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TYJW2-CMI Module Datasheet

Last Updated on : 2021-09-26 02:39:11download

Product overview

Developed by Tuya, TYJW2-CMI is a Wi-Fi module suitable for serial communication of the 5V 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. TYJW2-CMI includes a low-power 32-bit CPU, 2-MB flash memory, and 36-KB SRAM.

TYJW2-CMI is an RTOS platform that integrates all function libraries of the Wi-Fi MAC and TCP/IP. Based on the serial communication manner, you can develop the embedded Wi-Fi products as required.

Features

  • Embedded with a low-power 32-bit CPU, which can also function as an application processor (The clock rate supports 80 MHz and 160 MHz)
  • Operating voltage: 4.5 to 5.5V
  • Peripheral: 1 UART (5V TTL)
  • Wi-Fi connectivity
    • 802.11 b/g/n
    • Channels 1 to 14@2.4GHz
    • Support WPA/WPA2 security mode
    • Up to + 20dBm output power in 802.11b mode
    • Support STA/AP/STA+AP working mode
    • Support SmartConfig for Android and iOS devices
    • PCB antenna
  • Operating temperature: -20℃ to 85℃

Applications

  • Intelligent building
  • Smart household
  • Medical health care
  • Industrial wireless control
  • Handheld devices

Module interfaces

Dimensions and footprint

The electrical interface of TYJW2-CMI is the PHS connector with a spacing of 2.0 mm.

The dimensions of TYJW2-CMI are 49.6±0.35 mm (W)×31±0.35 mm (L)× 9.1±0.15 mm (H):
TYJW2-CMI Module Datasheet

Pin definition

The definitions of pins of TYJW2-CMI are shown in the following table:

Pin number Symbol Type Function
1 RX I/O The receiving interface of the module, which inputs the TTL level signal in the voltage of 5V
2 TX I/O The transmitting interface of the module, which outputs the TTL level signal in the voltage of 5V
3 GND P Power supply reference ground
4 VCC P Power input pin, 5V

Note: P indicates a power supply pin and I/O indicates an input/output pin

Definitions on test pins

The definitions of test pins of TYJW2-CMI are shown in the following table:

Pin number Symbol Type Function
5 3.3V P Power supply pin inside the module (3.3V)
6 GND P Power supply reference ground
7 BOOT I/O Interface 0, it’s the pin for enabling/disabling the burning of the firmware of the module.
8 TXD1 I/O An interface for displaying information of the module
9 RXD0 I/O An interface for programming firmware of the module
10 TXD0 I/O An interface for programming firmware of the module
11 RST I/O Hardware reset pin

Note:

  • P indicates a power supply pin and I/O indicates an input/output pin.
  • When the I/O 0 is pulled up, the module runs normally. When I/O 0 is at low level, the module is in the state of firmware programming.
  • RST is only a hardware reset pin and cannot be used for clearing information about- network configuration.
  • Test pins are not recommended for use.

Electrical parameters

Absolute electrical parameters

Parameter Description Minimum value Maximum value Unit
Ts Storage temperature -20 85
VCC 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

Working conditions

Parameter Description Minimum value Typical value Maximum value Unit
Ta Operating temperature -20 - 85
VCC Operating voltage 4.5 5 5.5 V
VIL Voltage Input Low -0.3 - VCC*0.25 V
VIH Voltage Input High VCC*0.75 - VCC V
VOL Voltage Output Low - - VDD*0.1 V
VOH Voltage Output High VCC* 0.8 - VCC V
Imax I/O drive current - - 5 mA

Wi-Fi transmission power consumption

TX power consumption:

Symbol Mode Rate Typical value Unit
IRF 11b 11Mbps 260 mA
IRF 11g 54Mbps 100 mA
IRF 11n MCS7 100 mA

Wi-Fi receiving power consumption

RX power consumption:

Symbol Mode Rate Typical value Unit
IRF 11b 11Mbps 70 mA
IRF 11g 54Mbps 70 mA
IRF 11n MCS7 70 mA

Power consumption in operating mode

The operating current of TYJW2-CMI is shown below:

Operating mode Operating status, Ta = 25°C Average value Maximum value Unit
Quick pairing The module is in fast pairing state and the Wi-Fi indicator always flashes 90 462 mA
Hotspot The module is in pairing state through the hotspot and the Wi-Fi indicator always flashes slowly 101 451 mA
Connected The module is connected to the network and the Wi-Fi indicator is always on 82 435 mA
Disconnected state The module is disconnected and the Wi-Fi indicator is off 156 430 mA

RF features

Basic RF features

Parameter Description
Operating frequency 2.400 to 2.4835 GHz
Wi-Fi standard IEEE 802.11 b/g/n (channels 1 to 14)
Data transmission rate 11b: 1, 2, 5.5, 11 (Mbps) 11g: 6, 9, 12, 18, 24, 36, 48, and 54 (Mbps) 11n: HT20 MCS 0~7
Antenna type PCB antenna

Wi-Fi output power

TX power consumption:

Parameter Rate Minimum value Typical value Maximum value Unit
Average output power, 802.11b CCK Mode 1M - 17 - dBm
Average output power, 802.11g OFDM Mode 54M - 15 - dBm
Average output power, 802.11n OFDM Mode MCS7 - 13.5 - dBm
Frequency error -10 - 10 ppm

Wi-Fi receiving sensitivity

RX sensitivity

Parameter Rate Minimum value Typical value Maximum value Unit
PER<8%, RX sensitivity, 802.11b CCK Mode 1 M - -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

It adopts the PCB antenna with a gain of 2.5 dBi.

Antenna interference reduction

  • To ensure the optimal Wi-Fi performance when the Wi-Fi module uses a 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 on the PCB.

TYJW2-CMI Module Datasheet
TYJW2-CMI Module Datasheet

Packaging information and production instructions

Mechanical dimensions

The dimensions of the PCB: 49.6±0.35 mm (W)×31±0.35 mm (L) ×1.6±0.15 mm (H).
TYJW2-CMI Module Datasheet

Specifications of connection wire

TYJW2-CMI Module Datasheet

Production instructions

Storage conditions for a delivered module:

  • The moisture-proof bag must be placed in an environment where the temperature is below 30°C and the relative humidity 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.

Caution:

  • In the production process, all operators must wear electrostatic rings.
  • During operation, strictly prevent the module from getting wet or dirty.

Storage conditions

TYJW2-CMI Module Datasheet

MOQ and packaging information

Product model MOQ (pcs) Packaging method Number of modules per carton Number of reels per carton
TYJW2-CMI 400 Bubble bags 200 2