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Neoway S726 Hardware User's Manual

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Hardware User Guide
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Issue 1.2

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Summary of Contents for Neoway S726

  • Page 1 Hardware User Guide Smart Module Issue 1.2...
  • 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.

  • Page 3: Table Of Contents

    5.6 RF Interface ..........................70 5.6.1 ANT_MAIN/ANT_DRX Antenna Interface ................. 71 5.6.2 ANT_WIFI/BT Antenna Interface ..................72 5.6.3 ANT_GNSS Antenna Interface ..................72 5.6.4 Antenna Assembling ......................74 5.7 GPIO Interfaces ......................... 77 Copyright © Neoway Technology Co., Ltd. All rights reserved.
  • Page 4 9 Mounting ....................94 9.1 PCB Package ..........................94 9.2 Application Foot Print ......................... 95 9.3 Stencil ............................95 9.4 Solder Paste ..........................96 9.5 SMT Oven Temperature Profile ....................96 Abbreviations ..................98 Copyright © Neoway Technology Co., Ltd. All rights reserved.
  • Page 5 Figures Figures Figure 2-1 Block diagram ......................... 13 Figure 4-1 S726 pin definition (top view) ..................18 Figure 5-1 Power supply recommended design 1 ................33 Figure 5-2 Power supply recommended design 2 ................34 Figure 5-3 Power supply recommended design 3 ................34 Figure 5-4 Power supply recommended design 4 ................
  • Page 6 Figure 8-3 Tray package ........................91 Figure 8-4 Tray ..........................92 Figure 9-1 Bottom view of the S726 PCB package (unit: mm) ............94 Figure 9-2 Top view of the S726 package (unit: mm) ..............95 Figure 9-3 Oven temperature profile ....................96...
  • Page 7 Tables Tables Table 2-1 Variants and frequency bands ..................12 Table 2-2 Basic features of the S726 module .................. 14 Table 4-1 IO definition and DC characteristics ................. 19 Table 4-2 Pin description ........................20 Table 5-1 Charging interface pinouts ....................37 Table 5-2 Power output pinouts......................
  • Page 8 S726 Hardware User Guide Tables Table 7-1 S726 operating bands ...................... 85 Table 7-2 S726 TX power and RX sensitivity description ..............86 Table 7-3 S726 GNSS technical parameters ................... 86 Table 7-4 S726 WLAN/BT TX power and RX sensitivity ..............87 Copyright ©...

  • Page 9: About This Document

    About This Document Scope This document is applicable to the S726 series. It defines the features, indicators, and test standards of the S726 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 10: Related Documents

    If these points are not followed, the module or user device may fail. Indicates instructions or tips. This symbol provides advices or suggestions that may be useful when using the module. Related Documents Neoway_S726_Datasheet Neoway_S726_Product_Specifications Neoway_S726_EVK_User_Guide Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 11: Safety Recommendations

    Please follow the requirements below in design and use of the application for this module: Do not disassemble the module without permission from Neoway. Otherwise, we are entitled to ⚫ refuse to provide further warranty.

  • Page 12: About S726

    WCDMA: B1/B5/B8 GSM: 850/900/1800 MHz S726 runs Android 10 OS and has dimensions of (40.50±0.1) mm × (40.50±0.1) mm × (2.85±0.2) mm. There are 274 pins on the module and their pads are introduced in 146-pin LCC + 128-pin LGA package.

