HS01-485-WR3 Module Datasheet

Product overview

HS01-485-WR301 is a module that performs wired communication with RS485 and wireless communication with Wi-Fi. It consists of a highly integrated wireless RF chip (RTL8710BN), an RS485 chip, and a DC-DC power supply chip. Besides, it is built-in with the Wi-Fi network protocol stack and rich library functions. HS01-485-WR301 further includes a low-power 32-bit CPU, 2-MB flash memory, 256-KB SRAM, WLAN MAC, 1T1R WLAN, and rich peripheral resources.

Features

• Embedded with a low-power 32-bit CPU, which can also function as an application processor

  • Clock rate: 125 MHz

• Operating voltage: 5V

• Peripheral: 1 UART

• Wi-Fi connectivity

  • 802.11 b/g/n20/n40

  • 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 functions for Android and iOS devices

  • Onboard antenna and external antenna with an IPEX connector

  • Operating temperature: -20 to 85℃

Applications

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

Module interfaces

Dimensions and footprint

The electrical interface of the adapter board is the PH-4AW connector. The interval between every two pins is 2.54 mm.
The dimensions of the adapter board are 20±0.35 mm (W)× 40±0.35 mm (L) × 8.0±0.15 mm (H), which are shown below:

Note: H is the distance between the bottom and the top of the adapter board.

Pin definition

The definitions of pins are shown in the following table:

Pin number	Symbol	Type	Function
1	A	I/O	Interface A for communication with the RS485
2	B	I/O	Interface B for communication with the RS485
3	GND	P	Power supply reference ground
4	5V	P	Power supply 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 are shown in the following table:

Pin number	Symbol	Type	Function
1	3V3	P	Power supply pin (3.3V)
2	GND	P	Power supply reference ground
5	RX	I/O	UART0_Rx, used as the authorization interface
6	TX	I/O	UART0_Tx, used as the authorization interface
7	LOG_TX	I/O	Log TX, used for transmitting logs
8	LOG_RX	I/O	Log RX, used for receiving logs

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

Electrical parameters

Absolute electrical parameters

Absolute parameters

Parameter	Description	Minimum value	Maximum value	Unit
Ts	Storage temperature	-20	85	℃
VCC	Supply voltage	2.5	5.5	V
ESD voltage (human body model)	TAMB-25℃	-	2	KV
ESD voltage (machine model)	TAMB-25℃	-	0.5	KV

Operating conditions

Normal operating 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	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	-	-	5	mA

Wi-Fi transmission power consumption

TX power consumption:

Symbol	Mode	Power	Typical value	Unit
IRF	11b 11Mbps	18dBm	343	mA
IRF	11g 6Mbps	18dBm	331	mA
IRF	11g 54Mbps	15dBm	282	mA
IRF	11n MCS0（20M）	18dBm	337	mA
IRF	11n MCS7（20M）	13dBm	267	mA
IRF	11n MCS0（40M）	18dBm	337	mA
IRF	11n MCS7（40M）	13dBm	262	mA

Wi-Fi receiving power consumption

RX power consumption:

Symbol	Mode	Typical value	Unit
IRF	CPU Sleep	90	mA
IRF	CPU Active	120	mA

RF features

Basic RF features

Basic RF Features

Parameter	Description
Working 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, 54 (Mbps) 11n: HT20 MCS 0 to 7; HT40 MCS 0 to 7
Antenna type	PCB antenna (default) or antenna used with a U.FL RF connector

Wi-Fi output power

TX power

Parameter		Minimum value	Typical value	Maximum value	Unit
Average RF output power, 802.11b CCK Mode	1M	-	17	-	dBm
Average RF output power, 802.11g OFDM Mode	54M	-	15	-	dBm
Average RF output power, 802.11n/n20 OFDM Mode	MCS7	-	13.5	-	dBm
Frequency error		-20	-	20	ppm

WiFi Receiving Sensitivity

RX sensitivity

Parameter		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

HS01-485-WR301 supports two types of antennas: Onboard antenna and external antenna. By default, the onboard PCB antenna is preferred. If you use the external antenna, please contact Tuya sales personnel.

Antenna interference reduction

To ensure 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.
During layout, you should note:

• Make sure that there is no substrate medium directly below or above the printed antenna.
• Make sure that the area around the printed antenna is far away from copper, to ensure the radiation effect of the antenna.

U.FL RF connector

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

Packaging information

Mechanical dimensions

The dimensions of the adapter board are 20±0.35 mm (W)× 40±0.35 mm (L) × 8.0±0.15 mm (H).

Note: H is the distance between the bottom and the top of the adapter board.

Production instructions

Storage conditions for a delivered module are as follows:

• 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.