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Neoway S720 Series Hardware User's Manual

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Hardware User Guide
Issue 1.1

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Summary of Contents for Neoway S720 Series

  • Page 1 Hardware User Guide Issue 1.1...
  • 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 ..........................68 5.6.1 ANT_MAIN/ANT_DRX Antenna Interface ................. 68 5.6.2 ANT_WIFI/BT Antenna Interface ..................70 5.6.3 ANT_GNSS Antenna Interface ..................70 5.6.3.1 Reference Design of Active GNSS Antenna ..............70 Copyright © Neoway Technology Co., Ltd. All rights reserved.
  • Page 4 9 Mounting ....................89 9.1 PCB Package ..........................89 9.2 Application Foot Print ......................... 90 9.3 Stencil ............................90 9.4 Solder Paste ..........................91 9.5 SMT Oven Temperature Profile ....................91 Copyright © Neoway Technology Co., Ltd. All rights reserved.
  • Page 5 Figure 5-23 Main/auxiliary electret MIC (ECM) reference design ............ 56 Figure 5-24 Recommended design of the EAR/SPK interface ............57 Figure 5-25 Reference design of the headphone circuit (CTIA) ............59 Copyright © Neoway Technology Co., Ltd. All rights reserved.
  • Page 6 Figure 8-4 Tray ..........................88 Figure 9-1 Bottom view of S720 package (unit: mm) ............... 89 Figure 9-2 Top view of S720 package (unit: mm) ................90 Figure 9-3 Oven temperature profile ....................91 Copyright © Neoway Technology Co., Ltd. All rights reserved.
  • Page 7 Table 5-19 USB_BOOT interface description .................. 78 Table 5-20 Motor driver interface description ................... 78 Table 6-1 S720 operating conditions ....................80 Table 6-2 S720 temperature characteristics ..................80 Table 6-3 S720 ESD protection characteristics ................81 Copyright © Neoway Technology Co., Ltd. All rights reserved.
  • Page 8 Table 7-1 S720 operating bands ...................... 82 Table 7-2 S720 TX power and RX sensitivity description ..............83 Table 7-3 GNSS Technical parameters .................... 83 Table 7-4 S720 WLAN/BTTX power and RX sensitivity ..............84 Copyright © Neoway Technology Co., Ltd. All rights reserved. viii...

  • Page 9: About This Document

    S720 Hardware User Guide About This Document About This Document Scope This document is applicable to the S720 series. It defines the features, indicators, and test standards of the S720 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 S720 Hardware User Guide About This Document Related Documents Neoway_S720_Datasheet Neoway_S720_Product_Specifications Neoway_S720_EVK_User_Guide Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 11: Safety Recommendations

    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 S720

    S720 can meet the requirements for high speed and multimedia functions in industrial and consumer applications. Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 13: Block Diagram

    VBAT VDD_SDIO 32 kHz eMCP VDD_SD LPDDR3 USIM1_VDD eMMC USIM2_VDD VDD1V85 Power VDD28 manager VDDCAMIO 32 kHz VDDCAMA VDDCAMCORE 26 MHz Baseband VDDCAMMOT Audio PWRKEY USB2.0 SDIO USIM*2 CAM*2 UART GPIOs Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 14: Basic Features

    TDD-LTE: 23 dBm+1/-3 dB (Power Class 3) Satellite positioning GPS/BDS/GLONASS 2G/3G/4G antenna, 4G diversity reception antenna, GNSS antenna, Antenna Interfaces and 2.4G Wi-Fi/BT antenna All of each has a characteristic impedance of 50 Ω. Copyright © Neoway Technology Co., Ltd. All rights reserved.
  • Page 15 0.1 V - 1.2 V. Supports AP mode and STA mode WLAN 2.4 GHz frequency band, supporting 802.11 b/g/n and the rate up to 72.2 Mbps Bluetooth BLE 4.2 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

    3GPP TS 21.111 V9.0.0 USIM and IC card requirements  3GPP TS 31.102 V9.19.0 Characteristics of the Universal Subscriber Identity Module (USIM) application  3GPP TS 31.111 V9.12.2 Universal Subscriber Identity Module (USIM) Application Toolkit (USAT) Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 18: Module Pins