  • Page 13: Block Diagram

    TCXO Transceiver VBAT VDD_SDIO 32KHz eMCP VDD_SD LPDDR4X USIM1_VDD eMMC USIM2_VDD VDD1V85 Power VDD28 manager VDDCAMIO 32KHz VDDCAMA VDDCAMCORE 26MHz Baseband VDDCAMMOT Audio PWRKEY USB1 SDIO USIM*2 CAM*2 UART GPIOs USB2 Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 14: Basic Features

    S726 Hardware User Guide Chapter 2 About S726 2.3 Basic Features Table 2-2 Basic features of the S726 module Parameter Description Dimensions: (40.50± 0.1) mm × (40.50± 0.1) mm × (2.85± 0.2) mm ⚫ Physical features Package: 146-pin LCC + 128-pin LGA ⚫...
  • Page 15 2.4 GHz frequency band, supporting 802.11 b/g/n and the rate up to 150 WLAN Mbps 5 GHz frequency band, supporting 802.11a/n/ac and the rate up to 433 Mbps Bluetooth BT5.0 or earlier version Copyright © Neoway Technology Co., Ltd. All rights reserved.
  • Page 16 (RF) function is normal. The module will exit the idle mode when there is an incoming call or text message, and will re-enter the idle mode when the incoming call or voice call ends. Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 17: Reference Standards

    S726 Hardware User Guide Chapter 3 Reference Standards 3 Reference Standards S726 is designed by referring to the following standards: 3GPP TS 36.521-1 V9.10.0 User Equipment(UE) conformance specification; Radio transmission ⚫ and reception; Part 3: Radio Resource Management (RRM) conformance testing 3GPP TS 21.111 V9.0.0 USIM and IC card requirements...

  • Page 18: Module Pins

    Chapter 4 Module Pins 4 Module Pins There are 274 pins on S726 and their pads are introduced in 146-pin LCC + 128-pin LGA package. It supports interfaces including USB, MIPI, SDIO, UART, ADC, I2C and so on. 4.1 Pin Layout Figure 4-1 shows the pad layout of S726.

  • Page 19: Pin Description

    P1: 1.8 V/3.0 V self-adaptive =0V~0.3V =0V~0.3V USIM USIM =0.9*V =0.9*V USIM USIM USIM USIM =0V~0.1V =0V~0.1V USIM USIM SDIO P2: 1.8 V/3.0 V self-adaptive 1.8 V level feature: 3 V level feature: Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 20: Table 4-2 Pin Description

    Add a bypass capacitor (around 1.0μF to 2.2 μF) 1.8 V power output = 1.8 V norm VDDCAMIO I/O power supply for cameras, = 200 mA externally when using this pin. Copyright © Neoway Technology Co., Ltd. All rights reserved.
  • Page 21 Active low, it is pulled up RESET_N 179, 225 Module reset input to VBAT_BB internally. 179 pin is compatible with that of N1p. PWRKEY ON/OFF button Active low, it is pulled up to VBAT_BB internally. Copyright © Neoway Technology Co., Ltd. All rights reserved.
  • Page 22 If the hot-swapping function is not used, see USIM1_DET USIM1 plug detection 5.3.3 “USIM”. USIM1_RST USIM1 reset output USIM1_CLK USIM1 clock output Ω USIM1_DATA USIM1 data Connecting a 4.7 k pull-up resistor to Copyright © Neoway Technology Co., Ltd. All rights reserved.
  • Page 23 Support only master mode and support USB2_DP USB2 2.0 differential data (+) external USB hub extension USB_CC1 USB1 Type-C detect 1 Leave this pin floating if it is not used. USB_CC2 USB1 Type-C detect 2 Copyright © Neoway Technology Co., Ltd. All rights reserved.
  • Page 24 SD card data bit 0 SD_DATA1 SD card data bit 1 50 Ω single-terminal impedance control SD_DATA2 SD card data bit 2 SD_DATA3 SD card data bit 3 SD_CLK SD clock Copyright © Neoway Technology Co., Ltd. All rights reserved.
  • Page 25 Headset right channel HPH_GND Headset reference ground Ground this pin if not used. HPH_L Headset left channel HS_DET Headphone plug detect Pulled up to 2.8 V by default TP Interfaces TP_INT TP interrupt Copyright © Neoway Technology Co., Ltd. All rights reserved.
  • Page 26 LCD MIPI data 3 (+) Camera Interfaces MIPI_CSI0_CLK0_N CSI0 MIPI clock 0 (-) MIPI_CSI0_CLK0_P CSI0 MIPI clock 0 (+) MIPI_CSI0_LN0_N CSI0 MIPI data 0 (-) MIPI_CSI0_LN0_P CSI0 MIPI data 0 (+) Copyright © Neoway Technology Co., Ltd. All rights reserved.
  • Page 27 MIPI_CSI1_LN2_P CSI1 MIPI data 2 (+) MIPI_CSI1_LN3_N CSI1 MIPI data 3 (-) MIPI_CSI1_LN3_P CSI1 MIPI data 3 (+) MCAM_MCLK MCAM clock MCAM_RST MCAM reset MCAM_PWDN MCAM power down SCAM_MCLK SCAM clock Copyright © Neoway Technology Co., Ltd. All rights reserved.
  • Page 28 RGB Interface RGB_B Blue LED negative control With a current up to 27.7 mA RGB_R Red LED negative control Connect it to LED negative RGB_G Green LED negative control Copyright © Neoway Technology Co., Ltd. All rights reserved.
  • Page 29 Leave this pin floating if it is not used. GPIO_131 GPIO Can be multiplexed as I2S1_TX. GPIO_130 GPIO with interrupt Can be multiplexed as I2S1_RX. GPIO_133 GPIO Can be multiplexed as I2S1_WS. Copyright © Neoway Technology Co., Ltd. All rights reserved.
  • Page 30 Leave this pin floating if it is not used. GPIO_24 GPIO Leave this pin floating if it is not used. GPIO_94 GPIO Leave this pin floating if it is not used. Copyright © Neoway Technology Co., Ltd. All rights reserved.
  • Page 31 Leave this pin floating if it is not used. GPIO_18 GPIO Can be multiplexed as UART4_RXD. Reserved RESERVED 127, 155, 175, 181, 254, 263, 270 Leave these pins floating. RESERVED pins must be left floating. Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 32: Application Interfaces

