TYAUX_J Module Datasheet

TYAUX_J is a low power module with a built-in Wi-Fi connectivity solution designed by Hangzhou Tuya Information Technology Co., Ltd. for serial communication between 12V level and 3.3V level. It consists of a highly integrated wireless RF chip RTL8710BN and an external flash chip, with a built-in Wi-Fi network protocol stack and rich library functions.

Product overview

TYAUX_J includes ARM CM4F, WLAN MAC, 1T1R WLAN, maximum frequency of up to 125MHz, 256K SRAM, 2MB flash memory, and various peripheral resources.

TYAUX_J is an RTOS platform, embedded with all the Wi-Fi MAC and TCP/IP protocol function examples, so users can customize their Wi-Fi products by using these software examples.

Features

• Built-in low power 32-bit CPU functioning as an application processor
• Basic frequency: 125 MHz
• Working voltage: 12V
• Peripherals: one UART
• Wi-Fi connectivity
  • 802.11b/g/n20/n40
  • Channels 1 to 14 at 2.4 GHz
  • WPA/WPA2 security mode
  • +18 dBm output power in 802.11b mode
  • SmartConfig function (for Android and iOS devices)
  • PCB On board antenna
  • Working temperature: –20°C to +85°C

Applications

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

Module interfaces

Dimensions and footprint

TYAUX_J dimensions: 19.5 mm±0.35mm(W) × 35.5±0.35mm(L) × 3.5±0.15mm (H), and the PCB thickness is 1.0mm±0.1 mm.

Interface pin definition

Pin No.	Symbol	I/O Type	Function
1	GND	P	Power supply reference ground pin
2	TXD	I/O	UART0_TXD (user serial port)
3	RXD	I/O	UART0_RXD (user serial port)
4	VDD	P	External power input (12 V)

Electrical parameters

Absolute electrical parameters

Parameter	Description	Minimum Value	Maximum Value	Unit
Ts	Storage temperature	–40	125	°C
VCC	Power supply voltage	–0.3	18	V
Electrostatic discharge voltage (human body model)	Tamb = 25°C	N/A	2	kV
Electrostatic discharge voltage (machine model)	Tamb = 25°C	N/A	0.5	kV

Electrical conditions

Parameter	Description	Minimum Value	Typical Value	Maximum Value	Unit
Ta	Working temperature	–20	N/A	85	°C
VBAT	Power supply voltage	4.5	12	18	V
VIL	I/O low-level input	–0.3	N/A	0.8	V
VIH	I/O high-level input	2.47	N/A	3.6	V
VOL	I/O low-level output	N/A	N/A	0.34	V
VoH	I/O high-level output	2.64	N/A	3.4	V
Imax	I/O drive current	N/A	N/A	16	mA
Cpad	Input pin capacitance	N/A	2	N/A	pF

Continuous TX power dissipation

Working Status	Mode	Rate	TX power	Average value	Peak (Typical) value	Unit
TX	11b	11Mbps	+17dBm	287	-	mA
TX	11b	11Mbps	+18dBm	295	-	mA
TX	11g	54Mbps	+15dBm	255	-	mA
TX	11g	54Mbps	+17.5dBm	267	-	mA
TX	11n BW20	MCS7	+13dBm	244	-	mA
TX	11n BW20	MCS7	+16.5dBm	257	-	mA
TX	11n BW40	MCS7	+13dBm	220	-	mA
TX	11n BW40	MCS7	+16.5dBm	230	-	mA

Continuous RX power dissipation

Symbol	Mode	Average value	Unit
Receive	CPU Sleep	90	mA
Receive	CPU Active	120	mA

Power consumption in working mode

Working Mode	Working Status (Ta = 25°C)	Average Value	Peak Value*(Typical Value)	Unit
Quick pairing	Module in the quick pairing state	115	125	mA
Network connection idle	Module connected to the network and idle	60	209	mA
Network connection active	Module connected to the network and working	118	198	mA
Disconnected	Module not connected to the network	34	192	mA

RF features

Basic RF features

Parameter	Description
Frequency band	2.412 GHz to 2.4835 GHz
Wi-Fi standard	IEEE 802.11b/g/n (channels 1 to 14)
Data transmission rate	11b：1, 2, 5.5, 11 (Mbps) 11g：6, 9, 12, 18, 24, 36, 48, 54(Mbps) 11n：HT20 MCS0~7, HT40 MCS0~7
Antenna type	PCB onboard antenna

TX performance

Parameter	Minimum Value	Typical Value	Maximum Value	Unit
Average RF output power, 802.11b CCK mode 11 Mbit/s	N/A	17.5	N/A	dBm
Average RF output power, 802.11g OFDM mode 54 Mbit/s	N/A	14.5	N/A	dBm
Average RF output power, 802.11n OFDM mode MCS7	N/A	13.5	N/A	dBm
Frequency error	–20	N/A	+20	ppm

RX performance

Parameter	Minimum value	Typical value	Maximum value	Unit
PER < 8%, RX sensitivity, 802.11b DSSS mode, 1 Mbit/s	N/A	–91	N/A	dBm
PER < 10%, RX sensitivity, 802.11g OFDM mode, 54 Mbit/s	N/A	–75	N/A	dBm
PER < 10%, RX sensitivity, 802.11n OFDM mode, MCS7	N/A	–72	N/A	dBm

Antenna

Antenna type

TYAUX_J supports PCB onboard antenna and external antenna. By default, the module uses an onboard PCB antenna.

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 an adverse impact on the antenna radiation performance, avoid copper or traces along the antenna area on the PCB.

Antenna connector

There is no antenna connector in this module.

Packaging and production instructions

Mechanical dimensions

Production instructions

The storage for the delivered module should meet the following conditions:

1. The anti-moisture bag should be kept in an environment with temperature < 30℃ and relative humidity < 85%.
2. The expiration date is 6 months since the dry packaging products were sealed.

Recommended oven temperature curve

Perform SMT placement based on the following reflow oven temperature curve. The highest temperature is 245°C.

Storage conditions

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 operate simultaneously with other radios in the host system except by 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 to 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-TYAUX_J. The end product must be labeled in a visible area with the following: “Contains Transmitter Module FCC ID: 2ANDL-TYAUX_J”.

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 from the human body.