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JWBR2S-5V Module Datasheet

Last Updated on : 2021-09-25 01:23:59download

Product overview

Developed by Tuya, JWBR2S-5V is a Wi-Fi module suitable for serial communication of the 5 V TTL. It consists of a WBR1 module, which supports both the Wi-Fi and Bluetooth communication protocols and a level conversion circuit. It’s further embedded with the Wi-Fi/Bluetooth network protocol stack and Tuya serial communication protocol.
JWBR2S-5V is an RTOS platform. On the basis of the serial communication manner, you can develop embedded products as required.

Features

  • Embedded low-power KM4-MCU, which can also function as an application processor
    • The maximum clock rate: 100 MHz
  • Operating voltage: 5V
  • Peripheral: 1 UART
  • Wi-Fi connectivity
    • 802.11 b/g/n20/
    • Channels 1 to 14@2.4 GHz
    • Support Bluetooth Low Energy 4.2
    • Support WPA/WPA2 security mode
    • Up to +18dBm output power in 802.11b mode
    • Support SmartConfig for Android and iOS devices
    • Onboard PCB antenna
    • Operating temperature: -20℃ to 85℃

Applications

  • Intelligent building
  • Smart household and home appliances
  • Smart socket and light
  • Industrial wireless control
  • Baby monitor
  • Network camera
  • Intelligent bus

Change history

Update date Updated content Version after update
February 26, 2020 This is the first release. V2.0.0

Module interfaces

Dimensions and footprint

The electrical interface of JWBR2S-5V is the PH-4AW connector with a spacing of 2.0 mm.
As shown in the following figure, the dimensions of JWBR2S-5V are 42.6±0.35 mm (W)×31±0.35 mm (L) ×9.1±0.15 mm (H). The thickness of the PCB is 1.2±0.1 mm.
JWBR2S-5V Module Datasheet

JWBR2S-5V Module Datasheet

Pin definition

Pin number Symbol Type Function
1 RX I/O UART0_RXD, receiving interface the module, input the level of 5V TTL
2 TX I/O UART0_TXD, transmitting interface of the module, output the level of 5V TTL
3 GND P Power supply reference ground
4 VCC P Power supply pin (5V)

Note: P indicates power supply pins and I/O indicates input/output pins.

Definitions on test pins

Pin number Symbol Type Function
1 3.3V P Power supply pin inside the module (3.3V)
2 GND P Power supply reference ground
3 Log_Tx I/O UART_Log_TXD (used to display the internal information of the module)
4 Log_Rx I/O UART_Log_RXD (used to display the internal information of the module)
5 RXD I/O Interface for programming firmware of the module
6 TXD I/O Interface for programming firmware of the module
7 A_0 I/O GPIOA_0, interface for programming firmware of the module When powered on, the pin needs to be pulled to 3.3V.
8 RST I/O Hardware reset pin

Note: P indicates power supply pins, I/O indicates input/output pins and test points are prohibited.

Electrical parameters

Absolute electrical parameters

Parameter Description Minimum value Maximum value Unit
Ts Storage temperature -40 105
VBAT Supply voltage -0.3 5.5 V
ESD voltage (human body model) TAMB-25℃ - 2 KV
ESD voltage (machine model) TAMB-25℃ - 0.5 KV

Normal working conditions

Parameter Description Minimum value Typical value Maximum value Unit
Ta Working temperature -20 - 85
VBAT Supply voltage 4.5 5 5.5 V
VIL Voltage Input Low -0.3 - VCC*0.25 V
VIH Voltage Input High VCC*0.75 - VCC V
VOL Voltage Output Low - - VCC*0.1 V
VOH Voltage Output High VCC*0.8 - VCC V
Imax Drive current - - 16 mA
Cpad Input pin capacitance - 2 - pF

TX power consumption

Working status Mode Rate Transmit power Average value Peak value (typical value) Unit
Transmit 11b 11Mbps +17dBm 217 268 mA
Transmit 11b 11Mbps +18dBm 225 280 mA
Transmit 11g 54Mbps +15dBm 159 188 mA
Transmit 11g 54Mbps +17.5dBm 177 213 mA
Transmit 11n BW20 MCS7 +13dBm 145 167 mA
Transmit 11n BW20 MCS7 +16.5dBm 165 193 mA

