TUYA TYWRD1S User manual

Hangzhou Tuya Information
Technology Co., Ltd. 1 V3.0.0
1. Product Overview
TYWRD1S is a low-power embedded Wi-Fi module that Tuya has developed. It consists
of a highly integrated RF chip (RDA5981B) and several peripheral components, with an
embedded Wi-Fi network protocol stack and robust library functions. TYWRD1S is
embedded with a low-power 32-bit CPU, 2 MB flash memory, and 448 KB static
random-access memory (SRAM), and has extensive peripherals.
TYWRD1S 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: 160 MHz
Working voltage: 3.0 V to 3.6 V
Peripherals: eight GPIOs, one universal asynchronous receiver/transmitter (UART),
and one analog-to-digital converter (ADC)
Wi-Fi connectivity
⚫802.11b/g/n
⚫2.4GHz WiFi
⚫WPA and WPA2 security modes
⚫Up to +20±2 dBm output power
Tuya TYWRD1S Wi-Fi Module
Version: 3.0.0
Date: 2019-10-12
No.: 0000000004
Global Intelligent Platform
Product
Manual

TYWRD1S Datasheet
Hangzhou Tuya Information
Technology Co., Ltd. 2 V3.0.0
⚫STA, AP, and STA+AP working modes
⚫Smart and AP network configuration modes for Android and iOS devices
⚫Onboard PCB antenna with a gain of 1.0 dBi
⚫Working temperature: –20°C to +85°C
1.2 Applications
Intelligent building
Smart household and home appliances
Smart socket and light
Industrial wireless control
Baby monitor
Network camera
Intelligent bus

TYWRD1S Datasheet
Hangzhou Tuya Information
Technology Co., Ltd. 3 V3.0.0
Change History
No.
Date
Change Description
Version After
Change
1
2019-06-20
This is the first release.
1.0.0
2
2019-07-26
Revised the document.
2.0.0
3
2019-10-12
Revised the document.
3.0.0

TYWRD1S Datasheet
Hangzhou Tuya Information
Technology Co., Ltd. 4 V3.0.0
Contents
1. Product Overview ............................................................................................................1
1.1 Features .................................................................................................................1
1.2 Applications ............................................................................................................2
2 Module Interfaces .............................................................................................................6
2.1 Dimensions and Footprint ......................................................................................6
2.2 Interface Pin Definition ...........................................................................................6
2.3 Test Pin Definition...................................................................................................8
3. Electrical Parameters.......................................................................................................8
3.1 Absolute Electrical Parameters ..............................................................................8
3.2 Electrical Conditions ...............................................................................................9
3.3 Working Current ...................................................................................................10
4 RF Features ....................................................................................................................11
4.1 Basic RF Features................................................................................................11
4.2 TX Performance ...................................................................................................11
4.3 RX Performance...................................................................................................12
5 Antenna Information........................................................................................................12
5.1 Antenna Type........................................................................................................12
5.2 Antenna Interference Reduction...........................................................................12
5.3 Antenna Connector Specifications .......................................................................12
6 Packaging Information and Production Instructions.......................................................13
6.1 Mechanical Dimensions .......................................................................................13
6.2 Recommended PCB Layout.................................................................................15
6.3 Production Instructions.........................................................................................16
6.4 Recommended Oven Temperature Curve ...........................................................18
6.5 Storage Conditions ...............................................................................................19
7 MOQ and Packing Information .......................................................................................20

TYWRD1S Datasheet
Hangzhou Tuya Information
Technology Co., Ltd. 5 V3.0.0
8 Appendix: Statement.......................................................................................................21
Tables
Table 2-1 TYWRD1S interface pins.....................................................................................6
Table 2-2 TYWRD1S test pins.............................................................................................8
Table 3-1 Absolute electrical parameters ............................................................................8
Table 3-2 Normal electrical conditions.................................................................................9
Table 3-4 TYWRD1S working current................................................................................10
Table 4-1 Basic RF features ..............................................................................................11
Table 4-2 Performance during constant transmission .......................................................11
Table 4-3 RX sensitivity .....................................................................................................12
Figures
Figure 2-1 TYWRD1S dimensions ......................................................................................6
Figure 5-1 U.FL RF connector parameters........................................................................13
Figure 6-1 TYWRD1S mechanical dimensions .................................................................14
Figure 6-2 Side view ..........................................................................................................14
Figure 6-3 TYWRD1S pins ................................................................................................15
Figure 6-4 Layout of the PCB to which TYWRD1S applies ..............................................16
Figure 6-5 HIC for TYWRD1S ...........................................................................................17
Figure 6-6 Oven temperature curve ..................................................................................18