    The power supply design of the S726 module is determined by the power input voltage. The designs Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 33: Figure 5-1 Power Supply Recommended Design 1

    Place a bypass capacitor (C2, C3, C4, C5) of low-ESR close to the module pin to filter out high- ⚫ frequency jamming from the power supply. The following circuit design is recommended to control the power supply. Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 34: Figure 5-2 Power Supply Recommended Design 2

    Recommended 4.3 V to 5.5 V input design: Figure 5-3 Power supply recommended design 3 VOUT VBAT 100kΩ 100uF 0.1uF 100uF 10uF 0.1uF 100pF 33pF 47.5kΩ PWR_EN Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 35: Figure 5-4 Power Supply Recommended Design 4

    2 times the voltage of the power supply. Place a bypass capacitor (C6, C7, C8) of low-ESR close to the module to filter out high- ⚫ frequency jamming from the power supply. Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 36: Charging And Battery

    5.1.2 Charging and Battery S726 supports battery charging management and the battery operating voltage ranges from 3.5 V to 4.2 V. The battery power supply pin and temperature detection pin need to be connected in parallel with ESD devices and capacitors to prevent damage to the module caused by abnormal electrical signals.

  • Page 37: Figure 5-5 Reference Design Of The Charging Interface

    100%, the charging stops. PDA, mobile POS, and other mobile devices all use the battery as a power supply. For different batteries, modify the charging/discharging curve in the software. S726 provides 5 pin interfaces. Table 5-1 Charging interface pinouts...

  • Page 38: Power Output

    5.1.3 Power Output The S726 module provides multiple power output interfaces, which can be used for the pull-up power supply of the I/O interface, level conversion, and power supply of peripherals including sensors, screens, cameras and other circuits.

  • Page 39: Vrtc

    2.6 V to 3.2 V and the typical value is 3 V. If the RTC fails, the time synchronization can be performed through the network after the module is powered on. Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 40: Control Interfaces

    5.2.1 Startup PWRKEY Startup After the S726 module is supplied power through VBAT, pulling PWRKEY down to low for at least 2.5s can start the module. PWRKEY is internally pulled up to VBAT. PWRKEY allows startup by the following methods: Figure 5-7 shows the reference design of starting the module by using a button.

