RLC2V Module Datasheet

RLC2V is a low power-consuming built-in Wi-Fi module developed by Hangzhou Tuya Information Technology Co., Ltd. It consists of a highly integrated radio frequency chip (RTL8710BX) and an external flash chip, with a built-in Wi-Fi network protocol stack and robust library functions.

Overview

RLC2V also contains a low power-consuming ARM CM4F, a WLAN MAC, a 1T1R WLAN, and the maximum basic frequency of 62.5 MHz, and is embedded with a 256 KB SRAM, a 2 MB flash, and robust peripheral resources.

RLC2V 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.

The schematic diagram of RLC2V:

Features

Built-in low power-consuming 32-bit CPU functioning as an application processor

• Basic frequency: 62.5 MHz

• Working voltage: 5 V to 38 V (16 V to 38 V by default)

• Peripherals: five GPIOs

• Wi-Fi connectivity

  • 802.11 b/g/n20/n40
  • Channels 1 to 14@2.4 GHz
  • WPA/WPA2 security mode
  • Up to +20 dBm output power in 802.11b mode
  • SmartConfig mode (for Android and iOS devices)
  • Onboard PCB antenna
  • Passing the CE, FCC, and SRRC certification
  • Working temperature: –20°C to +105°C

Major application fields

• Intelligent building
• Intelligent home and household appliances
• Healthcare
• Industrial wireless control
• Baby monitor
• Network camera
• Intelligent bus

Module interfaces

Dimensions and pin layout

RLC2V provides two rows of pins (2 x 4) with a distance of 2.0 mm between every two pins.

RLC2V dimensions: 26 mm (W) x 20 mm (L) x 3.5 mm (H).

Pin definition

No.	Symbol	I/O type	Function
1	GPIOA_0	I/O	GPIOA_0, which cannot be pulled up during power-on and can be configured after power-on. It is used for hardware PWM.
2	GND	P	Power supply reference ground pin
3	VIN	P	Power supply input
4	3.3V	P	Power supply output
5	GPIOA_12	I/O	GPIOA_12, used for hardware PWM
6	GPIOA_5	I/O	GPIOA_5, used for hardware PWM
7	GPIOA_14	I/O	GPIOA_14, used for hardware PWM
8	GPIOA_15	I/O	GPIOA_15, used for hardware PWM

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

Electrical parameters

Absolute electrical parameters

Absolute parameters:

Parameter	Description	Minimum value	Maximum value	Unit
Ts	Storage temperature	–40	125	°C
VIN	Power supply voltage	–0.3	40	V
Static electricity voltage (human model)	TAMB – 25°C	-	2	kV
Static electricity voltage (machine model)	TAMB – 25°C	-	0.5	kV

Electrical conditions

Normal electrical conditions:

Parameter	Description	Minimum value	Typical value	Maximum value	Unit
Ta	Working temperature	–20	-	105	°C
VIN	Working voltage	5 NOTE	-	38	V
VIL	I/O low-level input	–0.3	-	0.8	V
VIH	I/O high-level input	2.47	-	3.6	V
VOL	I/O low-level output	-	-	0.34	V
VOH	I/O high-level output	2.64	-	3.4	V
Imax	I/O drive current	-	-	16	mA
Cpad	Input pin capacitance	-	2	-	pF

^NOTE: The minimum working voltage of the delivered module is 16 V by default. To change this value, specify it in order.

Wi-Fi TX power consumption

TX power during constant emission:

Symbol	Mode	Rate	Typical value	Unit
IRF	11b	17 dBm	287	mA
IRF	11 Mbit/s	18 dBm	295	mA
IRF	11g 54 Mbit/s	15 dBm	255	mA
IRF	11g 54 Mbit/s	17.5 dBm	267	mA
IRF	11n BW20 MCS7	13 dBm	244	mA
IRF	11n BW20 MCS7	16.5 dBm	257	mA
IRF	11n BW40 MCS7	13 dBm	220	mA
IRF	11n BW40 MCS7	16.5 dBm	230	mA

Wi-Fi RX power consumption

RX power during constant receiving:

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

Power consumption in working mode

Module working current:

Working mode	Working status (Ta = 25°C)	Typical value	Maximum value	Unit
EZ mode	The module is in the EZ state and the Wi-Fi indicator fast flashes.	115	125	mA
Idle mode	The module is in the connected state and the Wi-Fi indicator is steady on.	60	209	mA
Working mode	The module is in the connected state and the Wi-Fi indicator is steady on.	118	198	mA
Disconnection mode	The module is in the disconnected state and the Wi-Fi indicator is steady off.	34	192	mA

Note: The peak duration is about 5 µs.

The preceding parameter values vary depending on the firmware functions.

RF features

Basic RF features

Basic RF features:

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

Wi-Fi Output Performance

TX power during constant emission:

Parameter		Minimum value	Typical value	Maximum value	Unit
RF average output power, 802.11b CCK mode	11 Mbit/s	-	17.5	-	dBm
RF average output power, 802.11g OFDM mode	54 Mbit/s	-	14.5	-	dBm
RF average output power, 802.11n OFDM mode	MCS7	-	13.5	-	dBm
Frequency error		–20	-	20	ppm

Wi-Fi RX Sensitivity

RX sensitivity:

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

Antenna interference reduction

​When using an onboard PCB antenna on a Wi-Fi module, make sure that the antenna on the module is at least 15 mm away from other metal parts to ensure optimal wireless performance.

Production

Storage conditions

Storage conditions of a delivered module are as follows:

• The anti-moisture bag must be placed in an environment where the temperature is under 30°C and the relative humidity is under 85%.

• The shelf life of a dry-packaged product is six months from the date when the product is packaged and sealed.

  Note:

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

Recommended oven temperature