEBUG_RXD VSIM UART_TXD UART_RXD UART POWER ON/OFF OTHERS Copyright © Neoway Technology Co., Ltd... -
Page 12: Pin Definition
<3.1; command sending 0<V <0.42; UART data and receiving UART_RXD receive 2.38<V <2.8 SIM Card SIM_DATA DI/O SIM card data 0<V <0.25*VSIM; Compatible with 1.8/3.0 V SIM card 0.75*VSIM<V <VSIM; SIM_CLK SIM card clock Copyright © Neoway Technology Co., Ltd... - Page 13 In this situation, the IO pins of the module might be damaged if the IO signals are connected to the IO port on the 2.8 V systems. To rectify this issue, take measures to match the level. For details, see the 3.2 UART. Copyright © Neoway Technology Co., Ltd...
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Page 14: Application Interfaces
The peak input current at the VBAT pin can be up to 2 A when the signal is weak and the module works at the maximum transmitting power. The voltage might encounter a drop in such a situation. The module might restart if the voltage drops lower than 3.3 V. Copyright © Neoway Technology Co., Ltd... -
Page 15: Figure 3-1 Current Peaks And Voltage Drops
A controllable power supply is preferable if used in harsh conditions. The module might fail to reset in remote or unattended applications, or in an environment with great electromagnetic interference (EMI). Use the EN pin on the LDO or DC/DC chipset to control the switch of the power supply as Copyright © Neoway Technology Co., Ltd... -
Page 16: Figure 3-3 Reference Design Of Power Supply Control
Figure 3-4 Reference design of power supply controlled by p-MOSFET VCC_IN_3.9V VBAT C1 C2 10 μF 0.1 μF 100pF 33 pF 470 μF 100 k Ω 10 μF 0.1 μF GPRS_EN Ω 10 k Ω Copyright © Neoway Technology Co., Ltd... - Page 17 The inductor used in Reference Design (b), should be a power inductor and have a very low resistance. 10 μH with average current ability greater than 1.2 A and low DC resistance is recommended. Copyright © Neoway Technology Co., Ltd...
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Page 18: Power-On/Off Control And Procedure
Never use a diode to make the drop voltage between a higher input and module power. Otherwise, Neoway will not provide warranty for product issues caused by this. In this situation, the diode will obviously decrease the module performances, or result in unexpected restarts, due to the forward voltage of diode will vary greatly in different temperature and current. -
Page 19: Figure 3-6 Power-On Procedure
2 seconds later it will shut down. Another approach to turn off the module is using AT commands. For details, please refer to Neoway_N11_AT_Commands_Manual. Figure 3-7 Power-off procedure VBAT 500 ms ON/OFF UART Copyright © Neoway Technology Co., Ltd... -
Page 20: Figure 3-8 Reference Circuit For Power-On/Off Control
47 k Ω In Figure 3-9, high level takes effect for ON/OFF on the user side (USER_ON) after level shifting. R1 and R2 can be adjusted according to the driving capability of the USER_ON pin. Copyright © Neoway Technology Co., Ltd... -
Page 21: Uart
If the UART does not match the logic voltage of the MCU, add a level shifting circuit outside of the module as shown in Figure 3-11 (for V ≤200 mV) and Figure 3-12 (for V >200 mV). OL_MAX OL_MAX Copyright © Neoway Technology Co., Ltd... -
Page 22: Figure 3-11 Recommended Level Shifting Circuit 1
UART_RXD are respectively the TX and RX ports of the module. VCC_IO indicates the voltage at the UART of the MCU while VDDIO_2P8 indicates the voltage at the UART of the module. Figure 3-12 shows another recommended level shifting circuit. Copyright © Neoway Technology Co., Ltd... -
Page 23: Figure 3-12 Recommended Level Shifting Circuit 2
Ω Avoid data transmitted at UART when the module is powered on and send data to the UART 3 seconds after the module is powered on so that the module would not respond wrongly. Copyright © Neoway Technology Co., Ltd... -
Page 24: Dtr And Ring
Calling: Once a voice call is coming, UART outputs "RING" character strings and meanwhile the RING pin outputs 30 ms low pulses at 5s period. After the call is answered, the high level restores. Copyright © Neoway Technology Co., Ltd... -
Page 25: Sim Card
If the embedded SIM card is not used, design the SIM card circuit as described in the following. Table 3-4 SIM card interfaces Signal Function Description Remarks SIM_DATA DI/O SIM card data SIM_CLK SIM card clock Self-adaption to 1.8V/3.0V SIM_RESET SIM card reset VSIM SIM card power supply output Copyright © Neoway Technology Co., Ltd... -
Page 26: Figure 3-15 Reference Design Of Sim Card Interface
