Tuya Smart Wi-Fi Module--WR5P

Product Overview

​ WR5P is a low power-consuming built-in Wi-Fi module developed by Hangzhou Tuya Information Technology Co., Ltd. It consists of a highly integrated wireless radio chip (RTL8710BN) and an external flash chip, with a built-in Wi-Fi network protocol stack and robust library functions. WR5P also contains a low power-consuming ARM CM4F, a WLAN MAC, a 1T1R WLAN, a basic frequency of up to 125 MHz, a 256 KB SRAM, a 1 MB flash, and various peripheral resources.

​ WR5P is an RTOS platform that integrates all the function libraries of the Wi-Fi MAC and TCP/IP protocols. You can develop built-in Wi-Fi products as required.

​ Figure 1.1 shows the architecture of WR5P.

Features

Built-in low power-consuming 32-bit CPU, which can also be used as an application processor

• Basic frequency: 125 MHz

Working voltage:3 V to 3.6 V

Peripherals: nine GPIOs, one UART, and one ADC

Wi-Fi connectivity

• 802.11 B/G/N20/N40

• Channel 1–14@2.4 GHz

• WPA/WPA2 security mode supported

• +20 dBm output power in 802.11b mode

• SmartConfig function supported (for Android and iOS devices)

• Onboard PCB antenna

• Certified by CE, FCC, and SRRC

• Working temperature: –20°C to +85°C

Major Application Fields

• Intelligent building
• Intelligent home and household applications
• Health care
• Industrial wireless control
• Baby monitor
• Network camera
• Intelligent bus

Module Interfaces

Dimensions and Footprint

​ WR5P provides two rows of pins with the distance of 2.0 mm between every two pins.

​ WR5P dimensions: 16 mm (W) x 24.74 mm (L) x 3.3 mm (H) (see figure 2.1)

Pin Definition

Table 2.1 describes the common pins.
​ Table 2.1 WR5P pins

Pin	Symbol	I/O Type	Functions
1	GPIOA_30	I/O	UART_Log_TXD (used for printing of the module internal information)
2	GPIOA_12	I/O	GPIOA_12
3	GPIOA_29	I/O	UART_Log_RXD (used for printing of the module internal information)
4	GPIOA_14	I/O	GPIOA_14
5	GND	P	Power supply reference ground pin
6	GPIOA_23	I/O	UART0_TXD (user’s serial port)
7	VD33	P	Module power supply pin (3.3 V)
8	GPIOA_18	I/O	UART0_RXD (user’s serial port)
9	GPIOA_19	I/O	GPIOA_19
10	GPIOA_5	I/O	GPIOA_5
11	GPIOA_15	I/O	GPIOA_15
12	GPIOA_0	I/O	GPIOA_0, which cannot be pulled up during power-on and can be configured after power-on
13	GPIOA_22	I/O	GPIOA_22
14	EN	I/O	The pin function is disabled by firmware, user can choose not to connect.
15	ADC	AI	ADC interface, with the maximum output power of 5 V

Note: P indicates power-supply pins, I/O indicates input/output pins, and AI indicates analog input pins.

Electrical Characteristics

Absolute Electrical Characteristics

​ Table 3.1 Absolute electrical characteristics

Parameters	Description	Minimum value	Maximum value	Unit
Ts	Storage temperature	-40	105	℃
VDD	Power supply voltage	-0.3	3.6	V
Static electricity voltage (human model)	TAMB-25℃	-	2	KV
Static electricity voltage (machine model)	TAMB-25℃	-	0.5	KV

Electrical conditions

​ Table 3.2 Normal electrical conditions

Parameters	Description	Min	Typ	Max	Unit
Ta	Working temperature	-20	-	85	℃
VDD	Working voltage	3.0	-	3.6	V
VIL	I/O low-level input	-0.3	-	VCC*0.25	V
VIH	I/O high-level input	VCC*0.75	-	3.6	V
VOL	I/O low-level output	-	-	VCC*0.1	V
VOH	I/O high-level output	VCC*0.8	-	VDD	V
Imax	I/O drive current	-	-	16	mA
Cpad	Input pin capacitor	-	2	-	pF