  • Page 41: Figure 5-7 Reference Design Of Startup Controlled By A Button

    When the module is automatically powered on through CBL_PWR_N, it cannot be manually shut down; the module can only be shut down by directly disconnecting the system power supply. The S726 module can be started automatically through CBL_PWR_N, Figure 5-9 shows the reference design of automatic start.

  • Page 42: Figure 5-9 Reference Design Of Automatic Start Once Powered Up

    Do Not perform other operations on the module until it is initialized completely since the status of each pin of the module is uncertain if the initialization process has not been completed, Figure 5-10 shows the startup process. Figure 5-10 Startup process VBAT 2.5s<T<4s PWRKEY Active Inactive OTHER Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 43: Shutdown

    PWRKEY+RESET_N pin to ensure the normal operation of the module. 5.2.3 Volume up/down S726 has two volume control buttons, VOL_UP and VOL_DOWN. They are internally pulled up to 1.85 V and are active low. Figure 5-12 shows the reference design of the volume up/down control connection.

  • Page 44: Peripheral Interfaces

    Compliant with the USB 2.0 specifications, the interface supports a data transmission speed − rate up to 480 Mbps. Support USB OTG and Type-C − Support master and slave modes − Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 45: Table 5-4 Usb Interface Pinouts

    USB_CC2 USB1 Type-C detect 2 High level by default Leave this pin USB_ID USB1 OTG detect floating if it is not used. The following figures show the recommended USB circuits. Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 46: Figure 5-13 Reference Design Of Usb1 Type-C Interface (With Otg Function) Circuit

    USB_CC1 USB_CC2 Figure 5-14 Reference design of USB1 Micro interface (with OTG function) circuit VOUT VOUT 2 3 9 S726 module GPIO VBAT_BB USB Connector USB_VBUS USB_VBUS USB1_DM USB1_DP USB_ID USB_ID Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 47: Figure 5-15 Reference Design Of Usb2 Interface (With Otg Function) Circuit

    USB_VBUS USB2_DM USB2_DP For details, refer to the DEMO reference design provided by Neoway. U1 is a high-efficiency DC-DC boost chip, and other chips are available as well. Schematic Design Guidelines Connect a 1 μF and a 22 pF filter capacitor in parallel to the USB_VBUS pin. An ESD component must be added for the power cable.

  • Page 48: Uart

    Leave this pin floating if it is not used. UART2_TXD UART2 sending S726 provides 3 UART interfaces, all of which support 1.85 V. The following figure shows the reference design of UART0 interface: Figure 5-16 Reference design of UART0 interface Device...

  • Page 49: Figure 5-17 Recommended Level Conversion Circuit 1

    2 and designing the serial ports CTS and RTS by referring to recommended level conversion circuit 3 are recommended, as shown in Figure 5-18 and Figure 5-19. Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 50: Figure 5-18 Recommended Level Conversion Circuit 2

    Ensure that the base voltage of the triode is operating within the temperature range and the ⚫ transistor can be fully turned on. It is recommended to reserve the acceleration capacitor, which can adjust the delay of the level ⚫ conversion circuit in some cases. Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 51: Figure 5-19 Recommended Level Conversion Circuit 3

    For the accelerating capacitor, adjust it according to the actual test conditions; it is ⚫ recommended to reserve the capacitor. The base voltage of the transistor is the lower voltage between both sides. ⚫ Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 52: Usim

    USIM card (without hot-swapping function) interface. S726 provides 2 USIM card interfaces. It supports dual cards dual standby and is self-adaptable to 1.8 V/3.0 V USIM cards. Figure 5-20 shows the reference design of the USIM card interface connection.

  • Page 53: Figure 5-21 Reference Design Of The Usim Card (Without Hot-Swap) Interface

    C1 - C5 are designed to place the high-frequency filter capacitors whose value is not greater ⚫ than 33 pF. S726 supports USIM card plug detection. USIM_DET is a 1.85 V interrupt pin. The USIM ⚫ detection circuit works by checking the levels across the USIM_DET pin before and after a USIM card is inserted.

