TYJW1.1 Module Datasheet

Last Updated on : 2024-06-14 03:14:29download

Product overview

Developed by Tuya, TYJW1.1 is a Wi-Fi module that is suitable for serial communication of the 3.3 V TTL. It consists of a highly integrated wireless RF chip (ESP8266EX) and an external flash chip, with an embedded Wi-Fi network protocol stack and rich library functions. TYJW1.1 includes a low-power 32-bit CPU, 2-MB flash memory, and 36-KB SRAM.
TYJW1.1 is an RTOS platform that integrates all function libraries of the Wi-Fi MAC and TCP/IP. On the basis of the serial communication manner, you can develop embedded Wi-Fi products as required.


  • Embedded with the low-power 32-bit CPU, which can also function as an application processor
    • The clock rate supports 80 MHz and 160 MHz
  • Operating voltage: 3.3V
  • Peripheral: 1 UART
  • Wi-Fi connectivity
    • 802.11 b/g/n20
    • Channels 1 to 14@2.4 GHz
    • Support WPA/WPA2 security mode
    • Up to +18dBm output power in 802.11b mode
    • Support STA/AP/STA+AP working mode
    • Support SmartConfig for Android and iOS devices
    • Onboard PCB antenna
    • Operating temperature: -20℃ to 85℃


  • 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
December 02, 2016 This is the first release. V1.0.0
January 23, 2018 Added the description of of the PCB dimensional tolerance V1.0.1
June 17, 2020 Adjusted the format V2.0.0

Module interfaces

Dimensions and footprint

The electrical interface of TYJW1.1 is the PHS connector with a spacing of 2.54 mm.

As shown in the following figure, the dimensions of TYJW1.1 are 57.5±0.35 mm (W)×31.4±0.35 mm (L) ×7.2±0.15 mm (H). The thickness of the PCB is 1.2±0.1 mm.
TYJW1.1  Module Datasheet

Pin definition

Pin number Symbol Type Function
1 GND P Power supply reference ground
2 TX I/O Transmitting interface of the module, output the level of 3.3V TTL
3 RX I/O Receiving interface of the module, input the level of 3.3V TTL
4 VCC P Power supply pin (3.3V)

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

Definitions on test pins

Pin number Symbol Type Function
5 3.3V P Power supply pin inside the module (3.3V)
6 IO0 I/O The pin for enabling/disabling burning of firmware of the module, whose level needs to be pulled down to the low level during firmware burning.
7 RST I/O Hardware reset pin
8 TXD0 I/O Interface for programming firmware of the module
9 RXD0 I/O Interface for programming firmware of the module
10 TXD1 I/O An interface for displaying information of the module
11 GND P Power supply reference ground

Note: P indicates power supply pins, and I/O indicates input or output pins. When the pin IO0 is pulled up, the module runs normally. When the pin IO0 is at low level, the module is in firmware programming state.
The RST is only a hardware reset pin and cannot be used for clearing information about Wi-Fi network configuration. The 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 3.3 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 Power supply voltage 3.0 3.3 3.6 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 - - 5 mA

TX power consumption

Working status Mode Rate Transmit power Average value Peak value (typical value) Unit
Transmit 11b 11Mbps +17dBm 260 268 mA
Transmit 11g 54Mbps +15dBm 100 188 mA
Transmit 11n BW20 MCS7 +13dBm 100 167 mA

RX power consumption

Working status Mode Receive Average value Peak value (typical value) Unit
Receive CPU Sleep 11Mbps 70 80 mA
Receive CPU Active 54Mbps 70 78 mA
Receive CPU Active MCS7 70 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 90 445 mA
Hotspot The module is in hotspot mode 101 451 mA
Connected and operating The module is connected to the network and operating normally 58.5 411 mA
Disconnected state The module is disconnected 156 430 mA

Note: The peak lasts about 5 to 10ms. 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

TYJW1.1 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.
TYJW1.1  Module Datasheet
TYJW1.1  Module Datasheet

Specifications of antenna connector

There is no antenna connector for this module currently.

Packaging information and production instructions

Mechanical dimensions

TYJW1.1  Module Datasheet

Specifications of terminal
The terminal has 4 pins with a spacing of 2.54 mm between each other. Detailed parameters are as follows:
TYJW1.1  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.


  • 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.

TYJW1.1  Module Datasheet

Storage conditions

TYJW1.1  Module Datasheet

MOQ and packaging information

Product model MOQ (pcs) Shipping packaging method Modules per carton (pcs) Reels per carton (reel)
TYJW1.1 400 Bubble bags 200 2