ESD diodes with 27 pF to 33 pF grounding capacitors. The ESD diodes or small capacitors should be close to SIM card. If 6-pin SIM card socket is used, MCP-C713(H2.8) is recommended. Figure 3-16 shows its encapsulation. Copyright © Neoway Technology Co., Ltd... -
Page 27: Light
The NET_LIGHT pin can output a 4 mA of current and 2.8 V of voltage, therefore the LED can be directly connected to this pin with a resistor in series. For better luminance, drive the LED with a transistor. Copyright © Neoway Technology Co., Ltd... -
Page 28: Rf Design And Pcb Layout
If the characteristic impedance is well matched, and VSWR requirement is met, just use a 100 pF capacitor for C1 and leave L1, L2 un- installed. Avoid any other traces crossing the antenna trace on neighboring layer. Copyright © Neoway Technology Co., Ltd... -
Page 29: Figure 3-18 Reference Design For Antenna Interface
0.5 pF, otherwise the RF signal will be attenuated. RCLAMP0521P from Semtech, or ESD5V3U1U from Infineon, can be used here. On the PCB, keep the RF signals and RF components away from high-speed circuits, power supplies, transformers, great inductors, the clock circuit of single-chip host, etc. Copyright © Neoway Technology Co., Ltd... -
Page 30: Recommended Rf Connection
RF cable can also be connected to the module by soldering. In this manner, ensure proper soldering in case of damage that lowers RF performance. Figure 3-21 shows the pictures of these two connections. Figure 3-21 RF connections Copyright © Neoway Technology Co., Ltd... -
Page 31: Electric Features And Reliability
Storage -45 ° C 90 ° C If the module works in temperature exceeding the thresholds, its RF performance (e.g. frequency deviation or phase deviation) might be worse but it can still work properly. Copyright © Neoway Technology Co., Ltd... -
Page 32: Current
The data in the above table is typical values obtained during tests in lab. It might be a little bit different in manufacturing. Also, the test results might be various due to different settings or testing methods. Copyright © Neoway Technology Co., Ltd... -
Page 33: Esd Protection
± 15 kV ± 8 kV ± 15 kV ± 8 kV ± 15 kV Cover ± 8 kV ± 15 kV UART_RXD/UART_TXD ± 4 kV ± 8 kV Others ± 4 kV ± 8 kV Copyright © Neoway Technology Co., Ltd... -
Page 34: Rf Features
27 dBm ± 3 dBm 25 dBm ± 3 dBm 23 dBm ± 3 dBm 21 dBm ± 3 dBm 19 dBm ± 3 dBm 17 dBm ± 3 dBm 15 dBm ± 3 dBm Copyright © Neoway Technology Co., Ltd... -
Page 35: Table 5-3 Transmitting Power (Dcs1800&Pcs1900)
12 dBm ± 3 dBm 10 dBm ± 4 dBm 8 dBm ± 4 dBm 6 dBm ± 4 dBm 4 dBm ± 4 dBm 2 dBm ± 5 dBm 0 dBm ± 5 dBm Copyright © Neoway Technology Co., Ltd... -
Page 36: Receiving Sensitivity
<-108 dBm DCS1800&PCS1900 <-108 dBm The data in the above tables is obtained by connecting the module to RF test instrument (e.g. CMU200, CWM500, or Agilent8960) in lab tests. It is for reference only. Copyright © Neoway Technology Co., Ltd... -
Page 37: Pcb Foot Print
6 PCB Foot Print LGA packaging is adopted to package the pins of the N11 module. Figure 6-1 shows the recommended PCB foot print. Figure 6-1 PCB foot print recommended for N11 (unit: mm) Copyright © Neoway Technology Co., Ltd... -
Page 38: Mounting N11 Onto The Application Board
Use a low-residue, no-clean type solder paste. For information about cautions in N11 storage and mounting, refer to Neoway Module Reflow Manufacturing Recommendations. When maintaining and manually desoldering it, use heat guns with great opening, adjust the temperature to 250 degrees (depending on the type of the solder paste), and heat the module till the solder paste is melt. -
Page 39: Package
SMT. Or, if the indication card shows humidity is greater than 20%, the baking procedure is also required. The baking should last for at least 12 hours at 90 ° C. Do not bake the modules with the package tray directly. Copyright © Neoway Technology Co., Ltd... -
Page 40: Abbreviations
Electro Magnetic Interference Electronic Static Discharge European Telecommunication Standard FDMA Frequency Division Multiple Access Full Rate GPRS General Packet Radio Service Global Standard for Mobile Communications Half Rate Integrated Circuit IMEI International Mobile Equipment Identity Copyright © Neoway Technology Co., Ltd... - Page 41 Read-only Memory Root Mean Square Real Time Clock Subscriber Identification Module Short Message Service SRAM Static Random Access Memory Terminal adapter TDMA Time Division Multiple Access UART Universal asynchronous receiver-transmitter VSWR Voltage Standing Wave Ratio Copyright © Neoway Technology Co., Ltd...
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