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WR3N Datasheet

1 Product Overview

WR3N is a low-power embedded Wi-Fi module that Tuya has developed. It consists of a

highly integrated RF chip (RTL8710BN) and an external flash chip, with an embedded

Wi-Fi network protocol stack and robust library functions. WR3N also contains a

low-power Arm Cortex-M4F microcontroller unit (MCU), WLAN MAC protocol, 1T1R

WLAN module, 256 KB static random-access memory (SRAM), 2 MB flash memory, and

extensive peripherals. WR3N also contains N32S032 security chip, embeded with

hardware algorithm co-processor to provide excellent performance DES / 3DES, AES,

SHA, RSA, ECC and national commercial passwords SM1 / SM2 / SM3 / SM4 and other

security algorithm modules. WR3N is an RTOS platform that integrates all function

libraries of the Wi-Fi MAC and TCP/IP protocols. You can develop embedded Wi-Fi

products as required.

1.1 Features

 Embedded low-power 32-bit CPU, which can also function as an application

processor

 Clock rate: 125 MHz

 Working voltage: 3.0 V to 3.6 V

 Peripherals: 7×GPIOs, 2×UART, 1×ADC

 Wi-Fi connectivity

 802.11b/g/n20/n40

 Channels 1 to 14 at 2.4 GHz

 WPA and WPA2 security modes

 Up to +20 dBm output power in 802.11b mode

 STA, AP, and STA+AP working modes

Product

Manual

Tuya

WR3N

Fi Module

Version: 1.0.1

Date: 2020-03-19 No.: 0000000001

Global Intelligent Platform

Product

Manual

Summary of content (19 pages)

PAGE 1
Product Manual Global Intelligent Platform WR3N Datasheet Tuya WR3N Wi-Fi Module Product Manual Version: 1.0.1 Date: 2020-03-19 No.: 0000000001 1 Product Overview WR3N is a low-power embedded Wi-Fi module that Tuya has developed. It consists of a highly integrated RF chip (RTL8710BN) and an external flash chip, with an embedded Wi-Fi network protocol stack and robust library functions.
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WR3N Datasheet  Smart and AP network configuration modes for Android and iOS devices  Onboard PCB antenna  Working temperature: –20°C to +85°C 1.
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WR3N Datasheet Change History No. Date Change Description Version After Change 1 2019-12-28 This is the first release. 1.0.0 2 2020-03-19 Update RF Current Consumption 1.0.
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WR3N Datasheet Contents 1 Product Overview ......................................................................................................... 1 1.1 Features ............................................................................................................ 1 1.2 Applications....................................................................................................... 2 Change History ..............................................................................................
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WR3N Datasheet 2 Module Interfaces 2.1 Dimensions and Footprint WR3N has two rows of pins (2 x 8 ) with a 2 mm pin spacing. The WR3N dimensions (W x D x H) are 16±0.35 mm x 24±0.35 mm x 2.9±0.15 mm. The PCB thickness is 0.8±0.1 mm. The shield cover height is 2.0±0.05 mm. 2.2 Interface Pin Definition Table 2-1 WR3N interface pins Pin No.
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WR3N Datasheet Pin No. Symbol I/O Type Function 4 GPIOA_29 I/O UART_Log_RXD, which is used for printing the module internal information and can be configured as a common GPIO (The pin has been pulled up and cannot be set to be triggered at a high level.
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WR3N Datasheet 3 Electrical Parameters 3.1 Absolute Electrical Parameters Table 3-1 Absolute electrical parameters Parameter Description Minimum Value Maximum Value Unit Ts Storage temperature –40 105 °C VDD Power supply voltage –0.3 3.6 V Static electricity voltage (human body model) Tamb = 25°C N/A 2 kV Static electricity voltage (machine model) Tamb = 25°C N/A 0.5 kV 3.
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WR3N Datasheet 3.3 RF Current Consumption Table 3-3 Power consumption during constant transmission and receiving Parameter Working Status Mode TX Power/ Receiving Rate Typical Value Unit 802.11b 11 Mbit/s +17.5 dBm 350 mA 802.11g 54 Mbit/s +14.5 dBm 320 mA 802.11n MCS0 +13.5 dBm 350 mA 802.11n MCS7 +13.5 dBm 300 mA 11 Mbit/s Constant receiving 137 mA 54 Mbit/s Constant receiving 137 mA MCS7 Constant receiving 137 mA Typical Value Peak Value* Unit TX 802.
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WR3N Datasheet Working Mode Network disconnect Working Status (Ta = 25°C) The internet is disconnected, and the Wi-Fi indicator not blink.
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WR3N Datasheet 4 RF Features 4.1 Basic RF Features Table 4-1 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) 802.11b: 1, 2, 5.5, or 11 (Mbit/s) Data transmission rate 802.11g: 6, 9, 12, 18, 24, 36, 48, or 54 (Mbit/s) 802.11n: HT20 MCS0 to MCS7 802.11n: HT40 MCS0 to MCS7 Antenna type Onbiard PCB antenna 4.
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WR3N Datasheet 4.3 RX Performance Table 4-3 RX sensitivity Parameter Minimum Value Typical Value Maximum Value Unit PER < 8%, 802.11b CCK mode 1 Mbit/s N/A –91 N/A dBm PER < 10%, 802.11g OFDM mode 54 Mbit/s N/A –75 N/A dBm PER < 10%, 802.11n OFDM mode MCS7 N/A –72 N/A dBm 5 Antenna Information 5.1 Antenna Type WR3N uses an onboard PCB antenna(default way). 5.
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WR3N Datasheet 6 Packaging Information and Production Instructions 6.
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WR3N Datasheet 6.
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WR3N Datasheet 6.3 Production Instructions 1. Use an SMT placement machine to mount the stamp hole module that Tuya produces onto the PCB within 24 hours after the module is unpacked and the firmware is burned. If not, vacuum pack the module again. Bake the module before mounting it onto the PCB. (1) SMT placement equipment i. Reflow soldering machine ii. Automated optical inspection (AOI) equipment iii. Nozzle with a 6 mm to 8 mm diameter (2) Baking equipment i. Cabinet oven ii.
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WR3N Datasheet (3) If the 30% and 40% circles are pink, bake the module for 6 consecutive hours. (4) If the 30%, 40%, and 50% circles are pink, bake the module for 12 consecutive hours. 4. Baking settings: (1) Baking temperature: 125±5°C (2) Alarm temperature: 130°C (3) SMT placement ready temperature after natural cooling: < 36°C (4) Number of drying times: 1 (5) Rebaking condition: The module is not soldered within 12 hours after baking. 5.
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WR3N Datasheet 16
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WR3N Datasheet 6.5 Storage Conditions Appendix: Statement Federal Communications Commission (FCC) Declaration of Conformity FCC Caution: Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate this equipment. This device complies with Part 15 of the FCC Rules.
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WR3N Datasheet equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation.
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WR3N Datasheet 2) The transmitter module may not be co-located with any other transmitter or antenna. As long as 2 conditions above are met, further transmitter test 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.