  • Page 54: Table 5-7 Sd Interface Pinouts

    Leave this pin floating if the hot-swapping function is not used and the function should be disabled in ⚫ software. The following figure shows the recommended circuit of the SD card interface. Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 55: Figure 5-22 Reference Design Of The Sd Card (With Hot-Swap) Interface

    The difference between the length of the CMD and DATA traces and the length of the CLK trace should not exceed 0.5 mm. SD_CLK needs to be grounded separately. ⚫ Spacing between DATA traces should be larger than 2 times trace width. ⚫ Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 56: I2C

    I2C data resistors S726 provides 5 I2C interfaces. The I2C interface of the module is an open-drain output and its reference voltage domain is VDD1V85. It integrates a 1.8/20 kΩ configurable pull-up resistor (the external circuit can reserves a position for a pull-up resistor; resistance ranging from 1.8 kΩ to 10 kΩ...

  • Page 57: Audio Interfaces

    S726 Hardware User Guide Chapter 5 Application Interfaces 5.4 Audio Interfaces S726 provides many audio input/output interfaces to meet your demands for the audio function in different environments. 5.4.1 Analog Audio Input Interface Table 5-9 Analog audio input interface pinouts...

  • Page 58: Analog Audio Output Interface

    Keep traces far away from interference sources, such as DC-DC power supply. ⚫ 5.4.2 Analog Audio Output Interface Table 5-10 Analog audio output interface pinouts Signal Function description EAR_P Earpiece output (+) EAR_N Earpiece output (-) Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 59: Figure 5-26 Recommended Design Of The Ear/Spk Interface

    Note the DC resistance of the ferrite beads because overlarge DC resistance will consume too much audio power while audio output components generally have a small impedance. A ferrite bead with a DC resistance lower than 0.1 Ω is recommended. Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 60: Headphone Interface

    Route the differential audio traces in compliance with the differential routing rules. ⚫ 5.4.3 Headphone Interface S726 provides one headphone interface that has left and right channels and support stereo output. It supports insertion detection function and 3-button inline control as well as embeds Class-AB amplifier. Headphone interface pinouts:...

  • Page 61: Figure 5-27 Reference Design Of The Headphone (Ctia) Circuit

    Figure 5-28 shows the circuits of headphone out of position and in position. Figure 5-28 Headphone interface diagram Pin definition (CTIA): Pin definition (OMTP): 1—MIC 1—GND 2—GND 2—MIC 3—R 3—R 4—L 4—L 5—HS_DET 5—HS_DET Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 62: Video Interfaces

    Table 5-12 LCD interface pinouts Signal Function description PWM output LCD_RST LCD reset signal LCD_TE LCD frame reading flag bit MIPI_DSI_CLK_N LCD MIPI clock (-) MIPI_DSI_CLK_P LCD MIPI clock (+) Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 63: Figure 5-29 Reference Design Of Lcd Interface

    LCD_TE LCD_TE LCD_RST LCD_ RST GPIO_34 LCD_ID0 MIPI_DSI_LANE2_P TDP2 MIPI_DSI_LANE2_N TDN2 TDP1 MIPI_DSI_LANE1_P TDN1 MIPI_DSI_LANE1_N CLK_P MIPI_DSI_CLK_P CLK_N MIPI_DSI_CLK_N TDP0 MIPI_DSI_LANE0_P MIPI_DSI_LANE0_N TDN0 TDP3 MIPI_DSI_LANE3_P TDN3 MIPI_DSI_LANE3_N S726 Module LCD Connector Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 64: Figure 5-30 Reference Design Of Lcd Backlight

    In the design process, it is recommended to use the serial common mode inductance on the ⚫ MIPI wiring to improve the electromagnetic radiation disturbance. Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 65: Tp Interface

    Chapter 5 Application Interfaces 5.5.2 TP Interface S726 provides one I2C interface dedicated to touch panels (TP) and also provides the required power supply and interruption pin. The following figure shows the reference design of the interface connection. The I2C interface must be dedicated and does not support multiplexing. The interface has internal integrated configurable 1.8/20 kΩ...