    USB, MIPI, SDIO, UART, ADC, I2C and so on. 4.1 Pin Layout The following figure shows the pad layout of S720. Figure 4-1 S720 pin definition (top view) POWER UART OTHER RESERVED AUDIO CAMERA GPIO Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 19: Pin Description

    USIM USIM USIM USIM =0V~0.1V =0V~0.1V USIM USIM 1.8 V level feature: 3V level feature: SDIO P2: 1.8 V/3.0 V self-adaptive =0.7*V =0.7*V SDIO SDIO SDIO SDIO =0V~0.3V =0V~0.3V SDIO SDIO Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 20: Table 4-2 Pin Description

    = 1.8 V norm VDDCAMIO I/O power supply for cameras, externally when using this pin. = 200 mA sensors and other peripherals Leave this pin floating if it is not used. Copyright © Neoway Technology Co., Ltd. All rights reserved.
  • Page 21 179, 225 Module reset input it is pulled up to VBAT_BB internally. Pin 179 is compatible with that of N1p. Active low, it is pulled up to VBAT_BB PWRKEY ON/OFF button 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 ADC Interface 12-bit. Detectable voltage range: 0.1 – 1.2 V. = 0.1 V Universal analog-to-digital signal = 1.2 V Leave this pin floating if it is not used. Copyright © Neoway Technology Co., Ltd. All rights reserved.
  • Page 24 SD card data bit 3 SD_CLK SD clock SD_CMD SD command If the hot-swapping function is not used, see SD_DET SD card plug detection 5.3.4 "SD". Audio Interface MIC1_P Main MIC input (+) Copyright © Neoway Technology Co., Ltd. All rights reserved.
  • Page 25 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 Interface TP_INT TP interrupt TP_RST TP reset Active low Copyright © Neoway Technology Co., Ltd. All rights reserved.
  • Page 26 LCD MIPI data 3 (-) MIPI_DSI_LANE3_P LCD MIPI data 3 (+) Camera Interface MIPI_CSI1_CLK_N CSI1 MIPI clock (-) MIPI_CSI1_CLK_P CSI1 MIPI clock (+) MIPI_CSI1_LN0_N CSI1 MIPI data 0 (-) MIPI_CSI1_LN0_P CSI1 MIPI data 0 (+) Copyright © Neoway Technology Co., Ltd. All rights reserved.
  • Page 27 Battery current detect (-) Ground the pin if not used. CS_P Battery current detect (+) 10 k NTC thermistor is supported by BAT_THERM Battery temperature detection default. Connect this pin to an external 10 Copyright © Neoway Technology Co., Ltd. All rights reserved.
  • Page 28 GNSS_LNA_EN GNSS LNA enable control External GNSS LNA dedicated enable pin. GRFC_8 RF output control Antenna tuning control. GRFC_6 RF output control Antenna tuning control. Copyright © Neoway Technology Co., Ltd. All rights reserved.
  • Page 29 Leave this pin floating if it is not used. GPIO_143 GPIO Leave this pin floating if it is not used. GPIO_93 GPIO with interrupt Can be multiplexed as SPI0_CLK. GPIO_90 GPIO with interrupt Can be multiplexed as SPI0_CS. Copyright © Neoway Technology Co., Ltd. All rights reserved.
  • Page 30 177, 178, 180, 181, 182, 195, 196, 197, 198, 199, 200, 201, 205, 232, 239, 242, Leave these pins floating. 246, 254, 257, 263, 264, 265, 267, 270 RESERVED pins must be left floating. Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 31: Application Interfaces

    The power supply design of the S720 module is determined by the power input voltage. The designs Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 32: 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 33: 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 34: 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 35: Charging And Battery

    B: using current of 450 mA when the battery voltage ranges from 2.05 to 3.05 V.  Constant current charging (when the battery voltage is between 3.05 V and 4.18 V). Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 36: Table 5-1 Charging Interface Pinout

    BAT_THERM pin. Otherwise the battery can not be charged, the battery level is displayed incorrectly, or other battery failures occur. Figure 5-5 shows the reference design of the charging interface connection. Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 37: Power Output

    Add a bypass capacitor (1.0 μF- 2.2 μF) externally before VDD28 Always on using this pin. The pin is always on to supply power. Leave this pin floating if it is not Copyright © Neoway Technology Co., Ltd. All rights reserved.
  • Page 38 SD_DATA pull-ups USIM1_VDD 1.8/3.0 USIM1 power output USIM2_VDD 1.8/3.0 USIM2 Power output VDD28 supplies power to the internal GNSS LNA of the module and is always on even in sleep mode. Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 39: Vrtc

