01. NEQTO Bridge Module

Overview

The NEQTO Engine installed on the NEQTO Bridge Module makes it easy to connect to NEQTO Console and the customer's cloud environment. It also allows customers to easily control sensors and devices via physical interfaces.

It has the following features:

  • Wi-Fi, LTE Cat.1, LTE Cat.M1, LTE Cat.NB1(*1), LAN(*2) communications are supported.
    *1: Please contact us if you would like Cat.NB1.
    *2: Please refer to LAN Module Installation.
  • Because each module is designed under a common interface, it is easy to replace modules.
  • Built-in Antenna (If you would like an external antenna, please contact us.)
  • 3.0 V - 5.25 V operating voltage range.
  • Low-power functionality
  • Photocouplers and MOS relays can transmit signals while electrically isolated from the customer's circuit, and can drive a 12 V interface. (24V interface is available for MOS relay)


Main Specifications (NEQTO Bridge Module Common Specs)

ItemSpecsNotes
CPUSTM32L4R5
(Cortex®-M4 / ROM 2MB / RAM 640KB)
Flash ROM (External)16 MB
Digital I/OUART x 2 ch
SPI x 2 ch
I2C x 2 ch
GPIO x 13 ch
NRST
USER_SW
SYSTEM_LED_BLUE
SYSTEM_LED_RED
Photo coupler input1 ch
NODE1_PhotoMOS_IN		12 VDC, 4 mA
MOS Relay Output1 ch
NODE1_RELAY_OUT		- Relay contact: 1a
- Control capacity 24 VDC, 0.5 A
Analog Input2 ch
ANALOG1, ANALOG2		Conversion voltage range: 0 - VREF+ = 3.3V (Note 1)
Connector2.00 mm Pitch pin header 26 pin x 2PSS-220153-13
(Hirosugi Keiki Co.,Ltd.)
Main Power Supply (VDD_BATT)3.0 V - 5.25 V2 A@5 V recommended
RTC Power Supply (VDD_RTC)1.55 V - 3.6 VOpen when not in use.
Operating Temperature Conditions-10 ℃ - 50 ℃
Storage Temperature Conditions-10 ℃ - 50 ℃
  • Note 1) VREF+ is the input reference voltage of the ADC, supplied by the regulator (XC6215B332GR-G) on the NEQTO Bridge Module. The output deviation of the XC6215B332GR-G is 3.3 V ± 2 %.


Pinout (NEQTO Bridge Module Common Specs)

      