RX power consumption

Working status Mode Receive Average value Peak value (typical value) Unit
Receive CPU Sleep 11Mbps 63 75 mA
Receive CPU Active 54Mbps 65 78 mA
Receive CPU Active MCS7 65 78 mA

Power consumption in working mode

Working mode Working status, Ta = 25°C Average value Peak value (typical value) Unit
EZ The module is in fast connection state 78 295 mA
Idle state of network connection The module is in idle state of network connection 66 282 mA
Operation state of network connection The module is connecting to the network 63 314 mA
Disconnected state The module is disconnected 61 288 mA

Note: The peak lasts about 5us. The above parameters may vary with different firmware functions.

RF parameters

Basic RF features

Parameter Description
Working frequency 2.400 to 2.484 GHz
Wi-Fi standard IEEE 802.11 b/g/n (channels 1 to 14)
Data transmission rate 11b: 1, 2, 5.5, and 11 (Mbps); 11g: 6, 9, 12, 18, 24, 36, 48, and 54 (Mbps); 11n: HT20 MCS 0 to 7
Antenna type PCB antenna

TX performance

TX performance

Parameter Minimum value Typical value Maximum value Unit
Average output power, 802.11b CCK Mode 11M - 17.5 - dBm
Average output power, 802.11g OFDM Mode 54M - 14.5 - dBm
Average output power, 802.11n OFDM Mode MCS7 - 13.5 - dBm
Frequency error -20 - 20 ppm

RX performance

RX sensitivity

Parameter Minimum value Typical value Maximum value Unit
PER<8%, RX sensitivity, 802.11b DSSS Mode 1M - -91 - dBm
PER<10%, RX sensitivity, 802.11g OFDM Mode 54M - -75 - dBm
PER<10%, RX sensitivity, 802.11n OFDM Mode MCS7 - -72 - dBm

Antenna information

Antenna type

JWBR2S-5V supports two types of antennas: Onboard PCB antenna and external antenna. By default, the onboard PCB antenna is preferred.

Antenna interference reduction

To ensure optimal Wi-Fi performance when the Wi-Fi module uses an onboard PCB antenna, it is recommended that the antenna be at least 15 mm away from other metal parts.
To prevent adverse impact on the antenna radiation performance, avoid copper or traces within the antenna area of the PCB.
JWBR2S-5V Module Datasheet

JWBR2S-5V Module Datasheet

Specifications of antenna connector

There is no antenna connector for this module currently.

Power-on sequence

The chip has requirements on the power-on sequence. It is recommended that the voltage should rise from 0 to 3.3V within 40mS.

JWBR2S-5V Module Datasheet

Symbol Parameter Minimum value Typical value Maximum value Unit
TPRDY 3.3V ready time 0.6 40 mS
CHIP_EN CHIP_EN ready time 0.6 40 mS

The high-level establishment time t2 for the TX and RX pins of the adapter board should be less than the high-level establishment time t1 for the power supply. Before the power supply pin of the adapter board is powered, the MCU should not pull the level of the TX/RX pin to be high.
JWBR2S-5V Module Datasheet

Packaging information and production instructions

Mechanical dimensions

As shown in the following figure, the dimensions of JWBR2S-5V are 42.6±0.35 mm (W)×31±0.35 mm (L) ×9.1±0.15 mm (H). The thickness of the PCB is 1.2±0.1 mm.
JWBR2S-5V Module Datasheet

JWBR2S-5V Module Datasheet
Specifications of terminal
The terminal has 4 pins with a spacing of 2.0 mm between each other. Detailed parameters are as follows:
JWBR2S-5V Module Datasheet

Production instructions

Storage conditions for a delivered module are as follows:

  • The moisture-proof bag must be placed in an environment where the temperature is below 30°C and the RH is lower than 85%.
  • The shelf life of a dry-packaged product is 6 months from the date when the product is packaged and sealed.

    Caution:

    • In the production process, all operators must wear electrostatic rings.
    • During operation, strictly prevent the module from getting wet or dirty.

Recommended oven temperature curve

We mount the PCB with the SMT according to the following temperature curve. The peak temperature is 245°C.

JWBR2S-5V Module Datasheet

Storage conditions

JWBR2S-5V Module Datasheet