Last Updated on : 2022-08-08 10:37:39download
The WR1 is a low-power embedded Wi-Fi module developed by Hangzhou Tuya Information Technology Co., Ltd. The module consists of a highly integrated RTL8710BN chip and external flash memory. It comes with a built-in Wi-Fi network protocol and a large number of library functions.
The WR1 also includes low power ARM CM4F, WLAN MAC, 1T1R WLAN, a maximum frequency of 125MHz, built-in 256K SRAM, 1Mbyte flash, and a wealth of peripheral resources.
The WR1 is an RTOS platform that gathers all Wi-Fi MAC and TCP/IP libraries into one place. It enables users to build on the product and develop embedded Wi-Fi products that suit their individual needs.
The WR1 has 2 rows of pins (2x9) with a 1.5mm gap.
WR1 dimensions: 18 mm (W) x 23.5 mm (L) x 3.3 mm (H); package as shown in the following figure:
WR1 dimensional drawing:
Conventional pins are defined as shown in the following table:
WR1 pins description:
|1||VCC||P||UART0_TXD power conversion (5V or 3.3V)|
|2||UART0_TXD||I/O||UART0_TXD (user serial port)|
|3||UART0_RXD||I/O||UART0_RXD (user serial port)|
|4||VD33||P||Module power supply pin (3.3V)|
|8||LOG_TXD||I/O||UART_Log_TXD (for printing internal information of the module)|
|9||GPIOA_0||I/O||GPIOA_0, can not be HIGH at the moment it is powered on, but can be after powering onConfiguration|
|11||LOG_RXD||I/O||UART_Log_RXD (for printing internal information of the module)|
|16||CHIP_EN||I/O||The pin function is disabled by firmware, user can choose not to connect.|
|17||ADC||AI||ADC port, maximum input voltage 5V|
Pindicates the power pin, I/O indicates the input/output pin, and AI indicates the analog input pin.
|Parameters||Description||Minimum value||Maximum value||Unit|
|Electrostatic discharge voltage (human-body model)||TAMB-25℃||-||2||KV|
|Electrostatic discharge voltage (machine model)||TAMB-25℃||-||0.5||KV|
Normal operating conditions:
|VIL||IO low input||-0.3||-||VDD*0.25||V|
|VIH||IO high input||VDD*0.75||-||3.6||V|
|VOL||IO low output||-||-||VDD*0.1||V|
|VOH||IO high output||VDD*0.8||-||VDD||V|
|Imax||IO drive current||-||-||16||mA|
|Cpad||Input pin capacitance||-||2||-||pF|
Power consumption during continuous TX:
Power consumption during continuous RX:
Module operating current:
|Operation Mode||Operating condition, TA=25℃||Typ||Peak*||Unit|
|Quick configuration||Module in the quick net-pairing state, Wi-Fi indicator blinking||115||130||mA|
|Network connection idle||Module connected to the network, Wi-Fi indicator constantly on||50||110||mA|
|Network connection active||Module connected to the network, Wi-Fi indicator constantly on||120||265||mA|
|Disconnected||Module not connected to the network, Wi-Fi indicator always off||35||90||mA|
Note: The peak period is approximately 5μs.
The parameters above may vary according to the firmware.
Basic RF characteristics:
|Frequency range||2.400 to 2.4835GHz|
|Wi-Fi standard||IEEE 802.11b/g/n (channels 1-14)|
|Data transfer rate||
|Antenna type||PCB antenna (default)U.FL RF connector external antenna (optional)|
Continuous TX Power:
|Parameter||Minimum value||Typical value||Maximum value||Unit|
|RF average output power, 802.11b CCK Mode||11M||-||17.5||-||dBm|
|RF average output power, 802.11g OFDM Mode||54M||-||14.5||-||dBm|
|RF average output power, 802.11n OFDM Mode||MCS7||-||13.5||-||dBm|
|PER<8%, RX sensitivity, 802.11b CCK Mode||11M||-||-91||-||dBm|
|PER<10%, RX sensitivity, 802.11g OFDM Mode||54M||-||-75||-||dBm|
|PER<10%, RX sensitivity, 802.11n OFDM Mode||MCS7||-||-72||-||dBm|
There are two antenna access modes: PCB onboard antenna and external antenna. The default method is PCB onboard antenna.
To optimize the performance of the Wi-Fi module in combination with the PCB onboard antenna, it is recommended to keep the antenna at least 15mm from other metal parts.
U.FL RF connector parameters are shown in the figure below:
Note: The PCB frame tolerance is ±0.35mm and the PCB thickness tolerance is ±0.1mm.
The Tuya SMT module should be mounted by the SMT device. After being unpacked, it should be soldered within 24 hours. Otherwise, it should be put into the drying cupboard where the RH is not greater than 10%; or it needs to be packaged under vacuum again and the exposure time needs to be recorded (the total exposure time cannot exceed 168 hours).
Storage conditions for a delivered module:
The moisture-proof bag must be placed in an environment where the temperature is below 40°C and the relative humidity is lower than 90%.
The shelf life of a dry-packaged product is 12 months from the date when the product is packaged and sealed.
There is a humidity indicator card (HIC) in the packaging bag.
The module needs to be baked in the following cases:
In the whole production process, take electrostatic discharge (ESD) protective measures.
To guarantee the passing rate, it is recommended that you use the SPI and AOI to monitor the quality of solder paste printing and mounting.
Set oven temperatures according to the following temperature curve of reflow soldering. The peak temperature is 245°C.
A: Temperature axis
B: Time axis
C: Liquidus temperature: 217 to 220°C
D: Ramp-up slope: 1 to 3°C/s
E: Duration of constant temperature: 60 to 120s; the range of constant temperature: 150 to 200°C
F: Duration above the liquidus: 50 to 70s
G: Peak temperature: 235 to 245°C
H: Ramp-down slope: 1 to 4°C/s
Note: The above curve is just an example of the solder paste SAC305. For more details about other solder pastes, please refer to Recommended oven temperature curve in the solder paste specifications.
|Product Number||MOQ (pcs)||Shipping packaging method||Number of modules per reel (pcs)||Number of reels per carton (reel)|
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:
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.
This radio module must not be installed to co-locate and operate 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-WR1. The end product must be labeled in a visible area with the following: “Contains Transmitter Module FCC ID: 2ANDL-WR1”.
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.
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