    Active low. Leave this pin floating if it is not used. VOL_DOWN Volume down control The module will start automatically after Automatic startup CBL_PWR_N 186 this pin is grounded. It is internally control pulled up to VBAT_BB. Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 40: Startup

    Figure 5-8 Reference design of startup controlled by an MCU VBAT_BB PWRKEY 1KΩ >2.5s S720 Module MCU_GPIO 4.7kΩ 47kΩ 0.1uF CBL_PWR_N Startup The S720 module can be started automatically through CBL_PWR_N, Figure 5-9 shows the reference Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 41: 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 states of each pin are uncertain if the initialization process has not been completed. Figure 5-10 shows the startup process. Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 42: Shutdown

    Pulling down PWRKEY and RESET_N at the same time for more than 8s will forcibly shutting down the module. The shutdown sequence is as follows: Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 43: Volume Up/Down

    V1.85 V internally and active low. For the reference design of the volume up/down control connection, see Figure 5-12. Figure 5-12 Reference design of the volume up/down control connection VDD1V85 1kΩ VOL_UP S720 Module 0.1uF Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 44: Peripheral Interfaces

    Support master/slave mode but not differential support external USB hub extension USB_DP data (+) High level by default Leave this pin USB_ID USB OTG detect floating if it is not used. Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 45: Figure 5-13 Reference Design Of Usb Micro Interface (With Otg Function) Connection

    USB_DP USB_ID USB_ID 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 capacitors in parallel to the USB_VBUS pin. An ESD ...

  • Page 46: Uart

    S720 provides 3 UART interfaces, all of which support 1.85 V. The following figure shows the reference design of UART0 interface: Figure 5-14 Reference design of UART connection Device S720 Module MCU_TXD UART0_RXD MCU_RXD UART0_TXD MCU_UART_RTS UART0_CTS MCU_UART_CTS UART0_RTS Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 47: Figure 5-15 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 5-16 and Figure 5-17. Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 48: Figure 5-16 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 49: Figure 5-17 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 50: Usim

    Figure 5-18 Reference design of the USIM card (with hot-swap) interface 20Ω USIM_DATA R5 4.7kΩ 20Ω USIM_CLK DATA 20Ω USIM_RST USIM_VDD 20Ω USIM_DET USIM Card Slot S720 Module VDD1V85 R6 47kΩ Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 51: Figure 5-19 Reference Design Of The Usim Card (Without Hot-Swap) Interface

    USIM card (without hot-swapping function) interface. Figure 5-19 Reference design of the USIM card (without hot-swap) interface 20Ω USIM_DATA R5 4.7kΩ 20Ω USIM_CLK DATA 20Ω USIM_RST USIM_VDD USIM_DET USIM Card Slot S720 Module 47kΩ VDD1V85 Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 52: Table 5-7 Sd Interface Pinouts

    SD is a dual-voltage SD 3.0 interface and support up to SDR 200 MHz or DDR 50 MHz clock frequency. It can be downward compatible with DS, HS, SDR12, SDR25, SDR50, and SDR104 modes. Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 53: Figure 5-20 Reference Design Of The Sd Card (With Hot-Swap) Interface

    CMD, CLK, and DATA are high-speed signal traces, which need to be controlled by 50 Ω single-  terminal impedance. The traces should go as far as possible on the inner layer and control the Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 54: I2C

    It supports a maximum speed rate of 3.4 Mbps. The following shows the reference design of the I2C connection. Figure 5-21 Reference design of the I2C connection VDD1V85 I2C_SDA I2C_SDA I2C_SCL I2C_SCL Device S720 Module Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 55: Audio Interface

    R1, R2 are used to improve ESD protection capability; R1, C1, R2, C2 and internal input impedance form a high-pass filter.  The capacitors at C4 and C5 are mainly used to filter out RF jamming frequencies. Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 56: Analog Audio Output

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

  • Page 57: Figure 5-24 Recommended Design Of The Ear/Spk Interface

    ESD diodes at D1 and D2 are used to prevent ESD from damaging the module.  Ferrite beads at B1 and B2 are used to filter out high-frequency noise. It is recommended to use ferrite beads specifically for audio. Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 58: Headphone

