Usage: | Telephone, Computer, Server, Mobile phone, Laptop, Electrical Products |
---|---|
Type: | Wireless |
Support Network: | WiFi |
The WR3 is a low-power embedded Wi-Fi module developed by Hangzhou Tuya Information Technology Co., Ltd. The module consists of the highly integrated RTL8710BN chip and an external flash memory. It comes with a built-in Wi-Fi network protocol and a large number of library functions. The WR3 also includes low power ARM CM4F, WLAN MAC, 1T1R WLAN, a maximum frequency of 125MHz, built-in 256K SRAM, 1Mbyte flash, and a wealth of peripheral resources.
The WR3 is an RTOS platform that gathers all Wi-Fi MAC and TCP/IP libraries into one place. It enables users to build on the product and develop embedded Wi-Fi products that suit their individual needs.
The WR3 diagram is shown in Figure 1.1:
A built-in low-power 32-bit CPU that doubles as an application processor
Operating voltage: 3V-3.6V
Peripherals: 7xGPIOs, 2xUARTs, 1xADC
Wi-Fi connectivity
The WR3 has 2 rows of pins (2x8) with a 2mm gap.
WR3 dimensions: 16 mm (W) x 24 mm (L) x 3.3 mm (H); package as shown in Figure 2.1:
Conventional pins are defined as shown in Table 1:
Table 2.1,WR3 pins description
Pin | Symbol | IO Type | Function |
---|---|---|---|
1 | NC | / | Floating not connected, in order to be compatible with other modules |
2 | GPIOA_22 | I/O | GPIOA_22 |
3 | CHIP_EN | I/O | External enable reset pin (active on LOW) |
4 | GPIOA_19 | I/O | GPIOA_19 |
5 | GPIOA_14 | I/O | GPIOA_14, hardware PWM |
6 | GPIOA_15 | I/O | GGPIOAGPIOA_15, hardware PWM |
7 | GPIOA_0 | I/O | GPIOA_0, cannot be HIGH when it is powered on, but can be after powering on |
8 | VD33 | P | Module power supply pin (3.3V) |
9 | GND | P | Ground plane |
10 | ADC | AI | ADC port, maximum input voltage 5V |
11 | GPIOA_29 | I/O | UART_Log_RXD (for printing the internal information of the module) |
12 | GPIOA_30 | I/O | UART_Log_TXD (for printing the internal information of the module) |
13 | GPIOA_5 | I/O | GPIOA_5, hardware PWM |
14 | GPIOA_12 | I/O | GPIOA_12, hardware PWM |
15 | RXD | I/O | UART0_RXD (user serial port) |
16 | TXD | I/O | UART0_TXD (user serial port) |
Description: P indicates the power pin, I/O indicates the input/output pin, and AI indicates the analog input pin
Table 3.1,Absolute Parameters
Parameters | Description | Minimum value | Maximum value | Unit |
---|---|---|---|---|
Ts | Storage temperature | -20 | 105 | ºC |
VDD | Input voltage | -0.3 | 3.6 | V |
Electrostatic discharge voltage (human-body model) | TAMB-25ºC | - | 2 | KV |
Electrostatic discharge voltage (machine model) | TAMB-25ºC | - | 0.5 | KV |
Table 3.2, Normal operating conditions
Parameters | Description | Min | Typ | Max | Unit |
---|---|---|---|---|---|
Ta | Operating temperature | -20 | - | 85 | ºC |
VDD | Operating voltage | 3.0 | - | 3.6 | V |
VIL | IO low input | -0.3 | - | VDD*0.25 | V |
VIH | IO high input | VDD*0.75 | - | 3.6 | V |
VOL | IO low output | - | - | VDD*0.1 | V |
VOH | IO high output | VDD*0.8 | - | VDD | V |
Imax | IO drive current | - | - | 16 | mA |
Cpad | Input pin capacitance | - | 2 | - | pF |
Table 3.3,Power consumption during continuous TX
Symbol | Mode | Power | Typ | Unit |
---|---|---|---|---|
IRF | 11b11Mbps | 17dBm | 287 | mA |
IRF | 11b11Mbps | 18dBm | 295 | mA |
IRF | 11g54Mbps | 15dBm | 255 | mA |
IRF | 11g54Mbps | 17.5dBm | 267 | mA |
IRF | 11n BW20MCS7 | 13dBm | 244 | mA |
IRF | 11n BW20MCS7 | 16.5dBm | 257 | mA |
IRF | 11n BW40MCS7 | 13dBm | 220 | mA |
IRF | 11n BW40MCS7 | 16.5dBm | 230 | mA |
Table 3.4, Power consumption during continuous RX
Symbol | Mode | Typ | Unit |
---|---|---|---|
IRF | CPU sleep | 90 | mA |
IRF | CPU active | 120 | mA |
Table 3.5, Module operating current
Operation Mode | Operating condition, TA=25ºC | Typ | Peak | Unit |
---|---|---|---|---|
Quick configuration | Module in quick net-pairing state, Wi-Fi indicator blinking | 121.8 | 141 | mA |
Network connection idle | Module connected to network, Wi-Fi indicator constantly on | 52 | 125 | mA |
Network connection active | Module connected to network, Wi-Fi indicator constantly on | 180 | 312 | mA |
Disconnected | Module not connected to network, Wi-Fi indicator always off | 46 | 120 | mA |
Notes: The peak period is approx. 5us.
The parameters above may vary according to firmware.
FAQ1.Is it possible order 1pcs? |