T211x-WBR1-IPEX Module Datasheet

Last Updated on : 2024-06-14 18:43:49download

T211x-WBR1-IPEX is a Wi-Fi module developed by Tuya Smart and designed for 3.3V serial communication. The module is composed of Tuya’s proprietary Wi-Fi module WBR1-IPEX and a level translator, with a built-in Wi-Fi network protocol stack and Tuya’s serial protocol.

Overview

T211x-WBR1-IPEX combines a low-power KM4 microcontroller unit (MCU), WLAN MAC, and 1 transmitter/1 receiver (1T1R) design. This module provides output frequency up to 100 MHz, 256 KB embedded SRAM, 2 MB flash memory, and configurable GPIOs that can function as digital peripherals for diverse applications.

T211x-WBR1-IPEX is a real-time operating system (RTOS), integrated with all Wi-Fi MAC and TCP/IP libraries. All these resources can help develop your own embedded Wi-Fi products.

Features

  • Built-in low-power KM4 MCU that also acts as an application processor.
  • Clock rate of 100 MHz.
  • Operating voltage range: 3.3V.
  • Peripheral: 1 universal asynchronous receiver/transmitter (UART).
  • Wi-Fi connectivity
    • IEEE 802.11 b/g/n20.
    • Channels 1–14@2.4 GHz (CH1–11 for US/CA and CH1–13 for EU/CN).
    • Support security protocols like WPA and WPA2.
    • The maximum output power is +20 dBm for IEEE 802.11b transmission.
    • Two pairing modes are supported, namely Wi-Fi Easy Connect (EZ mode) and access point (AP) mode. Both modes are suitable for pairing with Android and iOS mobile phones.
  • PCB antenna and external antenna with IPEX connector.
  • Operating temperature range: -20°C to +85°C.

Scope of applications

  • Smart building
  • Smart home and electrical appliance
  • Smart socket and light
  • Industrial wireless control
  • Baby monitor
  • IP camera
  • Smart bus

Interfaces

Dimensions and footprint

The electrical interface of this module is a vertical pin seat and ZH1.5mm pitch male socket with a 4P connector, and the pin pitch is 1.5 mm.
The dimensions are 29.95±0.35 mm (W) × 32.95±0.35 mm (L) × 6.35±0.15 mm (H). The PCB is 1.2 mm±0.1 mm thick, and the PCB dimensions are shown in the figure below:

T211x-WBR1-IPEX Module Datasheet T211x-WBR1-IPEX Module Datasheet

Pin definition

Pin No. Symbol I/O type Description
1 RX I/O RX port on the module
2 TX I/O TX port on the module
3 GND P Ground pin.
4 VCC P Power supply pin (3.3V).

Definitions of test pins

Pin No. Symbol I/O type Description
5 3.3V P Power supply pin (3.3V) in the module.
6 GND P Ground pin.
7 U0RX I/O Firmware flashing port.
8 U0TX I/O Firmware flashing port.

P indicates the power pin, and I/O indicates the input and output pin. Do not use test pins.

Electrical parameters

Absolute electrical parameters

Parameter Description Min value Max value Unit
Ts Storage temperature -40 125 °C
VBAT Supply voltage -0.3 3.6 V
Electrostatic discharge voltage (human body model) TAMB -25°C - 2 kV
Electrostatic discharge voltage (machine model) TAMB -25°C - 0.5 kV

Normal operating conditions

Parameter Description Min value Typical value Max value Unit
Ta Operating temperature -20 - 85 °C
VBAT Supply voltage 3.0 3.3 3.6 V
VIL I/O low-level input -0.3 - VCC × 0.25 V
VIH I/O high-level input VCC × 0.75 - VCC V
VOL I/O low-level output - - VCC × 0.1 V
VoH I/O high-level output VCC × 0.8 - VCC V
Imax I/O drive current - - 16 mA
Cpad Input pin capacitor - 2 - pF