    AO Headset reference ground HPH_L AO Headset left channel HS_DET Headphone plug detect MIC2_P Headphone MIC input (+) MIC2_N Headphone MIC input (-) HPH_MIC_DET Headphone MIC detect HPH_MIC_BIAS PO Headphone MIC bias voltage Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 59: Figure 5-25 Reference Design Of The Headphone Circuit (Ctia)

    The following figure shows the circuits of headphone out of position and in position. Figure 5-26 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 60: Video Interfaces

    1.5 Gbps. The number of MIPI_DSI can be flexibly configured according to different display requirements. LCD interface pinout: Table 5-12 LCD interface pinouts Signal Function description Remarks PWM output LCD_RST LCD reset signal LCD_TE LCD frame reading flag bit MIPI_DSI_CLK_N LCD MIPI clock (-) Copyright © Neoway Technology Co., Ltd. All rights reserved.
  • Page 61 LCD MIPI data 1 (-) MIPI_DSI_LANE1_P LCD MIPI data 1 (+) MIPI_DSI_LANE2_N LCD MIPI data 2 (-) MIPI_DSI_LANE2_P LCD MIPI data 2 (+) MIPI_DSI_LANE3_N LCD MIPI data 3 (-) MIPI_DSI_LANE3_P LCD MIPI data 3 (+) Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 62: Figure 5-27 Lcd Reference Design

    Figure 5-27 "LCD reference design"). Otherwise, use an independent LDO to supply power since the LDO can avoid the leakage of the LCD driver IC in standby mode, better control the power supply, and reduce the standby power consumption. Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 63: Figure 5-28 Reference Design Of The Backlight

    Figure 5-28 Reference design of the backlight Schematic Design Guidelines  According to the LCD backlight requirements, select the corresponding driver chip.  The driver circuit should be designed according to the driver chip IC. Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 64: Table 5-13 Tp Interface Pinouts

    Power supply for LCM and sensor TP_INT TP interrupt TP_RST TP reset Active low TP_I2C_SDA TP I2C data Open-drain output, with internal integrated 1.8/20 kΩ pull-up resistors TP TP_I2C_SCL TP I2C clock dedicated I2C Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 65: Camera

    Function description Remarks MIPI_CSI1_CLK_N CSI1 MIPI clock (-) MIPI_CSI1_CLK_P CSI1 MIPI clock (+) MIPI_CSI1_LN0_N CSI1 MIPI data 0 (-) MIPI_CSI1_LN0_P CSI1 MIPI data 0 (+) MIPI_CSI1_LN1_N CSI1 MIPI data 1 (-) Copyright © Neoway Technology Co., Ltd. All rights reserved.
  • Page 66 Camera I2C clock Open-drain output, with internal integrated configurable 1.8/20 kΩ CAM_I2C_SDA Camera I2C data pull-up resistors Camera dedicated I2C The following shows the reference design of 2-lane camera interface connection. Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 67: Figure 5-30 Reference Design Of 2-Lane Camera Interface Connection

    MIPI a high-speed signal with a transmission speed rate up to 1.5 Gbps. It is recommended that the wiring length be less than 260 mm. Use differential routing for each group of signal lines and Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 68: Rf Interface

    The matching network is generally classified into L type, T type or π type, as shown in the figures below, respectively. The use of π type network is recommended. Figure 5-31 L-type network ANT_MAIN S720 Module Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 69: Figure 5-32 T-Type Network

    If you adopt an SMA connector, a big RF solder pad might result in great parasitic capacitance, which will affect the antenna performance. Remove the copper on the first and fourth layers or all layers of a multiple-layer PCB under the RF solder pad. Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 70: Ant_Wifi/Bt Antenna Interface

    After the antenna receives GNSS satellite signals, the LNA (low noise amplifier) amplifies the signals first and then transmits them to ANT_GNSS through feeder and PCB layout. The following figure shows Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 71: 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 S720 module through the PCB trace. Figure 5-37 shows a reference design of the passive GNSS antenna. Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 72: Antenna Assembling

    DC/DC power if using RF wires. The following methods are commonly used to assemble antenna:  GSC RF connector MM9329-2700RA1 from Murata is recommended. The following figure shows its encapsulation specifications. Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 73: Figure 5-38 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 74: Figure 5-40 Antenna Layout