  • Page 66: Table 5-14 Camera Interface Pinouts

    MIPI_CSI1_LN2_P CSI1 MIPI data 2 (+) MIPI_CSI1_LN3_N CSI1 MIPI data 3 (-) MIPI_CSI1_LN3_P CSI1 MIPI data 3 (+) MCAM_MCLK MCAM clock MCAM_RST MCAM reset MCAM_PWDN MCAM power down SCAM_MCLK SCAM clock Copyright © Neoway Technology Co., Ltd. All rights reserved.
  • Page 67 I2C DCAM_MCLK DCAM clock DCAM_RST DCAM reset DCAM_PWDN DCAM power down DCAM_I2C_SCL Camera I2C clock Open-drain output, with internal integrated 1.8/20 kΩ pull-up resistors DCAM_I2C_SDA Camera I2C data Camera dedicated I2C Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 68: Figure 5-32 Reference Design Of 2-Lane Camera Interface

    Common Mode Filler MIPI_CSI0_LN0_P MDP0 MIPI_CSI0_LN1_N MDN1 Common Mode Filler MDP1 MIPI_CSI0_LN1_P MIPI_CSI0_LN2_N MDN2 Common Mode Filler MIPI_CSI0_LN2_P MDP2 MIPI_CSI0_LN3_N MDN3 Common Mode Filler MDP3 MIPI_CSI0_LN3_P Camera Connector 2 S726 Module Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 69: Figure 5-33 Reference Design Of 3-Lane Camera Interface

    MDP1 MIPI_CSI0_LN1_P Camera Connector 2 AVDD2.8V DOVDD1.8V VDD1V85 DCAM_I2C_SCL DCAM_I2C_SDA DCAM_MCLK MCLK DCAM_RST RESET DCAM_PWDN PWDN MIPI_CSI0_CLK1_N Common Mode Filler MIPI_CSI0_CLK1_P MIPI_CSI0_LN2_N Common Mode Filler MIPI_CSI0_LN2_P S726 Module Camera Connector 3 Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 70: Rf Interface

    DNI- - 0Ω VDDCAMA VOUT EXT_VDDCAMA VBAT 2.2uF EXT_CAMA_EN 100K 1 µF 5.6 RF Interface Table 5-15 RF antenna interface pinouts Signal Function description Remarks 50 Ω impedance characteristics ANT_MAIN Main Antenna Interfaces Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 71: Ant_Main/Ant_Drx Antenna Interface

    Wi-Fi/Bluetooth Antenna Interface 5.6.1 ANT_MAIN/ANT_DRX Antenna Interface The ANT_MAIN/ ANT_DRX antenna interfaces of S726 require the 50 Ω impedance feature. The wiring from the module interfaces to antennas should also be controlled within the impedance range. Therefore, in order to ensure the RF performance, it is necessary to add a matching network in the middle.

  • Page 72: Ant_Wifi/Bt Antenna Interface

    5.6.2 ANT_WIFI/BT Antenna Interface The ANT_WIFI/BT pin of the S726 module is shared by the Wi-Fi and Bluetooth antennas. It has a characteristic impedance of 50 Ω. For the schematic design and the PCB design of the Wi-Fi antenna and Bluetooth antenna interface, see the requirements in section 5.6.1 “ANT_MAIN/ANT_DRX Antenna Interface”.

  • Page 73: Figure 5-39 Gnss Rf Structure

    50 Ω impedance is required for the feeder and PCB traces; Ensure the trace not be too long. The ⚫ power supply of the active antenna is fed by the 47 nH to 100 nH inductance through the signal traces. Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 74: Antenna Assembling

    5.6.3.2 Reference Design of Passive GNSS Antenna After the GNSS antenna receives the GNSS satellite signal, it is transmitted to the ANT_GNSS pin of the S726 module through the PCB trace. Figure 5-41 shows a reference design of the passive GNSS antenna.