 PWM  : Supports PWM output  INT  : Supports edge interrupt input  WAKEUP  : Supports wakeup function
NODE1
neqto.js
Interface		NotesPin NamePin No.Pin NameNotesneqto.js
Interface
-GroundGND25 26GNDGround-
-RTC Power Supply InputVDD_RTC23 24GNDGround-
-Reset InputNRST21 22VDD_BATTPower Supply Input-
ADC(2)ADC Input 2ANALOG219 20VDD_BATTPower Supply Input-
ADC(1)ADC Input 1ANALOG117 18NODE1
IO6		GPIO
 PWM (Note 2)		GPIO(16)
GPIO(10)GPIO
 INT 		NODE1
IO0		15 16NODE1
IO5		GPIO
 PWM (Note 2)		GPIO(15)
UART(1)UART CTS InputNODE1
UART_CTS		13 14NODE1
PhotoMOS_IN2		Photo Coupler Input
(Note 4)
 INT   WAKEUP (Note 5)		GPIO(13)
UART RTS OutputNODE1
UART_RTS		11 12NODE1
PhotoMOS_IN1
UART Reception Data InputNODE1
UART_RX		9 10NODE1
RELAY_OUT2		Relay Output (Note 3)
 PWM (Note 1)		GPIO(11)
UART Transmission Data OutputNODE1
UART_TX		7 8NODE1
RELAY_OUT1
I2C(1)I2C Serial Clock OutputNODE1
I2C_SCL		5 6NODE1
I2C_SDA		I2C Serial Data I/OI2C(1)
SPI(1)SPI Data InputNODE1
SPI_MISO		3 4NODE1
SPI_SCK		SPI Serial Clock OutputSPI(1)
SPI Data OuputNODE1
SPI_MOSI		1 2NODE1
SPI_NCS		SPI Chip Select Output
NODE2
neqto.js
Interface		NotesPin NamePin No.Pin NameNotesneqto.js
Interface
-GroundGND25 26GNDGround-
-Power Supply InputVDD_BATT23 24NODE2
IO9		GPIO
 INT 		GPIO(29)
UserSWUser Switch Input
 WAKEUP 		USER_SW21 22NODE2
IO8		GPIOGPIO(28)
-System LED (Red) OutputSYSTEM_LED
RED		19 20NODE2
IO7		GPIOGPIO(27)
-System LED (Blue) OutputSYSTEM_LED
BLUE		17 18NODE2
IO6		GPIO
 INT 		GPIO(26)
GPIO(20)GPIO
 INT   WAKEUP 		NODE2
IO0		15 16NODE2
IO5		GPIO
 INT 		GPIO(25)
UART(2)UART CTS InputNODE2
UART_CTS		13 14NODE2
IO4		GPIO
 INT 		GPIO(24)
UART RTS OutputNODE2
UART_RTS		11 12NODE2
IO3		GPIO
 INT 		GPIO(23)
UART Reception Data InputNODE2
UART_RX		9 10NODE2
IO2		GPIO
 INT 		GPIO(22)
UART Transmission Data OutputNODE2
UART_TX		7 8NODE2
IO1		GPIO
 INT 		GPIO(21)
I2C(2)I2C Serial Clock OutputNODE2
I2C_SCL		5 6NODE2
I2C_SDA		I2C Serial Data I/OI2C(2)
SPI(2)SPI Data InputNODE2
SPI_MISO		3 4NODE2
SPI_SCK		SPI Serial Clock OutputSPI(2)
SPI Data OuputNODE2
SPI_MOSI		1 2NODE2
SPI_NCS		SPI Chip Select Output
  • All unused pins except NRST and USER_SW can be left open (not connected).
  • VDD_RTC(1.55 V to 3.6 V) can be left open when RTC power is not supplied from a battery independent of the system power supply (VDD_BATT).
  • Input terminals other than NRST (reset input), ANALOG1 (ADC input 1), ANALOG2 (ADC input 2) and NODE1_PhotoMOS_IN (photocoupler input) have a 5 V tolerant function. However, note that the digital output of the NEQTO Bridge Module is a 3.3 V output. (Excluding NODE1_RELAY_OUT (relay output))
  • For digital output voltage, refer to Interface Specifications.
  • Note 1) When using PWM output with GPIO11, the pulse cycle that can be specified is up to 100 ms.
  • Note 2) Since the PWM function of GPIO15 and GPIO16 uses the same signal generation source, two ports can generate phase-synchronized pulses. You can specify the pulse period and pulse width for each of the GPIO15 and GPIO16 ports by the neqto.js GPIO object, but the pulse period that is last set out of these two port settings will be applied. Although different pulse periods are not possible, the pulse width can be set for each port.
  • Note 3) GPIO11 can be set only GPIO operation mode 5(OUT/PUSH-PULL) or 9(OUT/PWM). The contact configuration is "1a (SPDT-NO)". For the connection of the relay, refer to the block diagram of each module.
  • Note 4) GPIO13 can be set only GPIO operation mode 2(IN). In addition, the signal polarity obtained from GPIO is opposite to that of the photo coupler input. For the connection of the photo coupler, refer to the block diagram of each module.
  • Note 5) Some NEQTO Bridge Module have restrictions on the wakeup function of GPIO13.
    Please check the NEQTO Bridge Module you are using.
    NEQTO Bridge ModuleRestrictions
    - LTE-1There are no restrictions.
    - Wi-Fi
    - LTE-M/NB    		If the last 8 digits of the serial ID is 00000001 to 00001000 :
    GPIO13 wakeup function is not supported.
    Instead, GPIO10 supports wakeup function.
    If the last 8 digits of the serial ID is 00001001 or later :
    There are no restrictions.


Interface Specifications (NEQTO Bridge Module Common Specs)

Electrical Characteristics

ItemSpecsNotes
Low Level Input VoltageMax 0.99 V@VDDIOx = 3.3 V (Note 1)UART / SPI / I2C / GPIO / NRST / USER_SW
High Level Input VoltageMin 2.31 V@VDDIOx = 3.3 V (Note 1)UART / SPI / I2C / GPIO / NRST / USER_SW
Low Level Output Voltage 1Max 0.45 V@IOL = 4 mA, VDDIOx = 3.3 V (Note 1)UART / SPI / GPIO
Low Level Output Voltage 2Max 0.4 V@IOL = 3 mA, VDDIOx = 3.3 V (Note 1)I2C
High Level Output 1Min 2.85 V@IOH = 4 mA, VDDIOx = 3.3 V (Note 1)UART / SPI / GPIO
High Level Output 2SDA, SCL Line is VDDIOx = 3.3 V (Note 1) 4.7 kΩ pull-upI2C
LED drive signal
SYSTEM_LED_BLUE
SYSTEM_LED_RED		High Leve Output
2.9 V@8 mA, VDDIOx = 3.3 V (Note 1)
2.0 V@20 mA, VDDIOx = 3.3 V (Note 1)		SYSTEM_LED_BLUE and SYSTEM_LED_RED signal are source driven.
  • Note 1) VDDIOx is supplied by the regulator (XC6215B332GR-G) on the NEQTO Bridge Module. The output deviation of the XC6215B332GR-G is 3.3 V ± 2 %.

