T211x-WR1-IPEX Module Datasheet

Product Overview

Developed by Tuya, T211x-WR1-IPEX is a WiFi module that is suitable for serial communication of 3.3V. It mainly consists of a WiFi module WR1-IPEX module and a level conversion circuit. It is further embedded with the WiFi network protocol stack and serial communication protocol.
T211x-WR1-IPEX is an RTOS platform that integrates all function libraries of the WiFi MAC and TCP/IP protocols. On the basis of the serial communication manner, you can develop embedded WiFi products as required.

Features

1. Embedded low-power 32-bit CPU, which can also function as an application processor
2. The maximum clock rate: 125 MHz
3. Working voltage: 3.3V
4. Peripherals: 1 universal asynchronous receiver/transmitter (UART)
5. WiFi connectivity
   • 802.11 b/g/n20/n40
   • Channels 1 to 14@2.4GHz, (Ch 1 to 11 for US/CA,Ch 1 to 13 for EU/CN)
   • Support WPA and WPA 2 security modes
   • Up to +20 dBm output power in 802.11b mode
   • Support SmartConfig and AP network configuration manners for Android and IOS devices
   • Onboard PCB antenna and external antenna IPEX connector
   • Working temperature: -20℃ to 85℃

Applications

• Intelligent building
• Smart household and home appliances
• Smart socket and light
• Industrial wireless control
• Baby monitor
• Network camera
• Intelligent bus

Change History

Serial Number	Update Date	Updated Content	Version after Update
1	04/19/2019	This is the first release.	V1.0.0
2	5/21/2020	Content and format were revised.	V2.0.0

Module Interfaces

Dimensions and Footprint

The electrical interface of T211x_WR1_IPEX is a vertical placement 4P wafer and a connector with a pin spacing of 1.5 mm.
The dimensions of T211x-WR1-IPEX are 29.95±0.35 mm (W)×32.95±0.35 mm (L) ×6.35±0.15 mm (H). The thickness of the PCB is 1.2±0.1 mm. Its dimensions are shown in the following figure:

Pin Definition

Pin Number	Symbol	I/O Type	Function
1	RX	I/O	RX interface for communication of the module
2	TX	I/O	TX interface for communication of the module
3	GND	P	Power supply reference ground
4	VCC	P	Power supply pin (3.3V)

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

Definitions on Test Points

Pin Number	Symbol	I/O Type	Function
5	3.3V	P	Power supply pin inside the module (3.3V)
6	GND	P	Power supply reference ground
7	U0RX	I/O	Programming interface for firmware of the module
8	U0TX	I/O	Programming interface for firmware of the module

Note: P indicates power supply pins, I/O indicates input/output pins and test points are prohibited.

Electrical Parameters

Absolute Electrical Parameters

Parameter	Description	Minimum value	Maximum Value	Unit
Ts	Storage temperature	-40	125	℃
VBAT	Power supply voltage	-0.3	3.6	V
Static electricity discharge voltage (human body model)	TAMB-25℃	-	2	KV
Static electricity discharge 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	IO low-level input	-0.3	-	VCC*0.25	V
VIH	IO high-level input	VCC*0.75	-	VCC	V
VOL	IO low-level output	-	-	VCC*0.1	V
VOH	IO high-level output	VCC*0.8	-	VCC	V
Imax	IO drive current	-	-	16	mA
Cpad	Input pin capacitance	-	2	-	pF

TX Power Consumption

Working Status	Mode	Rate	Transmit Power	Average Value	Peak Value (Typical Value))	Unit
Transmit	11b	11 Mbps	+18 dBm	343	382	mA
Transmit	11b	11 Mbps	+17 dBm	295	367	mA
Transmit	11 g	54 Mbps	+15 dBm	255	406	mA
Transmit	11 g	54 Mbps	+17.5 dBm	267	428	mA
Transmit	11n BW20	MCS 7	+13 dBm	244	395	mA
Transmit	11n BW20	MCS 7	+16.5 dBm	257	422	mA
Transmit	11n BW40	MCS 7	+13 dBm	220	393	mA
Transmit	11n BW40	MCS 7	+16.5 dBm	230	420	mA

RX power consumption

Working Status	Mode	Rate	Receive	Average Value	Peak Value (Typical Value))	Unit
Receive	CPU Sleep	11Mbps	Constantly receive	90	-	mA
Receive	CPU Active	MCS7 BW20	Constantly receive	120	-	mA

Working Current

Working Mode	Working Status, Ta = 25°C	Average Value	Peak Value (Typical Value)	Unit
Quick connection network state	The module is in the fast network connection state and the WiFi indicator always flashes	115	376	mA
Hotspot network configuration state	The module is in the hotspot network configuration state and the WiFi indicator flashes slowly	60	386	mA
Network connection state	The module is connected to the network and the WiFi indicator is always on	105	389	mA
Disconnected state	The module is disconnected and the WiFi indicator is dark	45	381	mA

Note: The above parameters may vary with different firmware functions.

RF Parameters

Basic RF Features

Parameter	Description
Working frequency	2.412 to 2.484 GHz
WiFi 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, 54 (Mbps); 11n: HT20 MCS 0 to 7; 11n: HT40 MCS 0 to 7
Antenna type	Antenna to which a U.FL RF connector is externally connected (default)

TX Performance

TX performance

Parameter	Minimum Value	Typical Value	Maximum Value	Unit
Average RF output power, 802.11b CCK Mode 11M	-	17.5	-	dBm
Average RF output power, 802.11g OFDM Mode 54M	-	14.5	-	dBm
Average RF 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	-	-92	-	dBm
PER<10%, RX sensitivity, 802.11g OFDM Mode 54M	-	-76	-	dBm
PER<10%, RX sensitivity, 802.11n OFDM Mode MCS7	-	-73	-	dBm

Antenna Information

Antenna Type

T211x-WR1-IPEX uses an antenna to which a U.FL RF connector is externally connected.

U.FL RF Connector

Parameters of the U.FL RF connector are as belows:

Antenna Interference Reduction

To ensure optimal WiFi performance when the WiFi module uses an onboard PCB antenna, it is recommended that the antenna be at least 15 mm away from other metal parts.
To ensure the antenna performance, the PCB should not be routed or clad with copper in the antenna area.

Packaging Information 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).

Production Instructions

Storage conditions for a delivered module are as follows:
1. 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%.
2. The shelf life of a dry-packaged product is 6 months from the date when the product is packaged and sealed.
Caution:
1. In the production process, all operators must wear electrostatic rings.
2. During operation, strictly prevent the module from getting wet or dirty.

Recommended Oven Temperature Curve

Perform SMT based on the following reflow oven temperature curve. The highest temperature is 245°C. The reflow temperature curve is shown as belows:

Storage Conditions

MOQ and Packaging Information

Product Number	MOQ (pcs)	Shipping packaging method	The number of modules per carton (pcs)	The number of reels per carton (reel)
T211x-WR1-IPEX		Tray	200	2