WBR3DU-C Module Specification¶
1 Product Description¶
WBR3DU-C is a low power consumption embedded Wi-Fi+Bluetooth module. It consists of a highly integrated wireless RF chip RTL8720CF(W701H-VT2-CG) with built-in Wi-Fi network stack and rich library functions. This product also includes a low-power KM4 MCU, WLAN MAC, 1T1R WLAN, up to 100MHz, 256K SRAM, 2Mbyte flash and rich peripheral resources. device resources. The WBR3DU-C is an RTOS platform with integrated libraries for all Wi-Fi MAC and TCP/IP protocols. Users can develop their own embedded Wi-Fi applications based on these WBR3DU-C is an RTOS platform that integrates all Wi-Fi MAC and TCP/IP protocol libraries. 1.1 Product Features - Built-in low-power KM4 MCU, which can be used as an application processor. - Support 100MHz main frequency - Operating voltage: 3.0V~3.6V - Wi-Fi Bluetooth connectivity - 802.11 b/g/n - Channel 1-14@2.4GHz (CH1-11 for US/CA, CH1-13 for EU/CN) - Supports WEP,WPA/WPA2,WPA2 PSK (AES) security mode - Supports Bluetooth 4.2 Low Energy - Supports SmartConfig and AP (both Android and IOS devices) - External Antenna - Operating temperature: -40°C to 105°C
1.2 Specification¶
| Item | Description |
|---|---|
| Product Name | WBR3DU-C |
| Product Description | Wi-Fi and BT 4.2 Dual Mode Module |
| Product Dimension | L x W: 12±0.3 *15±0.3 mm |
| Interface Type | SMT Type |
| Eco-Friendly | All hardware components are fully compliant with EU RoHS Directive. |
1.3 Absolute electrical parameters¶
| Parameter | Description | Minimum | Maximum | Unit |
|---|---|---|---|---|
| Ts | Storage Temperature | -40 | 125 | °C |
| VBAT | Supply voltage | -0.3 | 3.6 | V |
| Static Discharge Voltage (Human Body Models) | TAMB -25 °C | - | 2 | KV |
| TAMB -25°C | - | 0.5 | KV | Static Discharge Voltage (Machine Model) |
1.4 Normal Operating Conditions¶
| Parameter | Description | Minimum | Standard | Maximum | Unit |
|---|---|---|---|---|---|
| Ta | Operating Temperature | -40 | - | 105 | °C |
| VBAT | Supply Voltage | 3.0 | 3.3 | 3.6 | V |
| VIL | IO low input | - | - | 0.8 | V |
| VIH | IO High Input | 2.0 | - | - | V |
| VOL | IO Low Output | - | - | 0.4 | V |
| VOH | IO High Level Output | 2.4 | - | - | V |
| I IO | Drive Current | - | - | 16 | mA |
2 Pin Description¶
2.1 Pin Definition Diagram & Pin Definition¶
| Serial Number | Pin Definition | IO Type | Function |
|---|---|---|---|
| 1 | GND | P | Power Reference Ground |
| 2 | VCC | P | Module Power Pin (3.3V) |
| 3 | A19 | I/O | GPIOA_19，Hardware PWM，IC Pin40 |
| 4 | A18 | I/O | GPIOA_18，Hardware PWM，IC Pin39 |
| 5 | A17 | I/O | GPIOA_17，Hardware PWM，IC Pin38 |
| 6 | A16 | I/O | GPIOA_16，UART_Log_TXD (for printing internal module information), can be configured as a normal GPIO |
| 7 | A15 | I/O | GPIOA_15，UART_Log_RXD (for printing internal information of the module), can be configured as a normal GPIO |
| 8 | A14/TX | I/O | GPIOA_14，UART0_TXD（user serial port） |
| 9 | A13/RX | I/O | GPIOA_13，UART0_RXD（user serial port） |
| 10 | A12 | I/O | GPIOA_12，Hardware PWM，IC Pin26 |
| 11 | A11 | I/O | GPIOA_11，Hardware PWM，IC Pin25 |
| 12 | A7 | I/O | GPIOA_7，Hardware PWM，IC Pin21 |
| 13 | A4 | I/O | GPIOA_4，Hardware PWM，IC Pin20 |
| 14 | A3 | I/O | GPIOA_3，Hardware PWM，IC Pin19 |
| 15 | A2 | I/O | GPIOA_2，Hardware PWM，IC Pin18 |
| 16 | A0 | I/O | GPIOA_0 |
| 17 | EN | Module enable pin, active high, module has been pulled up high, the user can externally control this pin |
3 Package Information and Production Guidelines¶
3.1 Mechanical Dimensions¶
PCB size: 12±0.3mm (L) × 15±0.3mm (W) × 0.8±0.1mm (H). The following diagram shows the WBR3DU-C package counterpart.