TYWRD1S Datasheet
Hangzhou Tuya Information
Technology Co., Ltd. 6 V3.0.0
2 Module Interfaces
2.1 Dimensions and Footprint
TYWRD1S has two rows of pins with a 1.5±0.1 mm pin spacing.
The TYWRD1S dimensions (H x W x D) are 3.3±0.1 mm x 18±0.35 mm x 23.5±0.35 mm.
Figure 1-1 shows the TYWRD1S dimensions.
Figure 2-1 TYWRD1S dimensions
2.2 Interface Pin Definition
Table 2-1 TYWRD1S interface pins
Pin No.
Symbol
I/O Type
Function
1
VCC
P
Power input pin for the internal level conversion

TYWRD1S Datasheet
Hangzhou Tuya Information
Technology Co., Ltd. 7 V3.0.0
Pin No.
Symbol
I/O Type
Function
circuit (3.3 V or 5 V)
2
UART-TX
I/O
UART0_TXD (See the following Note 3.)
3
UART-RX
I/O
UART0_RXD (See the following Note 3.)
4
3.3 V
P
Power supply pin (3.3 V)
5
GND
P
Power supply reference ground pin
6
GPIO23
I/O
Hardware PWM pin, which is connected to
GPIO23 (pin 33) on the internal IC
7
GPIO22
I/O
Hardware PWM pin, which is connected to
GPIO22 (pin 34) on the internal IC
8
GPIO25
I/O
Hardware PWM pin, which is connected to
GPIO25 (pin 31) on the IC
9
GPIO0
I/O
Common GPIO, which is connected to GPIO0 (pin
36) on the IC
10
GPIO24
I/O
Hardware PWM pin, which is connected to
GPIO24 (pin 32) on the internal IC
11
GPIO1
I/O
Common GPIO, which is connected to GPIO1 (pin
21) on the internal IC
12
GPIO8
I/O
Common GPIO, which is connected to GPIO8 (pin
13) on the internal IC
13
GPIO3
I/O
Hardware PWM pin, which is connected to GPIO3
(pin 23) on the internal IC
14
GND
P
Power supply reference ground pin
15
GND
P
Power supply reference ground pin
16
nRST
I/O
Hardware reset pin (The module has an internal
pull-up resistor, and the reset pin is active at a low
level.)
17
ADC
AI
10-bit SAR ADC (See the following Note 2.)
18
GND
P
Power supply reference ground pin

TYWRD1S Datasheet
Hangzhou Tuya Information
Technology Co., Ltd. 8 V3.0.0
Note:
1. P indicates power supply pins, I/O indicates input/output pins, and AI indicates analog
input pins. nRST is only a hardware reset pin and cannot clear the Wi-Fi network
configuration.
2. This pin can only function as an ADC input and not a common I/O. If this pin is not
used, it must be disconnected. When this pin is used as an ADC input, the input
voltage range is 0 V to 1.0 V.
3. UART0 is a user-side serial interface, which generates information when the module
is powered on and starts.
2.3 Test Pin Definition
Table 2-2 TYWRD1S test pins
Pin No.
Symbol
I/O Type
Function
N/A
TEST
Input
Used for the module production test
Note:
Test pins are not recommended.
3. Electrical Parameters
3.1 Absolute Electrical Parameters
Table 3-1 Absolute electrical parameters
Parameter
Description
Minimum
Value
Maximum
Value
Unit
Ts
Storage
temperature
–20
85
°C
VBAT
Power supply
voltage
3.0
3.6
V
Static electricity voltage
(human body model)
Tamb = 25°C
N/A
2
kV

TYWRD1S Datasheet
Hangzhou Tuya Information
Technology Co., Ltd. 9 V3.0.0
Parameter
Description
Minimum
Value
Maximum
Value
Unit
Static electricity voltage
(machine model)
Tamb = 25°C
N/A
0.5
kV
3.2 Electrical Conditions
Table 3-2 Normal electrical conditions
Parameter
Description
Minimum
Value
Typical
Value
Maximum
Value
Unit
Ta
Working
temperature
–20
N/A
85
°C
VBAT
Power supply
voltage
3.0
3.3
3.6
V
VIL
I/O low-level input
–0.3
N/A
VCC x 0.25
V
VIH
I/O high-level input
VCC x 0.75
N/A
VCC
V
VOL
I/O low-level
output
N/A
N/A
VCC x 0.1
V
VOH
I/O high-level
output
VCC x 0.8
N/A
VCC
V
Imax
I/O drive current
N/A
N/A
12
mA

TYWRD1S Datasheet
Hangzhou Tuya Information
Technology Co., Ltd. 10 V3.0.0
3.3 Working Current
Table 3-4 TYWRD1S working current
Working
Mode
Working Status (Ta = 25°C)
Average
Value
Unit
EZ
The module is in EZ mode, and the Wi-Fi
indicator blinks quickly.
70
mA
AP
The module is in AP mode, and the Wi-Fi
indicator blinks slowly.
80
mA
Connected
The module is connected to the network,
and the Wi-Fi indicator is steady on.
70
mA