Power consumption during continuous transmission

Working status Mode Rate Transmission power Average value Peak (Typical) value Unit
Transmit 11b 11 Mbit/s +18 dBm 231 283 mA
Transmit 11b 11 Mbit/s +17 dBm 217 268 mA
Transmit 11g 54 Mbit/s +15 dBm 159 188 mA
Transmit 11g 54 Mbit/s +17.5 dBm 177 213 mA
Transmit 11n BW20 MCS7 +13 dBm 145 167 mA
Transmit 11n BW20 MCS7 +16.5 dBm 165 193 mA

Power consumption during continuous reception

Working status Mode Rate Receive Average value Peak (Typical) value Unit
Receive CPU sleep 11 Mbit/s Continuous reception 63 - mA
Receive CPU active MCS7 BW20 Continuous reception 65 - mA

Power consumption in working mode

Work mode Status (Ta = 25°C) Average value Peak (Typical) value Unit
Quick pairing (Bluetooth) The module is in EZ mode. The Wi-Fi network status indicator blinks quickly. 61 272 mA
Quick pairing (AP) The module is in AP mode. The Wi-Fi network status indicator blinks slowly. 59 272 mA
Quick pairing (AP) The module is in EZ mode. The Wi-Fi network status indicator blinks quickly. 62 280 mA
Idle The module is connected to the cloud. The Wi-Fi network status indicator is steady on. 51 260 mA
Connected and operating The module is connected to the cloud. The Wi-Fi network status indicator is steady on. 59 268 mA
Weakly connected The connection between the module and the hotspot is intermittent. The Wi-Fi network status indicator is steady on. 62 264 mA
Disconnected The module is disconnected from the cloud. The Wi-Fi network status indicator is steady off. 57 268 mA

The above parameters vary depending on different firmware features.

RF parameters

Basic RF features

Parameter Description
Operating frequency 2.412 to 2.484 GHz
Wi-Fi standard IEEE 802.11b/g/n (channels 1–14)
Data transmission rate
  • IEEE 802.11b: 1, 2, 5.5, and 11 Mbit/s
  • IEEE 802.11g: 6, 9, 12, 18, 24, 36, 48, and 54 Mbit/s
  • IEEE 802.11n: HT20 MCS0–7
  • IEEE 802.11n: HT40 MCS0–7
Antenna type External antenna with U.FL RF connector (default)

Transmission performance

TX continuous transmission performance

Parameter Min value Typical value Max 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
Frequency error -20 - 20 ppm

Receiving performance

RX sensitivity

Parameter Min value Typical value Max value Unit
PER < 8%, RX sensitivity, 802.11b DSSS mode, 1M - -97 - 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

This module uses an external antenna with a U.FL RF connector.

U.FL RF connector

The following figure shows the parameters of the U.FL RF connector.

T211x-WBR1-IPEX Module Datasheet

Antenna interference reduction

When a PCB antenna is used on a Wi-Fi module, we recommend that the module antenna is at least 15 mm away from other metal components. This can optimize the Wi-Fi performance. Make sure that the enclosure surrounding the antenna is not traced or filled with copper. Otherwise, the RF performance might be degraded.

T211x-WBR1-IPEX Module Datasheet

T211x-WBR1-IPEX Module Datasheet

Packing and production instructions

Mechanical dimensions

The PCB dimensions are 29.95±0.35 mm (W) × 32.95±0.35 mm (L) × 1.2±0.1 mm (H).

T211x-WBR1-IPEX Module Datasheet T211x-WBR1-IPEX Module Datasheet

Terminals

The terminal specification is 1.5 mm × 4 pins. The detailed parameters are as follows:

T211x-WBR1-IPEX Module Datasheet

Production instructions

A delivered module must meet the following storage requirements:

  • 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.

Things to note

  • During the whole production process, operators at each station must wear electrostatic rings.
  • During operation, keep the module away from water or dirt.

Recommended oven temperature curve

Perform the SMT process according to the following temperature curve of reflow soldering. The peak temperature is 245°C.

T211x-WBR1-IPEX Module Datasheet

Storage conditions

T211x-WBR1-IPEX Module Datasheet

MOQ and packaging information

Product model MOQ (pcs) Shipping packaging Modules per carton (pcs) Reels per carton
T211x-WBR1-IPEX 25 Pallet 200 2