Wi-Fi TX Power Consumption

​ Table 3.3 TX power consumption during constan emission

Symbol	Mode	Power	Typical Value	Unit
IRF	11b11 Mbit/s	17 dBm	287	mA
IRF	11b11 Mbit/s	18 dBm	295	mA
IRF	11g54 Mbit/s	15 dBm	255	mA
IRF	11g54 Mbit/s	17.5 dBm	267	mA
IRF	11n BW20MCS7	13 dBm	244	mA
IRF	11n BW20MCS7	16.5 dBm	257	mA
IRF	11n BW40MCS7	13 dBm	220	mA
IRF	11n BW40MCS7	16.5 dBm	230	mA

Wi-Fi RX Power Consumption

​ Table 3.4 RX power consumption during constant emission

Symbol	Mode	Typical Value	Unit
IRF	CPU sleep	90	mA
IRF	CPU active	120	mA

Power Consumption in Operating Mode

​ Table 3.5 Module working current

Working Mode	Working Status(Ta=25°C)	Typical Value	Peak Value	Unit
EZ mode	The module is in EZ status and the Wi-Fi indicator quickly flashes.	115	130	mA
Idle mode	The module is in connected status and the Wi-Fi indicator is steady on.	50	110	mA
Operation mode	The module is in connected status and the Wi-Fi indicator is steady on.	120	265	mA
Disconnection mode	The module is in disconnected status and the Wi-Fi indicator is steady off.	35	90	mA

Note: The peak duration is about 5 µs.
​ The preceding parameter values vary depending on the firmware functions.

RF Features

Basic RF Features

​ Table 4.1,Basic RF features

Parameter	Description
Frequency band	2.400–2.4835 GHz
Wi-Fi standard	BIEEE 802.11b/g/n (channel 1–14)
Data transmitting rate	11b: 1, 2, 5.5, 11 (Mbit/s) 11g: 6, 9, 12, 18, 24, 36, 48, 54 (Mbit/s) 11n: HT20 MCS0–MCS7 11n: HT40 MCS0–MCS7
Antenna type	Onboard PCB antenna

WI-FI Output Power

​ Table 4.2 TX power during constant emission

Parameter		Minimum Value	Typical Value	Maximum Value	Unit
RF average output power, 802.11b CCK mode	11 M	-	17.5	-	dBm
RF average output power, 802.11g OFDM mode	54 M	-	14.5	-	dBm
RF average output power, 802.11n OFDM mode	MCS7	-	13.5	-	dBm
Frequency error		-10	-	10	ppm

WI-FI RX sensitivity

​ Table 4.3 RX Sensitivity

Parameter		Minimum Value	Typical Value	Maximum Value	Unit
PER < 8%, RX sensitivity, 802.11b CCK mode	11 M	-	-91	-	dBm
PER < 10%, RX sensitivity, 802.11g OFDM mode	54 M	-	-75	-	dBm
PER < 10%, RX sensitivity, 802.11n OFDM mode	MCS7	-	-72	-	dBm

Antenna Information

Antenna types

​ WR5P uses the onboard PCB antenna.

Antenna Interference Reduction

​ To ensure optimal Wi-Fi performance when the Wi-Fi module uses the onboard PCB antenna, it is recommended that there be a space of at least 15 mm between the module antenna and other metal parts.

Packaging Information and Poduction Instructions

Mechanical Dimensions

Note: PCB frame tolerance ±0.15 mm, PCB depth tolerance ±0.1 mm

Recommended PCB Encapsulation

Production Instructions

Storage conditions of a delivered module are as follows:

1. The anti-moisture bag is placed in an environment where the temperature is under 30°C and the relative humidity is under 85%.
2. The shelf life of a dry-packaged product is six months from the date when the product is packaged and sealed.

Precautions:

1. Throughout the production process, each involved operator must wear an electrostatic ring.
2. During the operation, strictly protect the module from water and strains.

Recommended Oven Temperature Profile