JWBR2S-5V Module Datasheet

Product overview

Developed by Tuya, JWBR2S-5V is a Wi-Fi module suitable for serial communication of the 5V TTL. It consists of a WBR1 module, which supports both the Wi-Fi and Bluetooth communication protocols and a level conversion circuit. It is 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

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.

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	-	0.825	V
VIH	Voltage Input High	2.475	-	3.3	V
VOL	Voltage Output Low	-	-	0.33	V
VOH	Voltage Output High	2.64	-	3.3	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	+17.5dBm	269.1	299.9	mA
Transmit	11g	54Mbps	+14.5dBm	166.8	233.1	mA
Transmit	11n BW20	MCS7	+13.5dBm	164.2	226.5	mA

RX power consumption

Working status	Mode	Receive	Average value	Peak value (typical value)	Unit
Receive	CPU Active	11Mbps	65.7	73.7	mA
Receive	CPU Active	54Mbps	65.2	73	mA
Receive	CPU Active	MCS7	66.2	73.8	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	60	291.5	mA
Idle state of network connection	The module is in idle state of network connection	60.3	239.5	mA
Operation state of network connection	The module is connecting to the network	60.2	287.5	mA
Disconnected state	The module is disconnected	61	288	mA

Note: The peak lasts about 5μs. 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.

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.

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 on, the MCU should not pull the level of the TX/RX pin to be high.

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.

Specifications of terminal

The terminal has 4 pins with a spacing of 2.0 mm between each other. Detailed parameters are as follows:

Storage conditions

• Temperature and humidity control: It should be stored in an environment where temperature and humidity can be controlled. The ideal storage temperature is generally between 0-35°C, with humidity kept below 60%. Excessively high temperatures and humidity may lead to oxidation or corrosion of metal parts, while excessively low temperatures may cause materials to become brittle and prone to breaking.

• Avoid direct sunlight: Direct exposure to sunlight may cause aging or degradation of the materials.

• Waterproof and dustproof: The storage environment should remain dry to prevent moisture ingress, as moisture can lead to internal circuit short circuits or damage. Additionally, it is important to protect the module from dust and other solid impurities, as this may affect the product’s contact performance and stability.

• Avoid corrosive environments: The storage environment should avoid the presence of corrosive substances, as these can corrode the metal parts of the product and reduce its lifespan.

Appendix：Statement

FCC Caution: Any changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate this device.

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

Note: This device has been tested and found to comply with the limits for a Class B digital device, according to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This device generates, uses, and can radiate radio frequency energy and, if not installed and used following the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation.

If this device does cause harmful interference to radio or television reception, which can be determined by turning the device off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.
• Increase the separation between the device and receiver.
• Connect the device into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.

Radiation Exposure Statement

This device complies with FCC radiation exposure limits set forth for an uncontrolled rolled environment. This device should be installed and operated with a minimum distance of 20cm between the radiator and your body.

Important Note

This radio module must not be installed to co-locate and operating simultaneously with other radios in the host system except following FCC multi-transmitter product procedures. Additional testing and device authorization may be required to operate simultaneously with other radios.

The availability of some specific channels and/or operational frequency bands are country dependent and are firmware programmed at the factory to match the intended destination. The firmware setting is not accessible by the end-user.

The host product manufacturer is responsible for compliance with any other FCC rules that apply to the host not covered by the modular transmitter grant of certification. The final host product still requires Part 15 Subpart B compliance testing with the modular transmitter installed.

The end-user manual shall include all required regulatory information/warnings as shown in this manual, including “This product must be installed and operated with a minimum distance of 20 cm between the radiator and user body”.

This device has got an FCC ID: 2ANDL-JWBR2S-5V. The end product must be labeled in a visible area with the following: “Contains Transmitter Module FCC ID: 2ANDL-JWBR2S-5V”.

This device is intended only for OEM integrators under the following conditions:

The antenna must be installed such that 20cm is maintained between the antenna and users, and the transmitter module may not be co-located with any other transmitter or antenna.

As long as the 2 conditions above are met, further transmitter tests will not be required. However, the OEM integrator is still responsible for testing their end-product for any additional compliance requirements required with this module installed.

Declaration of Conformity European Notice

Hereby, Hangzhou Tuya Information Technology Co., Ltd declares that this module product is in compliance with essential requirements and other relevant provisions of Directive 2014/53/EU,2011/65/EU. A copy of the Declaration of conformity can be found at https://www.tuya.com.

This product must not be disposed of as normal household waste, in accordance with the EU directive for waste electrical and electronic equipment (WEEE-2012/19/EU). Instead, it should be disposed of by returning it to the point of sale, or to a municipal recycling collection point.

The device could be used with a separation distance of 20cm to the human body.