Supported Baudrates

ItemSpecsNotes
NODE1 UART Baudrate2,400 bits/s - 921,600 bits/s        
NODE2 UART Baudrate2,400 bits/s - 921,600 bits/s
In case of User Console Mode, Baud rate is fixed 921,600 bits/s and uses NODE2 UART.
NODE1 SPI Baudrate0.15625M bits/s - 20M bits/s
NODE2 SPI Baudrate0.15625M bits/s - 20M bits/s
NODE1 I2C Baudrate100k bits/s, 400k bits/s
NODE2 I2C Baudrate100k bits/s, 400k bits/s

Pin Initial Values

FunctionPin NameInitial valueNotes
UARTNODE1_UART_TXDefault High
NODE1_UART_RXInternal PULL-UP
NODE1_UART_RTSDefault High
NODE1_UART_CTSInternal PULL-UP
UARTNODE2_UART_TXDefault High
NODE2_UART_RXInternal PULL-UP
NODE2_UART_RTSDefault High
NODE2_UART_CTSInternal PULL-UP
SPINODE1_SPI_MOSIInternal PULL-UP
NODE1_SPI_NCSInternal PULL-UP
NODE1_SPI_MISOInternal PULL-UP
NODE1_SPI_SCKInternal PULL-UP
SPINODE2_SPI_MOSIInternal PULL-UP
NODE2_SPI_NCSInternal PULL-UP
NODE2_SPI_MISOInternal PULL-UP
NODE2_SPI_SCKInternal PULL-UP
I2CNODE1_I2C_SCLExternal PULL-UP 4.7 kΩ
NODE1_I2C_SDAExternal PULL-UP 4.7 kΩ
I2CNODE2_I2C_SCLExternal PULL-UP 4.7 kΩ
NODE2_I2C_SDAExternal PULL-UP 4.7 kΩ
GPIONODE1_IO0GPIO operation mode: 0 (IN/PULL-UP)
NODE1_IO5GPIO operation mode: 0 (IN/PULL-UP)
NODE1_IO6GPIO operation mode: 0 (IN/PULL-UP)
NODE2_IO1GPIO operation mode: 0 (IN/PULL-UP)
NODE2_IO2GPIO operation mode: 0 (IN/PULL-UP)
NODE2_IO3GPIO operation mode: 0 (IN/PULL-UP)
NODE2_IO4GPIO operation mode: 0 (IN/PULL-UP)
NODE2_IO0GPIO operation mode: 0 (IN/PULL-UP)
NODE2_IO5GPIO operation mode: 0 (IN/PULL-UP)
NODE2_IO6GPIO operation mode: 0 (IN/PULL-UP)
NODE2_IO7GPIO operation mode: 0 (IN/PULL-UP)
NODE2_IO8GPIO operation mode: 0 (IN/PULL-UP)
NODE2_IO9GPIO operation mode: 0 (IN/PULL-UP)
Relay OutputNODE1_RELAY_OUT1GPIO operation mode: 5 (OUT)Low: RELAY OFF (Default)
High: RELAY ON
NODE1_RELAY_OUT2
Photo Coupler InputNODE1_PhotoMOS_IN1GPIO operation mode: 2 (IN)Low: Voltage between IN1-IN2 pins is applied
High: Voltage between IN1-IN2 pins is not applied (Default)
NODE1_PhotoMOS_IN2
Reset InputNRSTInternal PULL-UPLow: Reset
High: Normal (Default)
* To reset, hold Low for 1 ms or more.
User Switch InputUSER_SWInternal PULL-DOWNLow: OFF (Default)
High: ON
System LED OutputSYSTEM_LED_BLUE-Low: OFF
High: ON
SYSTEM_LED_RED-Low: OFF
High: ON


About User Console Mode

The User Console Mode provides a command console interface using the UART interface.
It is available for inputting various settings commands and displaying real-time logs.

When the power is turned on while the USER_SW signal is High, the User Console mode is activated.

Note that it is required to configure the NEQTO Bridge Module communication settings from the User Console mode. Therefore, it will be necessary to prepare a method to control the logic of USER_SW.


About QR Code

A QR code label is attached to the NEQTO Bridge Module.
The location of the QR code label varies depending on the NEQTO Bridge Module type.

      


Shown on the QR code label are the QR code and the serial ID (16 digits).
The QR code contains the ',' separated serial ID (16 digits) and the product key (16 alphanumeric characters).

  QR code data (serial ID,product key)
 0123456789012345,ABCDEFGHJK123456

The serial ID and product key are required to register the device on the NEQTO Console.


Updated: 2021-05-11
← 23. nqWiFi02. NEQTO Bridge Wi-Fi Module →