  • Page 75: Figure 5-42 Murata Rf Connector Encapsulation Specifications

    Therefore, this connection method is recommended only for 2.4 GHz Wi-Fi or BT/BLE antennas. The following figure shows the layout of the 2.4 GHz ceramic chip antenna. SLDA52-2R540G-S1TF is used as an example. Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 76: Figure 5-44 Antenna Layout

    Figure 5-45 shows the layout for the area between the antenna and ground that is marked as "5" in Figure 5-44. Figure 5-45 Layout around the antenna For more details, refer to the antenna manual and instruction documentation. Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 77: Gpio Interfaces

    Leave this pin floating if it is not used. GPIO_27 GPIO Leave this pin floating if it is not used. GPIO_55 GPIO Leave this pin floating if it is not used. Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 78: Multi-Function Interfaces

    GPIO Leave this pin floating if it is not used. GPIO_18 GPIO Can be multiplexed as UART4_RXD. S726 provides 41 GPIO interfaces, 5 of which have the interrupt function. 5.8 Multi-Function Interfaces Table 5-17 Pin definition description Function (default) GPIO...
  • Page 79 DCAM_I2C_SCL GPIO_74 EXTINT14(G0) DCAM_I2C_SDA GPIO_75 EXTINT15(G0) GPIO_154 GPIO_154 I2C4_SCL GPIO_155 GPIO_155 I2C4_SDA GPIO_131 GPIO_131 I2S1_TX GPIO_130 GPIO_130 I2S1_RX EXTINT13 GPIO_133 GPIO_133 I2S1_WS GPIO_132 GPIO_132 I2S1_SCLK LCD_RST GPIO_50 LCD_TE GPIO_51 MCAM_PWDN GPIO_46 Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 80: Other Interfaces

    PWMCG1 GPIO_8 GPIO_8 RFCTL17 S726 has 61 pins with the multiplexed function and their pin types are P3 and levels are 1.85 V. When multiplexing the pin is required, contact Neoway FAEs. 5.9 Other Interfaces 5.9.1 ADC The module provides one ADC channel with a 12-bit resolution, and it can detect the voltage ranging from 0.1 V to 1.2 V.

  • Page 81: Usb_Boot

    Connect it to motor positive S726 provides one motor drive interface and only supports ERM motor. Its output voltage ranges from 1.8 V to 3.3 V and the maximum current that can start the motor is 100 mA. The following shows the reference design of the motor interface.

  • Page 82: Figure 5-47 Reference Design Of The Motor Interface

    S726 Hardware User Guide Chapter 5 Application Interfaces Figure 5-47 Reference design of the motor interface Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 83: Electrical Characteristics And Reliability

    If the ambient temperature exceeds the operating temperature of the module, some individual RF indicators of the module may deteriorate. Table 6-2 S726 temperature features Parameter Minimum Value Typical Value Maximum Value Operating -30° C +25° C +75° C Storage -40° C +25° C +90° C Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 84: Esd Protection

    Contact Discharge Air Discharge ±8kV ±15kV ±6kV ±6kV ANT interface ±8kV ±15kV Cover ±0.5kV ±1kV Others Test data in the above table is obtained from tests performed on a S726 EVB. Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 85: Rf Characteristics

    Chapter 7 RF Characteristics 7 RF Characteristics The S726 intelligent module supports a variety of 2G/3G/4G wireless network standards and bands, as well as the GNSS positioning function and the Wi-Fi&BT connection. This chapter describes the RF features of S726.

  • Page 86: Tx Power And Rx Sensitivity

    S726 Hardware User Guide Chapter 7 RF Characteristics 7.2 TX Power and RX Sensitivity Table 7-2 S726 TX power and RX sensitivity description Band Transmit power Receiving Sensitivity GSM850 33 dBm+1/-3 dB <-108 dBm EGSM900 33 dBm+1/-3 dB <-108 dBm...