    Figure 5-41 shows the layout for the area between the antenna and ground that is marked as "5" in Figure 5-40. Figure 5-41 Layout around the antenna For more details, refer to the antenna manual and instruction documentation. Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 75: Gpio Interfaces

    Leave this pin floating if it is not used. GPIO_141 GPIO Leave this pin floating if it is not used. S720 provides 25 GPIO interfaces, 4 of which have the interrupt function. Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 76: Multi-Function Interfaces

    GPIO_74 EXTINT14 CAM_I2C_SDA GPIO_75 EXTINT15 SENSOR_I2C_SCL GPIO_127 - SENSOR_I2C_SDA 92 GPIO_128 - VOL_DOWN GPIO_121 EXTINT11 KEYOUT0 GPIO_49 GPIO_49 I2C0_SDA I2C0 is a camera dedicated interface. GPIO_48 GPIO_48 I2C0_SCL GPIO_24 GPIO_24 RFCTL5 Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 77: Other Interfaces

    GRFC_6 GPIO_25 There are 46 multiplexing pins on S720. The pin types are P3 and the pin level is 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 78: Usb_Boot

    Table 5-20 Motor driver interface description Signal Function description Remarks VIB_DRV Motor driver Connect it to motor positive S720 provides one motor drive interface and only supports ERM motor. Its output voltage ranges from Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 79: Figure 5-43 Reference Design Of The Motor Interface

    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 circuit connection. Figure 5-43 Reference design of the motor interface 3 3pF S720 Module VIB_DRV 33pF 1uF D1 Motor interface Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 80: 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 S720 temperature characteristics 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 81: Esd Protection

    Test environment: humidity 45%; temperature 25° C Table 6-3 S720 ESD protection characteristics Testing Point Contact Discharge Air Discharge ANT interface Cover Others Test data in the above table is obtained from tests performed on a S720_DEMO. Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 82: Rf Characteristics

    2570 - 2620 MHz TDD-LTE B39 1880 - 1920 MHz 1880 - 1920 MHz TDD-LTE B40 2300 - 2400 MHz 2300 - 2400 MHz TDD-LTE B41 2535 - 2655 MHz 2535 - 2655 MHz Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 83: Tx Power And Rx Sensitivity

    TDD-LTE B41 band bandwidth is 120 MHz and its channel range is 40040 - 41240. 7.3 GNSS Technical Parameters Table 7-3 GNSS Technical parameters Parameter Notice GPS L1 operating frequency 1575.42± 1.023 MHz Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 84: Wlan/Bt Characteristics

    1 Mbps 802.11b (2.4 GHz) 11 Mbps 6 Mbps 802.11g (2.4 GHz) 54 Mbps MCS0 802.11n (2.4 GHz, 20 MHz) MCS7 MCS0 802.11n (2.4 GHz, 40 MHz) MCS7 Bluetooth 1 Mbps Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 85: Mechanical Characteristics

    S720 Hardware User Guide Chapter 8 Mechanical Characteristics 8 Mechanical Characteristics This chapter describes mechanical characteristics of the S720 module. 8.1 Dimensions Figure 8-1 S720 Top and side view dimensions (unit: mm) Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 86: Label

     Temperature: 20° C to 26° C  Humidity: 40%-60%  Time: 120 days 8.3.1 Tray The mass-produced S720 will be packaged and delivered in the following manner: Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 87: Figure 8-3 Tray Package

    S720 Hardware User Guide Chapter 8 Mechanical Characteristics Figure 8-3 Tray package Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 88: Moisture

    90 degrees for more than 12 hours. In addition, since the package tray is made of non-high temperature resistant material, do not bake modules with the package tray directly. Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 89: Mounting

    This chapter describes the module PCB package and application PCB package of S720, as well as the key points of SMT related technology. 9.1 PCB Package Figure 9-1 Bottom view of S720 package (unit: mm) Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 90: Application Foot Print

    "Keep out" area (the semicircle shape area in the figure below). Figure 9-2 Top view of S720 package (unit: mm) 9.3 Stencil The recommended stencil thickness is at least 0.15 mm to 0.20 mm. Copyright © Neoway Technology Co., Ltd. All rights reserved.

  • Page 91: 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 92 245 ° 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 93 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 94 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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