  • Page 87: Wlan/Bt Characteristics

    Cold start time (open space) <35 s (@-130dBm) GNSS data type Passive antenna It is recommended to use GPS, GPS+GLONASS or GPS+BDS. 7.4 WLAN/BT Characteristics Table 7-4 S726 WLAN/BT TX power and RX sensitivity Receiving Operating band Rate Transmit power sensitivity ≤-96dBm...
  • Page 88 3.0± 2.0 dBm ≤-85dBm 3-DH5 3.0± 2.0 dBm ≤-90dBm 2 Mbps 0± 2.0 dBm ≤-95dBm 1 Mbps 0± 2.0 dBm BLE_5.0 ≤-96dBm 500 Kbps 0± 2.0 dBm ≤-102dBm 125 Kbps 0± 2.0 dBm Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 89: Mechanical Characteristics

    S726 Hardware User Guide Chapter 8 Mechanical Characteristics 8 Mechanical Characteristics This chapter describes mechanical characteristics of the S726 module. 8.1 Dimensions Figure 8-1 S726 top and side view dimensions (unit: mm) Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 90: Label

    Temperature: 20°C to 26°C ⚫ Humidity: 40%-60% ⚫ Time: 120 days ⚫ 8.3.1 Tray The mass-produced S726 will be packaged and delivered in the following manner: Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 91: Figure 8-3 Tray Package

    S726 Hardware User Guide Chapter 8 Mechanical Characteristics Figure 8-3 Tray package Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 92: Figure 8-4 Tray

    S726 Hardware User Guide Chapter 8 Mechanical Characteristics Figure 8-4 Tray Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 93: Moisture

    Chapter 8 Mechanical Characteristics 8.3.2 Moisture S726 is a level 3 moisture-sensitive electronic element, in compliance with IPC/JEDEC J-STD-020 standard. After the module is unpacked, if it is exposed to the air for a long time, the module will get damped, and may be damaged during reflow soldering or laboratory soldering.

  • Page 94: Mounting

    S726 Hardware User Guide Chapter 9 Mounting 9 Mounting This chapter describes the module PCB package and application PCB package of S726, as well as the key points of SMT related technology. 9.1 PCB Package Figure 9-1 Bottom view of the S726 PCB package (unit: mm)

  • Page 95: Application Foot Print

    Chapter 9 Mounting 9.2 Application Foot Print S726 adopts the package form of 146-pin LCC + 128-pin LGA. The recommended PCB package is as follows: Do not route traces, punch, pour copper (if any, add green oil or white oil to the surface), or make a pad under the Keepout area (the semicircle shape area in the figure below).

  • Page 96: Solder Paste

    220°C for more than 45 seconds and the peak temperature reaches 240°C. 9.5 SMT Oven Temperature Profile Neoway will not provide warranties for heat-responsive element abnormalities caused by improper temperature control. Thin or long PCB might bend during SMT. So, use loading tools during the SMT and reflow soldering process to avoid poor solder joint caused by PCB warping.
  • Page 97 245 °C (depending on the type of the solder paste), and heat the module till the solder paste is melted. Then remove the module using tweezers. Do not shake the module in high temperatures while removing it. Otherwise, the components inside the module might get misplaced. Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 98: Abbreviations

    Frequency Division Multiple Access Full Rate GPRS General Packet Radio Service Global System for Mobile Communications Half Rate Integrated Circuit IMEI International Mobile Equipment Identity Liquid Crystal Display Light Emitting Diode Copyright © Neoway Technology Co., Ltd. All rights reserved.
  • Page 99 Subscriber Identity Module Short Message Service SRAM Static Random Access Memory Terminal Adapter TDMA Time Division Multiple Access UART Universal Asynchronous Receiver-Transmitter USSD Unstructured Supplementary Service Data VSWR Voltage Standing Wave Ratio Copyright © Neoway Technology Co., Ltd. All rights reserved.

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